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Journal articles on the topic 'Role sequence'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Alhazmi, Muflih, Rexma Sherine Venchislas, Gerly Thaniel Gnanamuthu, et al. "H-Nacci Sequence and Its Role in Virus Mutation." Mathematics 12, no. 17 (2024): 2695. http://dx.doi.org/10.3390/math12172695.

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In this research, we proposed a new concept called as the H-Nacci sequence. The H-Nacci sequence (Fibonacci sequences of length h) is a collection of numbers developed from the coefficients of the generalized m-th Fibonacci equation. After that, we determined the golden ratio for each type of H-Nacci sequence, which also coincided with an existing Fibonacci sequence. As each Fibonacci sequence has a unique advantage, first of all, we have applied the H-Nacci sequence to the virus mutation process to show the key benefits of the H-Nacci sequence, and then we found the Fibonacci risk model to an

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Kennerley, Steve W., K. Sakai, and M. F. S. Rushworth. "Organization of Action Sequences and the Role of the Pre-SMA." Journal of Neurophysiology 91, no. 2 (2004): 978–93. http://dx.doi.org/10.1152/jn.00651.2003.

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To understand the contribution of the human presupplementary motor area (pre-SMA) in sequential motor behavior, we performed a series of finger key-press experiments. Experiment 1 revealed that each subject had a spontaneous tendency to organize or “chunk” a long sequence into shorter components. We hypothesized that the pre-SMA might have a special role in initiating each chunk but not at other points during the sequence. Experiment 2 therefore examined the effect of 0.5-s, 10-Hz repetitive transcranial magnetic stimulation (rTMS) directed over the pre-SMA. As hypothesized, performance was di

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3

Shin, Jacqueline C., and Richard B. Ivry. "Spatial and Temporal Sequence Learning in Patients with Parkinson's Disease or Cerebellar Lesions." Journal of Cognitive Neuroscience 15, no. 8 (2003): 1232–43. http://dx.doi.org/10.1162/089892903322598175.

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The functional role of different subcortical areas in sequence learning is not clear. In the current study, Parkinson's patients, patients with cerebellar damage, and age-matched control participants performed a serial reaction time task in which a spatial sequence and a temporal sequence were presented simultaneously. The responses were based on the spatial sequence, and the temporal sequence was incidental to the task. The two sequences were of the same length, and the phase relationship between them was held constant throughout training. Sequence learning was assessed comparing performance

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Christie-Blick, Nicholas, Stephen F. Pekar, and Andrew S. Madof. "Is there a role for sequence stratigraphy in chronostratigraphy?" Stratigraphy 4, no. 2-3 (2007): 217–29. http://dx.doi.org/10.29041/strat.04.2.15.

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Sequence stratigraphy revolutionized the field of stratigraphy in the late 1970s and 1980s by providing an interpretive depositional framework for integrating diverse stratigraphic data at the scale of sedimentary basins. However, a lack of consensus on criteria for recognizing, mapping and hence dating sequence boundaries, interpretations of uneven quality, and doubts about the universal eustatic origin and global synchrony of unconformity-related sequences limit the usefulness of sequence stratigraphy in chronostratigraphy.

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І.О., Талаш. "ТЕОРЕТИЧНІ ЗАСАДИ ПОБУДОВИ РОЛЕГРАМИ". Вісник Харківського національного педагогічного університету імені Г.С. Сковороди "Психологія", № 52 (18 січня 2016): 361–68. https://doi.org/10.5281/zenodo.44903.

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 The theoretical basis for the formation of the personality’s role and status sets is analyzed, as well as the conditions affecting the development of the personality’s role repertoire, an attempt is made to provide a role-based structure.

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6

Kampfer, Peter, and Stefanie P. Glaeser. "Prokaryotic taxonomy in the sequencing era and the role of MLSA in classification." Microbiology Australia 32, no. 2 (2011): 66. http://dx.doi.org/10.1071/ma11066.

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The initial step in prokaryote species and genera descriptions is now largely based on the 16S rRNA gene sequencing approach followed often by a very restricted additional phenotypic characterisation of the representatives of the potential novel taxa. Despite the advantages of the sequence-based approaches, there appears to be a tendency to classify new species on the basis of comparative sequence analyses of 16S rRNA gene sequences and other gene sequence data (multilocus sequence analyses, MLSA), contrary to the indications of other data. However, the biological meaning behind these sequence

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Vaschetto, Luis M., and Natalia Ortiz. "The Role of Sequence Duplication in Transcriptional Regulation and Genome Evolution." Current Genomics 20, no. 6 (2019): 405–8. http://dx.doi.org/10.2174/1389202920666190320140721.

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Sequence duplication is nowadays recognized as an important mechanism that underlies the evolution of eukaryote genomes, being indeed one of the most powerful strategies for the generation of adaptive diversity by modulating transcriptional activity. The evolutionary novelties simultaneously associated with sequence duplication and differential gene expression can be collectively referred to as duplication-mediated transcriptional regulation. In the last years, evidence has emerged supporting the idea that sequence duplication and functionalization represent important evolutionary strategies a

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8

Cooper, Paul, Beatrice Mueck, Shida Yousefi, Suzanne Potter, and Gabor Jarai. "cDNA-RDA of genes expressed in fetal and adult lungs identifies factors important in development and function." American Journal of Physiology-Lung Cellular and Molecular Physiology 278, no. 2 (2000): L284—L293. http://dx.doi.org/10.1152/ajplung.2000.278.2.l284.

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The identification of genetic factors important in lung development and function will help in understanding the underlying molecular mechanisms of respiratory disease. Representational difference analysis of cDNA (cDNA-RDA) is a PCR-based subtractive enrichment procedure for the isolation of differentially expressed genes. We performed cDNA-RDA and isolated genes expressed more abundantly in fetal and adult lungs. Fifty-four clones potentially representing genes with higher transcript levels in the fetal lung were sequenced. Sequence similarity searches indicated that these clones included 12

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9

Widom, J. "Role of DNA sequence in nucleosome stability and dynamics." Quarterly Reviews of Biophysics 34, no. 3 (2001): 269–324. http://dx.doi.org/10.1017/s0033583501003699.

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1. Introduction 2701.1 Overview of nucleosome structure 2712. Relative equilibrium stability (affinity) of histone–DNA interactions in nucleosomes 2722.1 Relative affinity equals relative equilibrium stability 2722.2 Competition assays for relative free-energy measurements 2732.3 Technical issues in relative free-energy measurements 2752.4 Range of affinities 2783. Relation of nucleosome stability to nucleosome positioning 2793.1 Translational nucleosome positioning 2793.2 Rotational positioning 2803.3 Unfavorable positioning 2813.4 Experiments 2814. Physical basis of DNA sequence preferences

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Siu, G., E. A. Springer, H. V. Huang, L. E. Hood, and S. T. Crews. "Structure of the T15 VH gene subfamily: identification of immunoglobulin gene promotor homologies." Journal of Immunology 138, no. 12 (1987): 4466–71. http://dx.doi.org/10.4049/jimmunol.138.12.4466.

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Abstract We have sequenced and analyzed the flanking and coding regions of four closely related mouse VH gene segments referred to as the T15 gene subfamily. We have found that although the sequence homologies between the four members of this family are greatest in the coding region, significant homologies extend into the leader sequences and the flanking regions as well. Sequence comparisons of the promoter regions of other VH gene segments indicate that the octamer promoter sequence is part of a larger conserved sequence that may play an important role in immunoglobulin gene transcription. A

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Song, Bosheng, Zimeng Li, Xuan Lin, Jianmin Wang, Tian Wang, and Xiangzheng Fu. "Pretraining model for biological sequence data." Briefings in Functional Genomics 20, no. 3 (2021): 181–95. http://dx.doi.org/10.1093/bfgp/elab025.

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Abstract With the development of high-throughput sequencing technology, biological sequence data reflecting life information becomes increasingly accessible. Particularly on the background of the COVID-19 pandemic, biological sequence data play an important role in detecting diseases, analyzing the mechanism and discovering specific drugs. In recent years, pretraining models that have emerged in natural language processing have attracted widespread attention in many research fields not only to decrease training cost but also to improve performance on downstream tasks. Pretraining models are us

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Praszkier, J., and A. J. Pittard. "Role of CIS in Replication of an IncB Plasmid." Journal of Bacteriology 181, no. 9 (1999): 2765–72. http://dx.doi.org/10.1128/jb.181.9.2765-2772.1999.

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ABSTRACT Replication of the IncB plasmid pMU720 requires the synthesis of the cis-acting RepA protein and the presence of two DNA elements, ori and CIS. CIS is the 166-bp sequence separating the RepA coding sequence from ori. To investigate how this organization of the pMU720 replicon contributes to the mechanism of initiation of replication, mutations in the sequence and/or the length of CIS were introduced into theCIS region and their effects on the efficiency of replication of the pMU720 replicon in vivo was determined. TheCIS region was found to be composed of two domains. TherepA-proximal

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Stavnezer, E., D. Brodeur, and L. A. Brennan. "The v-ski oncogene encodes a truncated set of c-ski coding exons with limited sequence and structural relatedness to v-myc." Molecular and Cellular Biology 9, no. 9 (1989): 4038–45. http://dx.doi.org/10.1128/mcb.9.9.4038-4045.1989.

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The nucleotide sequence of a biologically active v-ski gene from a cloned proviral segment shows that ski is a 1,312-base sequence embedded in the p19 region of the avian leukosis virus gag gene. The v-ski sequence contains a single open translational reading frame that encodes a polypeptide with a molecular mass of 49,000 daltons. The predicted amino acid sequence includes nuclear localization motifs that have been identified in other nuclear oncoproteins. It also contains a proline-rich region and a set of cysteine and histidine residues that could constitute a metal-binding domain. Two regi

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Stavnezer, E., D. Brodeur, and L. A. Brennan. "The v-ski oncogene encodes a truncated set of c-ski coding exons with limited sequence and structural relatedness to v-myc." Molecular and Cellular Biology 9, no. 9 (1989): 4038–45. http://dx.doi.org/10.1128/mcb.9.9.4038.

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The nucleotide sequence of a biologically active v-ski gene from a cloned proviral segment shows that ski is a 1,312-base sequence embedded in the p19 region of the avian leukosis virus gag gene. The v-ski sequence contains a single open translational reading frame that encodes a polypeptide with a molecular mass of 49,000 daltons. The predicted amino acid sequence includes nuclear localization motifs that have been identified in other nuclear oncoproteins. It also contains a proline-rich region and a set of cysteine and histidine residues that could constitute a metal-binding domain. Two regi

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Han, Shui’Er, David Alais, and Randolph Blake. "Battle of the Mondrians: Investigating the Role of Unpredictability in Continuous Flash Suppression." i-Perception 9, no. 4 (2018): 204166951879293. http://dx.doi.org/10.1177/2041669518792930.

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In continuous flash suppression (CFS), a dynamic sequence of Mondrian patterns presented to one eye suppresses a static target in the other eye for several seconds at a time. Its effectiveness has been linked to low-level properties such as spatial frequency and orientation, but the role of higher order influences remains unstudied. Here, using a tracking paradigm, we asked if the spatial and temporal predictability of the Mondrian sequence affects CFS dynamics. Predictable temporal sequences were regularly updated every 100 ms or modulated sinusoidally in pixel luminance at 2 Hz. Unpredictabl

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Bellmund, Jacob L. S., Ignacio Polti, and Christian F. Doeller. "Sequence Memory in the Hippocampal–Entorhinal Region." Journal of Cognitive Neuroscience 32, no. 11 (2020): 2056–70. http://dx.doi.org/10.1162/jocn_a_01592.

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Episodic memories are constructed from sequences of events. When recalling such a memory, we not only recall individual events, but we also retrieve information about how the sequence of events unfolded. Here, we focus on the role of the hippocampal–entorhinal region in processing and remembering sequences of events, which are thought to be stored in relational networks. We summarize evidence that temporal relations are a central organizational principle for memories in the hippocampus. Importantly, we incorporate novel insights from recent studies about the role of the adjacent entorhinal cor

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17

Demongeot, Jacques, and Vic Norris. "Emergence of a “Cyclosome” in a Primitive Network Capable of Building “Infinite” Proteins." Life 9, no. 2 (2019): 51. http://dx.doi.org/10.3390/life9020051.

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We argue for the existence of an RNA sequence, called the AL (for ALpha) sequence, which may have played a role at the origin of life; this role entailed the AL sequence helping generate the first peptide assemblies via a primitive network. These peptide assemblies included “infinite” proteins. The AL sequence was constructed on an economy principle as the smallest RNA ring having one representative of each codon’s synonymy class and capable of adopting a non-functional but nevertheless evolutionarily stable hairpin form that resisted denaturation due to environmental changes in pH, hydration,

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Rojas, Ana Maria, Gloria Fuentes, Antonio Rausell, and Alfonso Valencia. "The Ras protein superfamily: Evolutionary tree and role of conserved amino acids." Journal of Cell Biology 196, no. 2 (2012): 189–201. http://dx.doi.org/10.1083/jcb.201103008.

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The Ras superfamily is a fascinating example of functional diversification in the context of a preserved structural framework and a prototypic GTP binding site. Thanks to the availability of complete genome sequences of species representing important evolutionary branch points, we have analyzed the composition and organization of this superfamily at a greater level than was previously possible. Phylogenetic analysis of gene families at the organism and sequence level revealed complex relationships between the evolution of this protein superfamily sequence and the acquisition of distinct cellul

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Li, Zhuo, Jie Xu, Zhenhai Chen, et al. "The L Gene of J Paramyxovirus Plays a Critical Role in Viral Pathogenesis." Journal of Virology 87, no. 23 (2013): 12990–98. http://dx.doi.org/10.1128/jvi.02039-13.

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J paramyxovirus (JPV) was first isolated from moribund mice with hemorrhagic lung lesions in Australia in the 1970s. Recent sequencing of JPV (JPV-LW) confirms that JPV is a paramyxovirus with several unique features. However, neither JPV-LW nor a recombinant JPV based on its sequence (rJPV-LW) caused obvious illness in mice. In this work, we analyzed a different JPV isolate (JPV-BH), which behaved differently from JPV-LW; JPV-BH grew more slowly in Vero cells and had less of a cytopathic effect on tissue culture cells but caused severe disease in mice. We have determined the whole genome sequ

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Cooper, Paul, Suzanne Potter, Beatrice Mueck, Shida Yousefi, and Gabor Jarai. "Identification of genes induced by inflammatory cytokines in airway epithelium." American Journal of Physiology-Lung Cellular and Molecular Physiology 280, no. 5 (2001): L841—L852. http://dx.doi.org/10.1152/ajplung.2001.280.5.l841.

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Epithelial cells lining the airways are thought to play a prominent role in respiratory diseases. We utilized cDNA representational difference analysis to identify the genes in which expression is induced by the proinflammatory cytokines tumor necrosis factor-α and interleukin-1β in primary human bronchial epithelial cells and hence are relevant to airway inflammation. Hybridization of the subtraction product to arrayed cDNAs indicated that known tumor necrosis factor-α- and interleukin-1β-inducible genes such as B94, Zfp36, and regulated on activation normal T cell expressed and secreted were

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Shil, Pratip, Niraj Dudani, and Pandit B. Vidyasagar. "ISHAN: Sequence Homology Analysis Package." In Silico Biology: Journal of Biological Systems Modeling and Multi-Scale Simulation 6, no. 5 (2006): 373–77. https://doi.org/10.3233/isb-00250.

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Sequence based homology studies play an important role in evolutionary tracing and classification of proteins. Various methods are available to analyze biological sequence information. However, with the advent of proteomics era, there is a growing demand for analysis of huge amount of biological sequence information, and it has become necessary to have programs that would provide speedy analysis. ISHAN has been developed as a homology analysis package, built on various sequence analysis tools viz FASTA, ALIGN, CLUSTALW, PHYLIP and CODONW (for DNA sequences). This JAVA application offers the us

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Simmons, M. D., and C. L. Williams. "Sequence stratigraphy and eustatic sea-level change: the role of micropalaeontology." Journal of Micropalaeontology 11, no. 2 (1992): 112. http://dx.doi.org/10.1144/jm.11.2.112.

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Abstract. Following the May 1992 meeting in Dijon, which initiated an international project on the “Sequence Stratigraphy of European Basins”, it seems an appropriate time to consider the contribution micropalaeontology can make to the science of sequence stratigraphy. In this short note, we assume that readers are familiar with sequence stratigraphic terminology; if not, see Van Wagoner et al. (1988).WHAT ARE THE CHALLENGES FACING SEQUENCE STRATIGRAPHY?Demonstrating global eustatic sea-level change. We accept that the basic sequence stratigraphy model put forward by Peter Vail and his colleag

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Kühnel, Anja, Robert Gaschler, Peter A. Frensch, Asher Cohen, and Dorit Wenke. "Lack of Automatic Vocal Response Learning While Reading Aloud." Experimental Psychology 66, no. 4 (2019): 266–80. http://dx.doi.org/10.1027/1618-3169/a000451.

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Abstract. Research on implicit sequence learning with the Serial Reaction Task (SRT) has demonstrated that people automatically acquire knowledge about fixed repeating sequences of responses and can transfer response sequence knowledge to novel stimuli. Such demonstrations are, however, mostly limited to setups with visual stimuli and manual responses. Here we systematically follow up on scarce attempts to demonstrate implicit sequence learning in word reading. While the literature on implicit sequence learning can be taken to suggest that sequence knowledge is acquired and affecting performan

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Nadel, B., and A. J. Feeney. "Nucleotide deletion and P addition in V(D)J recombination: a determinant role of the coding-end sequence." Molecular and Cellular Biology 17, no. 7 (1997): 3768–78. http://dx.doi.org/10.1128/mcb.17.7.3768.

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During V(D)J recombination, the coding ends to be joined are extensively modified. Those modifications, termed coding-end processing, consist of removal and addition of various numbers of nucleotides. We previously showed in vivo that coding-end processing is specific for each coding end, suggesting that specific motifs in a coding-end sequence influence nucleotide deletion and P-region formation. In this study, we created a panel of recombination substrates containing actual immunoglobulin and T-cell receptor coding-end sequences and dissected the role of each motif by comparing its processin

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Gary, Todd P., Nancy E. Colowick, and Gisela Mosig. "A Species Barrier Between Bacteriophages T2 and T4: Exclusion, Join-Copy and Join-Cut-Copy Recombination and Mutagenesis in the dCTPase Genes." Genetics 148, no. 4 (1998): 1461–73. http://dx.doi.org/10.1093/genetics/148.4.1461.

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Abstract Bacteriophage T2 alleles are excluded in crosses between T2 and T4 because of genetic isolation between these two virus species. The severity of exclusion varies in different genes, with gene 56, encoding an essential dCT(D)Pase/dUT(D)Pase of these phages, being most strongly affected. To investigate reasons for such strong exclusion, we have (1) sequenced the T2 gene 56 and an adjacent region, (2) compared the sequence with the corresponding T4 DNA, (3) constructed chimeric phages in which T2 and T4 sequences of this region are recombined, and (4) tested complementation, recombinatio

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Tabandeh, Sara, Cristina Elisabeth Lemus та Lorraine Leon. "Deciphering the Role of π-Interactions in Polyelectrolyte Complexes Using Rationally Designed Peptides". Polymers 13, № 13 (2021): 2074. http://dx.doi.org/10.3390/polym13132074.

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Electrostatic interactions, and specifically π-interactions play a significant role in the liquid-liquid phase separation of proteins and formation of membraneless organelles/or biological condensates. Sequence patterning of peptides allows creating protein-like structures and controlling the chemistry and interactions of the mimetic molecules. A library of oppositely charged polypeptides was designed and synthesized to investigate the role of π-interactions on phase separation and secondary structures of polyelectrolyte complexes. Phenylalanine was chosen as the π-containing residue and was u

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Desmarais, Joëlle A., Mingju Cao, Andrew Bateman, and Bruce D. Murphy. "Spatiotemporal expression pattern of progranulin in embryo implantation and placenta formation suggests a role in cell proliferation, remodeling, and angiogenesis." REPRODUCTION 136, no. 2 (2008): 247–57. http://dx.doi.org/10.1530/rep-08-0044.

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Embryo implantation in the mink is preceded by a variable but obligate period of delay in development. Under the influence of progesterone and unknown luteal factors, the mink embryo implants 11–13 days following its exit from diapause. Recent work suggests that progranulin, a growth factor and secreted glycoprotein, is involved in trophoblast proliferation, placental development and endometrial differentiation in the mouse. Using the mink model of delayed implantation and endotheliochorial placentation, we examined the spatiotemporal distribution of progranulin in trophoblast and endometrium

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Sola, Isabel, José L. Moreno, Sonia Zúñiga, Sara Alonso, and Luis Enjuanes. "Role of Nucleotides Immediately Flanking the Transcription-Regulating Sequence Core in Coronavirus Subgenomic mRNA Synthesis." Journal of Virology 79, no. 4 (2005): 2506–16. http://dx.doi.org/10.1128/jvi.79.4.2506-2516.2005.

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ABSTRACT The generation of subgenomic mRNAs in coronavirus involves a discontinuous mechanism of transcription by which the common leader sequence, derived from the genome 5′ terminus, is fused to the 5′ end of the mRNA coding sequence (body). Transcription-regulating sequences (TRSs) precede each gene and include a conserved core sequence (CS) surrounded by relatively variable sequences (5′ TRS and 3′ TRS). Regulation of transcription in coronaviruses has been studied by reverse-genetics analysis of the sequences immediately flanking a unique CS in the Transmissible gastroenteritis virus geno

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Sweeney, R., L. Chen, and M. C. Yao. "An rRNA variable region has an evolutionarily conserved essential role despite sequence divergence." Molecular and Cellular Biology 14, no. 6 (1994): 4203–15. http://dx.doi.org/10.1128/mcb.14.6.4203-4215.1994.

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Regions extremely variable in size and sequence occur at conserved locations in eukaryotic rRNAs. The functional importance of one such region was determined by gene reconstruction and replacement in Tetrahymena thermophila. Deletion of the D8 region of the large-subunit rRNA inactivates T. thermophila rRNA genes (rDNA): transformants containing only this type of rDNA are unable to grow. Replacement with an unrelated sequence of similar size or a variable region from a different position in the rRNA also inactivated the rDNA. Mutant rRNAs resulting from such constructs were present only in pre

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Sweeney, R., L. Chen, and M. C. Yao. "An rRNA variable region has an evolutionarily conserved essential role despite sequence divergence." Molecular and Cellular Biology 14, no. 6 (1994): 4203–15. http://dx.doi.org/10.1128/mcb.14.6.4203.

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Regions extremely variable in size and sequence occur at conserved locations in eukaryotic rRNAs. The functional importance of one such region was determined by gene reconstruction and replacement in Tetrahymena thermophila. Deletion of the D8 region of the large-subunit rRNA inactivates T. thermophila rRNA genes (rDNA): transformants containing only this type of rDNA are unable to grow. Replacement with an unrelated sequence of similar size or a variable region from a different position in the rRNA also inactivated the rDNA. Mutant rRNAs resulting from such constructs were present only in pre

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Castagnone-Sereno, Philippe, Frédéric Leroy, and Pierre Abad. "Cloning and characterization of an extremely conserved satellite DNA family from the root-knot nematode Meloidogyne arenaria." Genome 43, no. 2 (2000): 346–53. http://dx.doi.org/10.1139/g00-007.

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A new satellite DNA family, named pMaE, has been cloned from the genome of the phytoparasitic nematode, Meloidogyne arenaria (Nematoda: Tylenchida). It is represented as tandemly repeated sequences with a monomeric unit of 172 bp. The monomers are present at approximately 15 700 copies per haploid genome, and represent about 5.3% of the total genomic DNA. Twenty-seven independent monomers have been cloned and sequenced. The deduced consensus sequence is 70.9% A + T rich, with frequent stretches of A and (or) T. Several direct or inverted sub-repeats are present in the sequence, which may allow

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Xavier, Rosely, and Andressa Regiane Gesser. "The role of a consciousness-raising task in a focused-task sequence." Revista da Anpoll 53, no. 1 (2022): 78–98. http://dx.doi.org/10.18309/ranpoll.v53i1.1610.

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This paper analyzes the role of explicit information on the learning of subject and object wh-questions in a sequence of tasks. Two sequences of focused tasks (ELLIS, 2003) were designed to incorporate flooded and enhanced subject and object wh-questions in the input. The activities were the same, except for a consciousness-raising task (C-RT) in one of the sequences, which was devised to promote learners’ explicit knowledge of the target structures. Two groups of EFL high school students participated in the study. The data were collected through a pre- and a post-test that required the produc

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Wang, Changyuan, Yi Zhang, Wanan Yang, and Chunhua Ren. "Optimal Constructions of Low-Hit Zone Frequency-Hopping Sequence Set Based on m-Sequence." Mathematics 13, no. 14 (2025): 2228. https://doi.org/10.3390/math13142228.

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Quasi-Synchronous Frequency hopping (FH) Multiple Access (QS-FHMA) systems feature high communication efficiency, strong flexibility, and low operational costs, and they have been widely used in various FH communication scenarios such as satellite communication, military communication, and radio measurement. The low-hit zone (LHZ) FH sequences set (LHZ FHS set) plays a critical role in QS-FHMA systems, enabling user access with permissible time-delay offsets while maintaining superior performance. In this paper, three new methods to construct LHZ FHS sets based on m-sequences are proposed. The

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Rajman, Luis A., and Susan T. Lovett. "A Thermostable Single-Strand DNase fromMethanococcus jannaschii Related to the RecJ Recombination and Repair Exonuclease from Escherichia coli." Journal of Bacteriology 182, no. 3 (2000): 607–12. http://dx.doi.org/10.1128/jb.182.3.607-612.2000.

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ABSTRACT The RecJ protein of Escherichia coli plays an important role in a number of DNA repair and recombination pathways. RecJ catalyzes processive degradation of single-stranded DNA in a 5′-to-3′ direction. Sequences highly related to those encoding RecJ can be found in most of the eubacterial genomes sequenced to date. From alignment of these sequences, seven conserved motifs are apparent. At least five of these motifs are shared among a large family of proteins in eubacteria, eukaryotes, and archaea, including the PPX1 polyphosphatase of yeast and Drosophila Prune. Archaeal genomes are pa

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Waukau, Jill, and Steven Forst. "Identification of a Conserved N-Terminal Sequence Involved in Transmembrane Signal Transduction in EnvZ." Journal of Bacteriology 181, no. 17 (1999): 5534–38. http://dx.doi.org/10.1128/jb.181.17.5534-5538.1999.

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ABSTRACT To determine whether N-terminal sequences are involved in the transmembrane signaling mechanism of EnvZ, the nucleotide sequences ofenvZ genes from several enteric bacteria were determined. Comparative analysis revealed that the amino acid sequence between Pro41 and Glu53 was highly conserved. To further analyze the role of the conserved sequence, envZ of Escherichia coli was subjected to random PCR mutagenesis and mutant alleles that produced a high-osmolarity phenotype, in which ompFwas repressed, were isolated. The mutations identified clustered within, as well as adjacent to, the

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Clerget, Emeline, William Poncin, Luciano Fadiga, and Etienne Olivier. "Role of Broca's Area in Implicit Motor Skill Learning: Evidence from Continuous Theta-burst Magnetic Stimulation." Journal of Cognitive Neuroscience 24, no. 1 (2012): 80–92. http://dx.doi.org/10.1162/jocn_a_00108.

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Complex actions can be regarded as a concatenation of simple motor acts, arranged according to specific rules. Because the caudal part of the Broca's region (left Brodmann's area 44, BA 44) is involved in processing hierarchically organized behaviors, we aimed to test the hypothesis that this area may also play a role in learning structured motor sequences. To address this issue, we investigated the inhibitory effects of a continuous theta-burst TMS (cTBS) applied over left BA 44 in healthy subjects, just before they performed a serial RT task (SRTT). SRTT has been widely used to study motor s

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Tomków, Jacek, Dariusz Fydrych, and Grzegorz Rogalski. "Role of Bead Sequence in Underwater Welding." Materials 12, no. 20 (2019): 3372. http://dx.doi.org/10.3390/ma12203372.

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This paper presents examinations of the role of the bead sequence in underwater welding. Two specimens of wet welded layers made by covered electrodes with the use of normalized S355G10+N steel were welded by a reasonable bead sequence. For each specimen, metallographic macro- and micro-scopic tests were done. Then, Vickers HV10 hardness measurements were conducted for each pad weld in the welded layer. The results show that welding in the water environment carries many problems in the stability of the welding arc, which influences the properties of the welds. The effects of refining and tempe

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Konestabo, Ove R., K. E. Aasmundtveit, E. J. Samuelsen, E. Bakken, and P. H. J. Carlsen. "Role of sidechain sequence in stereoregular polyalkylterthiophene." Synthetic Metals 84, no. 1-3 (1997): 589–90. http://dx.doi.org/10.1016/s0379-6779(97)80870-3.

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Creutzfeldt, W. "The Achlorhydria-Carcinoid Sequence: Role of Gastrin." Digestion 39, no. 2 (1988): 61–79. http://dx.doi.org/10.1159/000199609.

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M., Abareethan. "ISOLATION AND GENOMIC ANALYSIS OF PROBIOTIC ISOLATE AND ROLE OF AMYLASE ENZYME ACTIVITY IN FISH GROWTH." International Journal of Zoology and Applied Biosciences 1, no. 5 (2016): 221–25. https://doi.org/10.5281/zenodo.1310647.

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Probiotics are beneficial microbial population, which enhance the growth and immunity of fish under stressful environmental conditions by modulating the gut colonization of the probiotic bacterial strains. The present investigation was designed to isolate fish gut bacterial samples. Isolated strains were screened and four strains were assessed with probiotic activity towards the growth of fish in the particular habitat. The experiments were conducted by admixing the strain with water and fortified with the commercial feed for the growth of Labeo rohita. The result clearly revealed that only tw

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Stankov, Srdjan. "Development and role of comparative sequence analysis in medical virology." Medical review 59, no. 3-4 (2006): 138–42. http://dx.doi.org/10.2298/mpns0604138s.

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Introduction. Development of the polymerase chain reaction and deoxyribonucleic acid sequencing techniques has enabled precise identification, classification and taxonomy of viruses. Comparative sequence analysis. Comparative sequence analysis methods can be used in medical virology for many practical purposes. They may be classified into three broad categories: I - reconstruction of genealogical relationships between individual viral isolates for detection and monitoring of sources, reservoirs and modes of viral transmission; II - virus genotyping, that is determination of relationships betwe

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Kang, Ah Rang, Min Jee Kim, Jeong Sun Park, et al. "Comparative Analysis of Two Pear Pests, Cacopsylla jukyungi and Cacopsylla burckhardti (Hemiptera: Psyllidae), Based on Complete Mitochondrial Genomes and Comparison to Confamilial Species." Agronomy 12, no. 9 (2022): 2037. http://dx.doi.org/10.3390/agronomy12092037.

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Mitochondrial genome sequences have been used in diverse fields of biology. In this study, we sequenced the complete mitochondrial genomes (mitogenome) of two pear pests: Cacopsylla jukyungi, the most damaging insect pest to commercial pears in South Korea, and Cacopsylla burckhardti (Hemiptera: Psyllidae). The two mitogenomes were compared to confamilial species to accumulate genetic information and understand evolutionary characteristics of the family Psyllidae. The 15,438 bp-and 14,799 bp-long complete mitogenomes of C. jukyungi and C. burckhardti, respectively, had many features typical of

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Karwowska, U., and Z. Szweykowska-Kulińska. "New intron-containing human tRNA(Leu) genes." Acta Biochimica Polonica 44, no. 4 (1997): 791–94. http://dx.doi.org/10.18388/abp.1997_4383.

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Three new human nuclear tRNA(Leu) genes have been isolated and sequenced using the PCR technique. Two of them represent genes containing a CAA anticodon and both contain introns of 22 nucleotides in length but differing in sequence. Intron-containing prolongated anticodon stems can be folded into a secondary structure similar to that of yeast pre-tRNA(Leu). The evolutionary conserved secondary structure suggests the same role of intron sequences in the human and yeast pre-tRNA(Leu) maturation pathway.

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Ogawa, Atsuko, Takashi Hashida-Okado, Masahiro Endo, et al. "Role of ABC Transporters in Aureobasidin A Resistance." Antimicrobial Agents and Chemotherapy 42, no. 4 (1998): 755–61. http://dx.doi.org/10.1128/aac.42.4.755.

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ABSTRACT Aureobasidin A (AbA) has strong antifungal effects arising from an unusual mechanism. We show that AbA interacts with ATP-binding cassette (ABC) transporters in yeast and mammalian cells. We isolated a gene ofSaccharomyces cerevisiae that conferred resistance to AbA when the gene was present in multiple copies. The gene was identical toYOR1/YRS1, which confers resistance to oligomycin, reveromycin, and organic anions, none of which have structures similar to that of AbA. We also isolated an aur3 Rrecessive mutant of S. cerevisiae with increased resistance to AbA. Northern hybridizatio

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van der Ende, A., C. T. P. Hopman, and J. Dankert. "Deletion of porA by Recombination between Clusters of Repetitive Extragenic Palindromic Sequences in Neisseria meningitidis." Infection and Immunity 67, no. 6 (1999): 2928–34. http://dx.doi.org/10.1128/iai.67.6.2928-2934.1999.

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ABSTRACT PorA is an important component in a vaccine against infection withNeisseria meningitidis. However, porA-negative meningococci were isolated from patients, thereby potentially limiting the role of PorA-mediated immunity. To analyze the mechanism by which the porA deletion occurred, the regions upstream and downstream of porA from three meningococcal strains (H44/76, H355, and 860183) were sequenced. The porAupstream region in strain 860183 contains a cluster of 22 repetitive palindromic RS3 core sequences (ATTCCC-N8-GGGAAT) and 10 RS3 core sequences (ATTCCC) in direct orientation. The

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Popp, Nicola J., Carlos R. Hernandez-Castillo, Paul L. Gribble, and Jörn Diedrichsen. "The role of feedback in the production of skilled finger sequences." Journal of Neurophysiology 127, no. 4 (2022): 829–39. http://dx.doi.org/10.1152/jn.00319.2021.

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Sensory feedback is important during the execution of a movement. However, little is known about how sensory feedback is used during the production of movement sequences. Here, we show two distinct feedback processes in the execution of fast finger movement sequences. By transiently delaying or advancing the feedback of a single press within a sequence, we observed a directionally specific effect on the perturbed press and a directionally non-specific effect on the subsequent presses.

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Baig, Tayyba T., Jean-Marc Lanchy, and J. Stephen Lodmell. "Randomization and In Vivo Selection Reveal a GGRG Motif Essential for Packaging Human Immunodeficiency Virus Type 2 RNA." Journal of Virology 83, no. 2 (2008): 802–10. http://dx.doi.org/10.1128/jvi.01521-08.

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ABSTRACT The packaging signal (ψ) of human immunodeficiency virus type 2 (HIV-2) is present in the 5′ noncoding region of RNA and contains a 10-nucleotide palindrome (pal; 5′-392-GGAGUGCUCC) located upstream of the dimerization signal stem-loop 1 (SL1). pal has been shown to be functionally important in vitro and in vivo. We previously showed that the 3′ side of pal (GCUCC-3′) is involved in base-pairing interactions with a sequence downstream of SL1 to make an extended SL1, which is important for replication in vivo and the regulation of dimerization in vitro. However, the role of the 5′ side

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Litviņenko, Anna, and Artūrs Āboltiņš. "Computationally Efficient Chaotic Spreading Sequence Selection for Asynchronous DS-CDMA." Electrical, Control and Communication Engineering 13, no. 1 (2017): 75–80. http://dx.doi.org/10.1515/ecce-2017-0011.

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Abstract The choice of the spreading sequence for asynchronous direct-sequence code-division multiple-access (DS-CDMA) systems plays a crucial role for the mitigation of multiple-access interference. Considering the rich dynamics of chaotic sequences, their use for spreading allows overcoming the limitations of the classical spreading sequences. However, to ensure low cross-correlation between the sequences, careful selection must be performed. This paper presents a novel exhaustive search algorithm, which allows finding sets of chaotic spreading sequences of required length with a particularl

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Murray, Lynne, and Colwyn Trevarthen. "The infant's role in mother–infant communications." Journal of Child Language 13, no. 1 (1986): 15–29. http://dx.doi.org/10.1017/s0305000900000271.

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ABSTRACTMothers talked to their infants via a video system designed so that each partner saw a full-face, life-size image of the other on a screen before them, perfect eye-to-eye contact being possible. They were presented either with live, real-time video sequences of their infants, where communication was therefore potentially mutually responsive, or else with the same sequence replayed some minutes later. The mother's babytalk differed consistently between live and replay sequences. Since the infants' acts were identical in form in the two conditions, the only difference being the infant's

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Kişi, Ömer, Mehmet Gürdal, and Ekrem Savaş. "On ideal convergence of rough triple sequence." e-Journal of Analysis and Applied Mathematics 2022, no. 1 (2022): 33–44. http://dx.doi.org/10.2478/ejaam-2022-0004.

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Abstract In this paper, we present the ideal convergence of triple sequences for rough variables. Furthermore, sequence convergence plays an extremely important role in the fundamental theory of mathematics. This paper presents two types of ideal convergence of rough triple sequence: Convergence in trust and convergence in mean. Some mathematical properties of those new convergence concepts are also given. In addition, we introduce ideal Cauchy triple sequence in rough spaces.

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