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Journal articles on the topic 'Biotypic Characterization of Klebsiella oxytoca'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Trivedi, Mahendra Kumar, Shrikant Patil, Harish Shettigar, Khemraj Bairwa, and Snehasis Jana. "Phenotypic and Biotypic Characterization of Klebsiella oxytoca: An Impact of Biofield Treatment." Microbial & Biochemical Technology 7, no. 4 (2015): 202–5. https://doi.org/10.4172/1948-5948.1000205.

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Klebsiella oxytoca (K. oxytoca) is a Gram-negative microbe generally associated with community and hospital-acquired infections. Due to its clinical significance, we evaluated the effect of biofield treatment on phenotype and biotype characteristics of K. oxytoca (ATCC 43165). The study was performed into three groups i.e. C (control), T1 (treatment, revived); and T2 (treatment, lyophilized). Subsequently, groups T1 and T2 were received biofield treatment and control group was remained as untreated. The antimicrobial sensitivity results showed 3.33% and 6.67% alteration in antimicrobials susce

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2

Marchese, Anna, Guillaume Arlet, Gian Carlo Schito, Philippe H. Lagrange та Alain Philippon. "Characterization of FOX-3, an AmpC-Type Plasmid-Mediated β-Lactamase from an Italian Isolate ofKlebsiella oxytoca". Antimicrobial Agents and Chemotherapy 42, № 2 (1998): 464–67. http://dx.doi.org/10.1128/aac.42.2.464.

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ABSTRACT Klebsiella oxytoca 1731, which showed a wide spectrum of resistance to β-lactams, including cefoxitin, was isolated in 1994 from a patient in Genoa, Italy. This strain contained a plasmid-mediated AmpC β-lactamase with a pI of 7.25. Sequencing of the corresponding DNA of K. oxytoca 1731 revealed 96 and 97% identities of the deduced amino acid sequence with FOX-1 and FOX-2, respectively.

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3

Gómez, Marta, Arancha Valverde, Rosa del Campo, Juan Miguel Rodríguez, and Antonio Maldonado-Barragán. "Phenotypic and Molecular Characterization of Commensal, Community-Acquired and Nosocomial Klebsiella spp." Microorganisms 9, no. 11 (2021): 2344. http://dx.doi.org/10.3390/microorganisms9112344.

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Klebsiella spp. is a relevant pathogen that can present acquired resistance to almost all available antibiotics, thus representing a serious threat for public health. While most studies have been focused on isolates causing community-acquired and nosocomial infections, little is known about the commensal isolates colonizing healthy subjects. We describe the molecular identification and the phenotypic characterization of commensal Klebsiella spp. from breast milk of healthy women and faeces from healthy breast-fed infants, which were compared with isolates from community-acquired infections and

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4

Feng, Lei, Xiufen Li, Guocheng Du, and Jian Chen. "Characterization and fouling properties of exopolysaccharide produced by Klebsiella oxytoca." Bioresource Technology 100, no. 13 (2009): 3387–94. http://dx.doi.org/10.1016/j.biortech.2009.02.016.

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5

Feng, Lei, Xiufen Li, Guocheng Du, and Jian Chen. "Adsorption and fouling characterization of Klebsiella oxytoca to microfiltration membranes." Process Biochemistry 44, no. 11 (2009): 1289–92. http://dx.doi.org/10.1016/j.procbio.2009.07.017.

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6

Khalifa, A. Y. Z., and M. F. Aldayel. "Isolation and characterization of Klebsiella oxytoca from the rhizosphere of Lotus corniculatus and its biostimulating features." Brazilian Journal of Biology 82 (September 30, 2022): 1–7. https://doi.org/10.1590/1519-6984.266395.

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Khalifa, A. Y. Z., Aldayel, M. F. (2022): Isolation and characterization of Klebsiella oxytoca from the rhizosphere of Lotus corniculatus and its biostimulating features. Brazilian Journal of Biology (e266395) 82: 1-7, DOI: 10.1590/1519-6984.266395, URL: http://dx.doi.org/10.1590/1519-6984.266395

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7

Amosun, E. A., and E. O. Ojo. "Phenotypic detection of extended spectrum beta-lactamase production in clinical and non - clinical isolates of klebsiella species of animal origins in Abeokuta, Nigeria." Nigerian Veterinary Journal 43, no. 4 (2023): 50–63. http://dx.doi.org/10.4314/nvj.v43i4.5.

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Production of extended-spectrum β-lactamases (ESBLs) confer resistance to β-lactam antibiotics. This study investigated the presence of ESBL-producing Klebsiella spp in clinical and non-clinical samples from different animal species in Abeokuta, Nigeria. The species of Klebsiella were determined by biochemical characterization (Oxoid Microbact GNB 24E®), while phenotypic ESBL-production was confirmed by using the cefpodoxime and cefpodoxime/clavulanic acid combination disc kit. Ninety-five Klebsiella isolates were investigated in this study. Fifty-five (57.9%) of the isolates were obtained fro

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8

Sivolodskii, E. P., and O. A. Freylikhman. "Genetic and phenotypic characteristics of Klebsiella michiganensis isolates." Russian Journal of Infection and Immunity 9, no. 5-6 (2020): 648–54. http://dx.doi.org/10.15789/2220-7619-2019-5-6-648-654.

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The aim of the study was to identify an optimal research target for detection of Klebsiella michiganensis isolates, determine their genetic and phenotypic characteristics necessary for identification. Here, we examined 11 Klebsiella oxytoca strains, lacking (atypical, negative) a marker 5-aminosalicylate decarboxylase (detected by the chromogenic reaction by 5-aminosalicylic acid) unique for the genus Klebsiella bacteria. They were selected for genetic analysis subsequent to a phenotypic characterization of K. oxytoca clinical isolates, collected in within 2015–2018 period in medical instituti

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Yasin, Rimsha, Sunbul Rasheed, Mohsin Tassawar Cheema, and Aatif Amin. "ISOLATION AND CHARACTERIZATION OF PLANT GROWTH-PROMOTING BACTERIA FROM DIFFERENT RHIZOSPHERIC SOILS." JOURNAL OF MICROBIOLOGY AND MOLECULAR GENETICS 3, no. 3 (2022): 179–89. http://dx.doi.org/10.52700/jmmg.v3i3.94.

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The production of indole acetic acid (IAA) is a significant property of rhizospheric bacteria to stimulate and promote plant growth. In this investigation, indole acetic acid-producing bacteria from the rhizosphere of five distinct plants (Wheat, Gulchen, Rose, Lady Finger, and Bouginvella) were isolated and characterized. Bacterial strains were isolated and identified by morphological characterization. Out of 30 bacterial isolates, 5 isolates were selected as efficient producers of Indole acetic acid. These selected bacterial isolates were subjected to several biochemical tests for identifica

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10

Wu, Shang Wei, Kathrine Dornbusch та Göran Kronvall. "Genetic Characterization of Resistance to Extended-Spectrum β-Lactams in Klebsiella oxytoca Isolates Recovered from Patients with Septicemia at Hospitals in the Stockholm Area". Antimicrobial Agents and Chemotherapy 43, № 5 (1999): 1294–97. http://dx.doi.org/10.1128/aac.43.5.1294.

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ABSTRACT Two β-lactamase gene regions were characterized by DNA sequencing in eight clinical isolates of Klebsiella oxytoca. Thebla OXY-2a region encoded a β-lactamase nearly identical to OXY-2 (one amino acid residue substituted) and conferred aztreonam and cefuroxime resistance on the K. oxytoca isolates. Overproduction of OXY-2a was caused by a G-to-A substitution of the fifth nucleotide in the −10 consensus sequence ofbla OXY-2a. Thebla OXY-1a was identified in a susceptible strain, and the OXY-1a enzyme differed from OXY-1 by two amino acid residues.

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11

Walker, M. J., R. G. Birch, and J. M. Pemberton. "Cloning and characterization of an albicidin resistance gene from Klebsiella oxytoca." Molecular Microbiology 2, no. 4 (1988): 443–54. http://dx.doi.org/10.1111/j.1365-2958.1988.tb00050.x.

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12

Wu, Xiaobing, Yi Liang, Qianyi Li, Juan Zhou, and Minnan Long. "Characterization and cloning of oxygen-tolerant hydrogenase from Klebsiella oxytoca HP1." Research in Microbiology 162, no. 3 (2011): 330–36. http://dx.doi.org/10.1016/j.resmic.2010.12.003.

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13

Wu, S. W., K. Dornbusch, E. Göransson, U. Ransjö, and G. Kronvall. "Characterization of Klebsiella oxytoca septicaemia isolates resistant to aztreonam and cefuroxime." Journal of Antimicrobial Chemotherapy 28, no. 3 (1991): 389–97. http://dx.doi.org/10.1093/jac/28.3.389.

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14

Abdurehman Damissie, Abdallahi, and Kedir Abdurahman Musa. "Isolation, Assessments of Risk Factors, and Antimicrobial Susceptibility Test of Klebsiella from Gut of Bee in and around Haramaya University Bee Farm, East Hararghe, Oromia Regional State, Ethiopia." Veterinary Medicine International 2022 (July 30, 2022): 1–7. http://dx.doi.org/10.1155/2022/9460543.

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A cross-sectional study was employed from March 2021 to October 2021 to isolate and identify Klebsiella species found in the gut of honey bees collected from worker of honey bee (Apis mellifera) from hives in Haramaya University bee farm, Damota and Finqile’s, managed under traditional and modern beekeeping apiculture. From the selected farm, a total of 60 samples of live adult honey bees were collected purposively. The live adult worker of the honey bee was individually surface-sterilized and complete alimentary canals of the worker bee were dissected and processed for Klebsiella isolation. D

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15

Qian, Yilei, L. P. Yomano, J. F. Preston, H. C. Aldrich, and L. O. Ingram. "Cloning, Characterization, and Functional Expression of the Klebsiella oxytoca Xylodextrin Utilization Operon (xynTB) in Escherichia coli." Applied and Environmental Microbiology 69, no. 10 (2003): 5957–67. http://dx.doi.org/10.1128/aem.69.10.5957-5967.2003.

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ABSTRACT Escherichia coli is being developed as a biocatalyst for bulk chemical production from inexpensive carbohydrates derived from lignocellulose. Potential substrates include the soluble xylodextrins (xyloside, xylooligosaccharide) and xylobiose that are produced by treatments designed to expose cellulose for subsequent enzymatic hydrolysis. Adjacent genes encoding xylobiose uptake and hydrolysis were cloned from Klebsiella oxytoca M5A1 and are functionally expressed in ethanologenic E. coli. The xylosidase encoded by xynB contains the COG3507 domain characteristic of glycosyl hydrolase f

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16

Ramachandran, Devasena Umai, and Meenambiga Setti Sudharsan. "Molecular Characterization of Antibiotic Resistant Genes among Gram Negative Clinical Isolates." Trends in Sciences 19, no. 4 (2022): 2687. http://dx.doi.org/10.48048/tis.2022.2687.

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Increasing antibiotic resistance is a threat worldwide. Deep studies have to be done for correct and appropriate usage of antibiotics for treating infections efficiently and to curtail the spread of resistance. Hence, this study is aimed at understanding the prevalence of antibiotic resistance genes among 35 gram-negative bacterial isolates. By performing biochemical tests, the isolates were identified to be Escherichia coli (n = 15), Klebsiella oxytoca (n = 3), Klebsiella pneumoniae (n = 5), Proteus mirabilis (n = 4), Proteus vulgaris (n = 1) and Pseudomonas aeruginosa (n = 7). Antibiotic sus

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17

Abdel-Aziz, Nagwa, A. Atallah, S. Abdel-Aal, E. Mohamed, S. Ibrahim, and A. Zein Elabedeen. "ISOLATION, IDENTIFICATION AND MOLECULAR CHARACTERIZATION OF PECTINASE PRODUCING BACTERIAL ISOLATE Klebsiella oxytoca." Arab Universities Journal of Agricultural Sciences 27, no. 1 (2019): 553–61. http://dx.doi.org/10.21608/ajs.2019.43665.

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18

Fujita, Ai, Kouji Kimura, Satoru Yokoyama, et al. "Characterization of Piperacillin/Tazobactam-Resistant Klebsiella oxytoca Recovered from a Nosocomial Outbreak." PLOS ONE 10, no. 11 (2015): e0142366. http://dx.doi.org/10.1371/journal.pone.0142366.

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19

Zhang, Yao, Zhiping Feng, Hongzhu Xiang, Xian Zhang, and Lijuan Yang. "Characterization of Feruloyl Esterase from Klebsiella oxytoca Z28 and Its Application in the Release of Ferulic Acid from De-Starching Wheat Bran." Microorganisms 11, no. 4 (2023): 989. http://dx.doi.org/10.3390/microorganisms11040989.

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Feruloyl esterase (EC3.1.1.73; FAE) can degrade biomass to release ferulic acid (FA), which has a high application in bioprocessing, food, pharmaceutical, paper, feed, and other industrial fields. A strain of Klebsiella oxytoca Z28 with ferulic esterase activity was screened from Daqu. In addition, the FAE gene was expressed in Escherichia coli BL21 (DE3). The enzyme consists of 340 amino acids with a molecular mass of 37.7 kDa. The FAE enzyme activity was 463 U/L when the substrate was ethyl 4-hydroxy-3-methoxycinnamate and the optimum temperature and pH were 50 °C and 8.0, respectively. The

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20

Wendel, Andreas F., Alexander H. B. Brodner, Stephan Wydra та ін. "Genetic Characterization and Emergence of the Metallo-β-Lactamase GIM-1 in Pseudomonas spp. and Enterobacteriaceae during a Long-Term Outbreak". Antimicrobial Agents and Chemotherapy 57, № 10 (2013): 5162–65. http://dx.doi.org/10.1128/aac.00118-13.

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ABSTRACTSince the first isolation in 2002, the metallo-β-lactamase GIM-1 has not been detected outside Germany. The data presented here, for 50 clinicalblaGIM-1-positive isolates, includingPseudomonasspp. andEnterobacteriaceae(Enterobacter cloacae,Klebsiella oxytoca,Serratia marcescens,Escherichia coli, andCitrobacter freundii), collected between 2007 and 2012 at the original site in an ongoing outbreak, demonstrate a diverse genetic background and dissemination of the gene conferring resistance to enteric bacteria.

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21

Wilde, Caroline, Sophie Bachellier, Maurice Hofnung, and Jean-Marie Clément. "Transposition of IS1397 in the FamilyEnterobacteriaceae and First Characterization of ISKpn1, a New Insertion Sequence Associated withKlebsiella pneumoniae Palindromic Units." Journal of Bacteriology 183, no. 15 (2001): 4395–404. http://dx.doi.org/10.1128/jb.183.15.4395-4404.2001.

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ABSTRACT IS1397 and ISKpn1 are IS3family members which are specifically inserted into the loop of palindromic units (PUs). IS1397 is shown to transpose into PUs with sequences close or identical to the Escherichia coli consensus, even in other enterobacteria (Salmonella enterica serovar Typhimurium, Klebsiella pneumoniae, and Klebsiella oxytoca). Moreover, we show that homologous intergenic regions containing PUs constitute IS1397 transpositional hot spots, despite bacterial interspersed mosaic element structures that differ among the three species. ISKpn1, described here for the first time, i

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22

Dlamini, Abednego M., Paul S. Peiris, John H. Bavor, and Kasipathy Kailasapathy. "Characterization of the exopolysaccharide produced by a whey utilizing strain of Klebsiella oxytoca." African Journal of Biotechnology 6, no. 22 (2007): 2603–11. http://dx.doi.org/10.5897/ajb2007.000-2416.

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23

Pope, Scott D., Li-Ling Chen, and Valley Stewart. "Purine Utilization by Klebsiella oxytoca M5al: Genes for Ring-Oxidizing and -Opening Enzymes." Journal of Bacteriology 191, no. 3 (2008): 1006–17. http://dx.doi.org/10.1128/jb.01281-08.

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ABSTRACT The enterobacterium Klebsiella oxytoca uses a variety of inorganic and organic nitrogen sources, including purines, nitrogen-rich compounds that are widespread in the biosphere. We have identified a 23-gene cluster that encodes the enzymes for utilizing purines as the sole nitrogen source. Growth and complementation tests with insertion mutants, combined with sequence comparisons, reveal functions for the products of these genes. Here, we report our characterization of 12 genes, one encoding guanine deaminase and the others encoding enzymes for converting (hypo)xanthine to allantoate.

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Abreu, Afonso Gomes, Sirlei Garcia Marques, Valério Monteiro-Neto, Roberto Morais Luz de Carvalho та Azizedite Guedes Gonçalves. "Nosocomial infection and characterization of extended-spectrum β-lactamases-producing Enterobacteriaceae in Northeast Brazil". Revista da Sociedade Brasileira de Medicina Tropical 44, № 4 (2011): 441–46. http://dx.doi.org/10.1590/s0037-86822011000400008.

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INTRODUCTION: Extended spectrum β-lactamases (ESBLs) are enzymes that degrade β-lactam antibiotics and have been reported to be an important cause of nosocomial infection in worldwide. METHODS: During 2009, 659 enterobacteria strains were isolated from different clinical specimens and tested for ESBL production. The disk approximation test, combined disk method and addition of clavulanic acid were used for phenotypic detection of the ESBL-producing strains and PCR for detection of the blaTEM and blaCTX-M genes. RESULTS: Among the isolates, 125 were ESBL producers. The blaCTX-M and blaTEM genes

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Mutuku, Christopher, Szilvia Melegh, Krisztina Kovacs та ін. "Characterization of β-Lactamases and Multidrug Resistance Mechanisms in Enterobacterales from Hospital Effluents and Wastewater Treatment Plant". Antibiotics 11, № 6 (2022): 776. http://dx.doi.org/10.3390/antibiotics11060776.

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Antimicrobials in wastewater promote the emergence of antibiotic resistance, facilitated by selective pressure and transfer of resistant genes. Enteric bacteria belonging to Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, Enterobacter cloacae, and Citrobacter species (n = 126) from hospital effluents and proximate wastewater treatment plant were assayed for susceptibility to four antimicrobial classes. The β-lactamase encoding genes harbored in plasmids were genotyped and the plasmids were sequenced. A multidrug resistance phenotype was found in 72% (n = 58) of E. coli isolates, 7

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26

Satter, Sarmin, and SM Shamsuzzaman. "Phenotypic and Genotypic Characterization of Extended-spectrum beta-lactamase Producing Escherichia coli and Klebsiella species Isolated from a Tertiary Care Hospital in Bangladesh." Bangladesh Journal of Medical Microbiology 10, no. 2 (2016): 4–8. http://dx.doi.org/10.3329/bjmm.v10i2.51924.

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This study was conducted to determine the presence of ESBL producing Escherichia coli and Klebsiella species in a tertiary care hospital of Bangladesh, as well as to observe the patterns of antibiotic resistance and antibiotic resistance genes among them. A total of 166 Escherichia coli,Klebsiella pneumoniae and Klebsiella oxytoca were isolated from urine, wound swab, pus, sputum and blood samples of patients of Dhaka Medical College Hospital. Antibiotic susceptibility test wasperformed by disk-diffusion technique. ESBL producers were detected phenotypically by Double-disk synergy (DDS) test.

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27

Guzmán-Puche, Julia, Rim Jenayeh, María Pérez-Vázquez, et al. "Characterization of OXA-48-producing Klebsiella oxytoca isolates from a hospital outbreak in Tunisia." Journal of Global Antimicrobial Resistance 24 (March 2021): 306–10. http://dx.doi.org/10.1016/j.jgar.2021.01.008.

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28

Abd El-Tawab, A. A., A. O. Selim, and A. M. Soliman. "Phenotypic and Genotypic Characterization of Some Bacterial Isolates (Escherichia Coli, Klebsiella Oxytoca ) From Chickens." Benha Veterinary Medical Journal 35, no. 2 (2018): 284–302. http://dx.doi.org/10.21608/bvmj.2018.96307.

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29

Barua, Tanushree, Malini Shariff, and S. S. Thukral. "Detection and Characterization of AmpC B-Lactamases in Indian Clinical Isolates of Escherichia coli, Klebsiella pneumoniae and Klebsiella oxytoca." Universal Journal of Microbiology Research 1, no. 2 (2013): 15–21. http://dx.doi.org/10.13189/ujmr.2013.010201.

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30

Yamada, Amanda Yaeko, Andreia Rodrigues de Souza, Amanda Maria de Jesus Bertani, et al. "Genomic Characterization of a Clinical NDM-1-Producing Klebsiella michiganensis from Brazil." Microorganisms 12, no. 7 (2024): 1408. http://dx.doi.org/10.3390/microorganisms12071408.

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Public health faces daily challenges due to increasing reports of pathogenic microorganisms with new antimicrobial resistance. Klebsiella michiganensis, an emerging pathogen, poses difficulty in its identification using conventional techniques. This study presents the first documented case of NDM-1-producing K. michiganensis in Brazil, identified as the new ST418. Initially, the isolate from a tracheal secretion was misidentified as K. oxytoca. However, accurate identification was achieved through ANI analyses. Whole-genome sequencing was conducted to characterize the genetic context of the re

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Fernandes, Rúben, Paula Amador, Carla Oliveira, and Cristina Prudêncio. "Molecular Characterization of ESBL-Producing Enterobacteriaceae in Northern Portugal." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/782897.

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Extended-spectrumβ-lactamases (ESBLs) prevalence was studied in the north of Portugal, among 193 clinical isolates belonging to citizens in a district in the boundaries between this country and Spain from a total of 7529 clinical strains. In the present study we recovered some members of Enterobacteriaceae family, producing ESBL enzymes, includingEscherichia coli(67.9%),Klebsiella pneumoniae(30.6%),Klebsiella oxytoca(0.5%),Enterobacter aerogenes(0.5%), andCitrobacter freundii(0.5%).β-lactamases genes blaTEM, blaSHV, and blaCTX-M were screened by polymerase chain reaction (PCR) and sequencing a

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Buddhi, Charana Walpola, Arunakumara KKIU, and Yoon Min-Ho. "Isolation and characterization of phosphate solubilizing bacteria (Klebsiella oxytoca) with enhanced tolerant to environmental stress." African Journal of Microbiology Research 8, no. 31 (2014): 2970–78. http://dx.doi.org/10.5897/ajmr2013.5771.

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Cazacu, Nicoleta, Claudia G. Chilom, Sorina Iftimie, et al. "Biogenic Ferrihydrite Nanoparticles Produced by Klebsiella oxytoca: Characterization, Physicochemical Properties and Bovine Serum Albumin Interactions." Nanomaterials 12, no. 2 (2022): 249. http://dx.doi.org/10.3390/nano12020249.

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The synthesis of nanoparticles inside microorganisms is an economical alternative to chemical and physical methods of nanoparticle synthesis. In this study, ferrihydrite nanoparticles synthesized by Klebsiella oxytoca bacterium in special conditions were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), small-angle X-ray (SAXS), UV-Vis spectroscopy, fluorescence, fluorescence resonance energy transfer (FRET), and molecular docking. The morphology and the structure of the particles were characterized by means of SEM and SAXS. The elemental content was

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Baldi, F., D. Marchetto, D. Battistel, et al. "Iron-binding characterization and polysaccharide production by Klebsiella oxytoca strain isolated from mine acid drainage." Journal of Applied Microbiology 107, no. 4 (2009): 1241–50. http://dx.doi.org/10.1111/j.1365-2672.2009.04302.x.

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35

Brown, Teagan L., Steve Petrovski, Dannielle Hoyle, Hiu Tat Chan, Peter Lock, and Joseph Tucci. "Characterization and formulation into solid dosage forms of a novel bacteriophage lytic against Klebsiella oxytoca." PLOS ONE 12, no. 8 (2017): e0183510. http://dx.doi.org/10.1371/journal.pone.0183510.

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36

Deloménie, Claudine, Sylvaine Fouix, Sandrine Longuemaux, et al. "Identification and Functional Characterization of Arylamine N-Acetyltransferases in Eubacteria: Evidence for Highly Selective Acetylation of 5-Aminosalicylic Acid." Journal of Bacteriology 183, no. 11 (2001): 3417–27. http://dx.doi.org/10.1128/jb.183.11.3417-3427.2001.

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ABSTRACT Arylamine N-acetyltransferase activity has been described in various bacterial species. BacterialN-acetyltransferases, including those from bacteria of the gut flora, may be involved in the metabolism of xenobiotics, thereby exerting physiopathological effects. We characterized these enzymes further by steady-state kinetics, time-dependent inhibition, and DNA hybridization in 40 species, mostly from the human intestinal microflora. We report for the first timeN-acetyltransferase activity in 11 species ofProteobacteriaceae from seven genera: Citrobacter amalonaticus, Citrobacter farmer

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Sebghati, Tricia A. Schurtz, Timo K. Korhonen, Douglas B. Hornick, and Steven Clegg. "Characterization of the Type 3 Fimbrial Adhesins ofKlebsiella Strains." Infection and Immunity 66, no. 6 (1998): 2887–94. http://dx.doi.org/10.1128/iai.66.6.2887-2894.1998.

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ABSTRACT The Klebsiella pneumoniae fimbrial adhesin, MrkD, mediates adherence to the basolateral surfaces of renal and pulmonary epithelia and to the basement membranes of tissues. Although all isolates possessing the MrkD adhesin mediate the agglutination, in vitro, of erythrocytes treated with tannic acid, the mrkDgene is not conserved within species. The ability of a plasmid-bornemrkD gene product to mediate binding to type V collagen is associated frequently with strains of K. oxytoca and rarely with strains of K. pneumoniae. In K. pneumoniae, the MrkD adhesin is located within a chromosom

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Otuyelu, Frank Olakunle, Toyin Olayemi Agbabiaka, Ridwan Tope Azeez, Ruth Bukola Tomilayo, Bashirat Abdulkareem Sa'ad, and Suad Oluwakemi Katibi. "SPECTRAL CHARACTERIZATION AND EFFICACY OF BIOGENIC SYNTHESIZED SILVER NANOPARTICLES USING SECONDARY METABOLITE OF PSEUDOMONAS AERUGINOSA ON SELECTED PATHOGENS." FUDMA JOURNAL OF SCIENCES 9, no. 2 (2025): 242–47. https://doi.org/10.33003/fjs-2025-0902-3189.

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Bacteria resistance to conventional antibiotics has made researchers look for other possible alternatives which include the use of nanoparticles, plant extracts, production of bacteriocin, organic acids etc. This study is focused on biosynthesizing AgNPs using secondary metabolite of Pseudomonas aeruginosa, characterize and evaluate its effectiveness against selected bacteria pathogens. FTIR, UV-visible spectroscopy, TEM analyses were used to characterize, agar disk diffusion method was employed for antibacterial sssay. Bacterial pathogens used include Escherichia coli, Serratia liquefaciens,

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Bermudes, H., F. Jude, E. B. Chaibi та ін. "Molecular Characterization of TEM-59 (IRT-17), a Novel Inhibitor-Resistant TEM-Derived β-Lactamase in a Clinical Isolate of Klebsiella oxytoca". Antimicrobial Agents and Chemotherapy 43, № 7 (1999): 1657–61. http://dx.doi.org/10.1128/aac.43.7.1657.

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ABSTRACT A clinical isolate of Klebsiella oxytoca (Kox 443) was found to have a low-level resistance to broad-spectrum penicillins (MICs of amoxicillin and ticarcillin, 256 and 32 μg/ml, respectively), without substantial potentiation by 2 μg of clavulanic acid per ml (amoxicillin- and ticarcillin-clavulanate, 128 and 8 μg/ml, respectively), while being fully susceptible to cephalosporins and other β-lactam antibiotics. These resistances were carried by a ca. 50-kb conjugative plasmid that encodes a single β-lactamase with a pI of 5.6. Compared to TEM-2, this enzyme exhibited a 3- to 30-fold h

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Pérez-Llarena, Francisco José, Ana Fernández, Laura Zamorano та ін. "Characterization of a Novel IMP-28 Metallo-β-Lactamase from a Spanish Klebsiella oxytoca Clinical Isolate". Antimicrobial Agents and Chemotherapy 56, № 8 (2012): 4540–43. http://dx.doi.org/10.1128/aac.00776-12.

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ABSTRACTAn isolate ofKlebsiella oxytocacarrying a novel IMP metallo-β-lactamase was discovered in Madrid, Spain. TheblaIMP-28gene is part of a chromosomally located class I integron. The IMP-28kcat/Kmvalues for ampicillin, ceftazidime, and cefepime and, to a lesser extent, imipenem and meropenem, are clearly lower than those of IMP-1. The His306Gln mutation may induce important modifications of the L3 loop and thus of substrate accessibility and hydrolysis and be the main reason for this behavior.

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Minnan, L., H. Jinli, W. Xiaobin, et al. "Isolation and characterization of a high H2-producing strain Klebsiella oxytoca HP1 from a hot spring." Research in Microbiology 156, no. 1 (2005): 76–81. http://dx.doi.org/10.1016/j.resmic.2004.08.004.

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Kim, Young-Mi, Kyung-Joon Ahn, Teruhiko Beppu, and Takeshi Uozumi. "Nucleotide sequence of the nifLA operon of Klebsiella oxytoca NG13 and characterization of the gene products." Molecular and General Genetics MGG 205, no. 2 (1986): 253–59. http://dx.doi.org/10.1007/bf00430436.

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Hua, Jing-qiu, and Lei Yu. "Cloning and characterization of a Flavin-free oxygen-insensitive azoreductase from Klebsiella oxytoca GS-4-08." Biotechnology Letters 41, no. 3 (2019): 371–78. http://dx.doi.org/10.1007/s10529-019-02647-9.

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Shin, Se Ra, Seong Mi Noh, Woo Kyung Jung та ін. "Characterization of Extended-Spectrum β-Lactamase-Producing and AmpC β-Lactamase-Producing Enterobacterales Isolated from Companion Animals in Korea". Antibiotics 10, № 3 (2021): 249. http://dx.doi.org/10.3390/antibiotics10030249.

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The emergence of extended-spectrum cephalosporin (ESC)-resistant Gram-negative bacteria is of great concern in both human and veterinary medicine. The aim of this study was to investigate ESC-resistant bacterial isolates from companion animals in South Korea between 2017 and 2019. Isolates with ESC resistance genes, which were identified by PCR, were assessed for genetic relatedness by multi-locus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). In total, 91 ESC-resistant Escherichia coli, Klebsiella spp., Serratia spp., and Enterobacter cloacae isolates harbored the blaTEM

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Wu, Shang Wei, Kathrine Dornbusch, Göran Kronvall та Mari Norgren. "Characterization and Nucleotide Sequence of a Klebsiella oxytoca Cryptic Plasmid Encoding a CMY-Type β-Lactamase: Confirmation that the Plasmid-Mediated Cephamycinase Originated from the Citrobacter freundii AmpC β-Lactamase". Antimicrobial Agents and Chemotherapy 43, № 6 (1999): 1350–57. http://dx.doi.org/10.1128/aac.43.6.1350.

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ABSTRACT Plasmid pTKH11, originally obtained by electroporation of aKlebsiella oxytoca plasmid preparation intoEscherichia coli XAC, expressed a high level of an AmpC-like β-lactamase. The enzyme, designated CMY-5, conferred resistance to extended-spectrum β-lactams in E. coli; nevertheless, the phenotype was cryptic in the K. oxytocadonor. Determination of the complete nucleotide sequence of pTKH11 revealed that the 8,193-bp plasmid encoded seven open reading frames, including that for the CMY-5 β-lactamase (bla CMY-5). Thebla CMY-5 product was similar to the plasmidic CMY-2 β-lactamase of K.

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Ellington, Matthew J., Frances Davies, Elita Jauneikaite, et al. "A Multispecies Cluster of GES-5 Carbapenemase–Producing Enterobacterales Linked by a Geographically Disseminated Plasmid." Clinical Infectious Diseases 71, no. 10 (2019): 2553–60. http://dx.doi.org/10.1093/cid/ciz1130.

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Abstract Background Early and accurate treatment of infections due to carbapenem-resistant organisms is facilitated by rapid diagnostics, but rare resistance mechanisms can compromise detection. One year after a Guiana Extended-Spectrum (GES)-5 carbapenemase–positive Klebsiella oxytoca infection was identified by whole-genome sequencing (WGS; later found to be part of a cluster of 3 cases), a cluster of 11 patients with GES-5–positive K. oxytoca was identified over 18 weeks in the same hospital. Methods Bacteria were identified by matrix-assisted laser desorption/ionization–time of flight mass

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Bardasheva, A. V., N. V. Fomenko, T. V. Kalymbetova, et al. "Genetic characterization of clinical Klebsiella isolates circulating in Novosibirsk." Vavilov Journal of Genetics and Breeding 25, no. 2 (2021): 234–45. http://dx.doi.org/10.18699/vj21.49-o.

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72 clinical strains of Klebsiella spp. isolated from samples obtained from humans in Novosibirsk, Russia, were analyzed. Species identification of strains was performed using 16S rRNA and rpoB gene sequences. It was revealed that Klebsiella pneumoniae strains were dominant in the population (57 strains), while the remaining 15 strains were K. grimontii, K. aerogenes, K. oxytoca and K. quasipneumoniae. By molecular serotyping using the wzi gene sequence, K. pneumoniae strains were assigned to twenty-one K-serotypes with a high proportion of virulent K1- and K2-serotypes. It was found that K. pn

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Titapoka Chantorn, Sudathip, Nawapan Pongsapipatana, Suttipan Keawsompong, Arunee Ingkakul, Dietmar Haltrich, and Sunee Nitisinprasert. "Characterization of mannanase S1 from Klebsiella oxytoca KUB-CW2-3 and its application in copra mannan hydrolysis." ScienceAsia 39, no. 3 (2013): 236. http://dx.doi.org/10.2306/scienceasia1513-1874.2013.39.236.

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Hengen, P. N., D. Denicourt, and V. N. Iyer. "Isolation and characterization of kikA, a region on IncN group plasmids that determines killing of Klebsiella oxytoca." Journal of Bacteriology 174, no. 9 (1992): 3070–77. http://dx.doi.org/10.1128/jb.174.9.3070-3077.1992.

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Guo, Fa-Mou, Jian-Ping Wu, Li-Rong Yang, and Gang Xu. "Overexpression of a nitrile hydratase from Klebsiella oxytoca KCTC 1686 in Escherichia coli and its biochemical characterization." Biotechnology and Bioprocess Engineering 20, no. 6 (2015): 995–1004. http://dx.doi.org/10.1007/s12257-015-0370-z.

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