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Journal articles on the topic 'Methionine conjugation'

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1

Li, Yang, Chenshan Lian, Zhanfeng Hou, et al. "Intramolecular methionine alkylation constructs sulfonium tethered peptides for protein conjugation." Chemical Communications 56, no. 26 (2020): 3741–44. http://dx.doi.org/10.1039/d0cc00377h.

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2

Elledge, Susanna K., Hai L. Tran, Alec H. Christian, et al. "Systematic identification of engineered methionines and oxaziridines for efficient, stable, and site-specific antibody bioconjugation." Proceedings of the National Academy of Sciences 117, no. 11 (2020): 5733–40. http://dx.doi.org/10.1073/pnas.1920561117.

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The field of chemical modification of proteins has been dominated by random modification of lysines or more site-specific labeling of cysteines, each with attendant challenges. Recently, we have developed oxaziridine chemistry for highly selective modification of methionine called redox-activated chemical tagging (ReACT) but have not broadly tested the molecular parameters for efficient and stable protein modification. Here we systematically scanned methionines throughout one of the most popular antibody scaffolds, trastuzumab, used for antibody engineering and drug conjugation. We tested the
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3

KARMAKAR, SUBHENDU, SUDIPTA BHATTACHARYYA, and ARINDAM MUKHERJEE. "Effect of methionine and glucosamine conjugation on the anticancer activity of aromatic dinitrobenzamide mustards." Journal of Chemical Sciences 128, no. 3 (2016): 401–13. http://dx.doi.org/10.1007/s12039-015-1019-3.

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4

Ide, T., M. Horii, K. Kawashima, and T. Yamamoto. "Bile acid conjugation and hepatic taurine concentration in rats fed on pectin." British Journal of Nutrition 62, no. 3 (1989): 539–50. http://dx.doi.org/10.1079/bjn19890056.

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A relationship between bile acid conjugation and hepatic taurine concentration was investigated in rats fed on citrus pectin. When rats were fed on the diets containing varying amounts of pectin (10, 30, 60 and 100 g/kg dietary levels), biliary excretion of bile acids increased as the dietary levels of pectin increased. The increase was entirely due to the glycine-conjugated bile acids. The biliary excretion of taurine-conjugated bile acid was somewhat decreased as the dietary level of the fibre increased. Consequently, most of the bile acids were conjugated with glycine in rats fed on the die
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5

Angelico, M., C. Gandin, A. Nistri, L. Baiocchi, and L. Capocaccia. "Oral S-adenosyl-L-methionine (SAMe) administration enhances bile salt conjugation with taurine in patients with liver cirrhosis." Scandinavian Journal of Clinical and Laboratory Investigation 54, no. 6 (1994): 459–64. http://dx.doi.org/10.3109/00365519409085470.

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6

Al-Badu, L. E., O. Smirnov, and L. Kalachniuk. "Dietetic ingredients of small animals suffering from obesity and their biological role." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 20, no. 92 (2018): 3–7. http://dx.doi.org/10.32718/nvlvet9201.

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Obesity is a medical condition in which excess body fat has accumulated to the extent that it may have a negative effect on health. The daily ration of an adult cat must contain 40–45% of proteins, 20–25% of fats, 25–30% of carbohydrates. Low- fat diets are recommended to cats with overweight. Necessary amino acids are in the diet of cats with excess weight. Taurine is a sulfonic acid, which synthesizes in the body of animals and humans from the amino acid of cysteine. It plays an essential role in the digestion and assimilation of fats and lipids. The need for cats in taurine is due to their
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7

Dong, Shi-Hui, Nicole D. Frane, Quin H. Christensen, E. Peter Greenberg, Rajesh Nagarajan, and Satish K. Nair. "Molecular basis for the substrate specificity of quorum signal synthases." Proceedings of the National Academy of Sciences 114, no. 34 (2017): 9092–97. http://dx.doi.org/10.1073/pnas.1705400114.

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In severalProteobacteria, LuxI-type enzymes catalyze the biosynthesis of acyl–homoserine lactones (AHL) signals usingS-adenosyl–l-methionine and either cellular acyl carrier protein (ACP)-coupled fatty acids or CoA–aryl/acyl moieties as progenitors. Little is known about the molecular mechanism of signal biosynthesis, the basis for substrate specificity, or the rationale for donor specificity for any LuxI member. Here, we present several cocrystal structures of BjaI, a CoA-dependent LuxI homolog that represent views of enzyme complexes that exist along the reaction coordinate of signal synthes
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8

Coulombe, Philippe, Geneviève Rodier, Eric Bonneil, Pierre Thibault, and Sylvain Meloche. "N-Terminal Ubiquitination of Extracellular Signal-Regulated Kinase 3 and p21 Directs Their Degradation by the Proteasome." Molecular and Cellular Biology 24, no. 14 (2004): 6140–50. http://dx.doi.org/10.1128/mcb.24.14.6140-6150.2004.

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ABSTRACT Extracellular signal-regulated kinase 3 (ERK3) is an unstable mitogen-activated protein kinase homologue that is constitutively degraded by the ubiquitin-proteasome pathway in proliferating cells. Here we show that a lysineless mutant of ERK3 is still ubiquitinated in vivo and requires a functional ubiquitin conjugation pathway for its degradation. Addition of N-terminal sequence tags of increasing size stabilizes ERK3 by preventing its ubiquitination. Importantly, we identified a fusion peptide between the N-terminal methionine of ERK3 and the C-terminal glycine of ubiquitin in vivo
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9

Nojoumi, Saba, Ying Ma, Sergej Schwagerus, Christian P. R. Hackenberger, and Nediljko Budisa. "In-Cell Synthesis of Bioorthogonal Alkene Tag S-Allyl-Homocysteine and Its Coupling with Reprogrammed Translation." International Journal of Molecular Sciences 20, no. 9 (2019): 2299. http://dx.doi.org/10.3390/ijms20092299.

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In this study, we report our initial results on in situ biosynthesis of S-allyl-l-homocysteine (Sahc) by simple metabolic conversion of allyl mercaptan in Escherichia coli, which served as the host organism endowed with a direct sulfhydration pathway. The intracellular synthesis we describe in this study is coupled with the direct incorporation of Sahc into proteins in response to methionine codons. Together with O-acetyl-homoserine, allyl mercaptan was added to the growth medium, followed by uptake and intracellular reaction to give Sahc. Our protocol efficiently combined the in vivo synthesi
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10

Šarić, Mirela, Anke Vahrmann, Daniela Niebur, Verena Kluempers, Adrian B. Hehl та Henning Scholze. "Dual Acylation Accounts for the Localization of α19-Giardin in the Ventral Flagellum Pair of Giardia lamblia". Eukaryotic Cell 8, № 10 (2009): 1567–74. http://dx.doi.org/10.1128/ec.00136-09.

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ABSTRACT A Giardia-specific protein family denominated as α-giardins, represents the major protein component, besides tubulin, of the cytoskeleton of the human pathogenic parasite Giardia lamblia. One of its members, α19-giardin, carries an N-terminal sequence extension of MGCXXS, which in many proteins serves as a target for dual lipid conjugation: myristoylation at the glycine residue after removal of the methionine and palmitoylation at the cysteine residue. As the first experimental evidence of a lipid modification, we found α19-giardin to be associated with the membrane fraction of disrup
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11

Doherty, F. J., J. A. Wassell, and R. J. Mayer. "A putative protein-sequestration site involving intermediate filaments for protein degradation by autophagy. Studies with microinjected purified glycolytic enzymes in 3T3-L1 cells." Biochemical Journal 241, no. 3 (1987): 793–800. http://dx.doi.org/10.1042/bj2410793.

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Several glycolytic enzymes (lactate dehydrogenase, pyruvate kinase, glyceraldehyde-3-phosphate dehydrogenase) were radiolabelled by [125I]iodination, conjugation with 125I-labelled Bolton & Hunter reagent and reductive [3H]methylation, and their degradative rates after microinjection into 3T3-L1 cells compared with that of the extracellular protein bovine serum albumin. Although the albumin remains largely cytosolic in recipient cells, the glycolytic enzymes rapidly (less than 30 min) become insoluble, as measured by detergent and salt extractions. The microinjected glycolytic enzymes appe
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12

Mehri, Mehran. "Optimization of response surface and neural network models in conjugation with desirability function for estimation of nutritional needs of methionine, lysine, and threonine in broiler chickens." Poultry Science 93, no. 7 (2014): 1862–67. http://dx.doi.org/10.3382/ps.2013-03689.

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13

Reicks, M., and J. N. Hathcock. "Effects of methionine and other sulfur compounds on drug conjugations." Pharmacology & Therapeutics 37, no. 1 (1988): 67–79. http://dx.doi.org/10.1016/0163-7258(88)90020-4.

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14

Tan, Yuying, Xinghua Sun, Mingxu Xu, et al. "Polyethylene Glycol Conjugation of Recombinant Methioninase for Cancer Therapy." Protein Expression and Purification 12, no. 1 (1998): 45–52. http://dx.doi.org/10.1006/prep.1997.0805.

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15

Chesney, R. W., N. Gusowski, M. Padilla, and S. Lippincott. "Effect of amino acid intake on brush-border membrane uptake of sulfur amino acids." American Journal of Physiology-Renal Physiology 251, no. 1 (1986): F125—F131. http://dx.doi.org/10.1152/ajprenal.1986.251.1.f125.

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Alterations in the intake of sulfur amino acids (SAA) changes the rat renal brush-border membrane uptake of the beta-amino acid, taurine. A low-SAA diet enhances and a high-taurine diet reduces uptake (Chesney et al., Kidney Int. 24: 588-594, 1983). Neither the low-SAA diet nor the high-taurine diet alters the time course or concentration-dependent accumulation of the sulfur amino acids methionine and cystine or of inorganic sulfate. By contrast the uptake of beta-alanine, another beta-amino acid that competes with taurine, is greater in animals on the low-SAA diet. The high-taurine diet does
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16

HWANG, Debbie D. W., Li-Fan LIU, I.-Ching KUAN, Lih-Yuan LIN, Tsuey-Chyi S. TAM, and Ming F. TAM. "Co-expression of glutathione S-transferase with methionine aminopeptidase: a system of producing enriched N-terminal processed proteins in Escherichia coli." Biochemical Journal 338, no. 2 (1999): 335–42. http://dx.doi.org/10.1042/bj3380335.

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We describe here an Escherichia coli expression system that produces recombinant proteins enriched in the N-terminal processed form, by using glutathione S-transferase cGSTM1-1 and rGSTT1-1 as models, where c and r refer to chick and rat respectively. Approximately 90% of the cGSTM1-1 or rGSTT1-1 overexpressed in E. coliunder the control of a phoA promoter retained the initiator methionine residue that was absent from the mature isoenzymes isolated from tissues. The amount of initiator methionine was decreased to 40% of the expressed cGSTM1-1 when the isoenzyme was co-expressed with an exogeno
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17

Smothers, Dechelle B., Lukasz Kozubowski, Cheryl Dixon, Mark G. Goebl, and Neal Mathias. "The Abundance of Met30p Limits SCFMet30p Complex Activity and Is Regulated by Methionine Availability." Molecular and Cellular Biology 20, no. 21 (2000): 7845–52. http://dx.doi.org/10.1128/mcb.20.21.7845-7852.2000.

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ABSTRACT Ubiquitin-mediated degradation plays a crucial role in many fundamental biological pathways, including the mediation of cellular responses to changes in environmental conditions. A family of ubiquitin ligase complexes, called SCF complexes, found throughout eukaryotes, is involved in a variety of biological pathways. In Saccharomyces cerevisiae, an SCF complex contains a common set of components, namely, Cdc53p, Skp1p, and Hrt1p. Substrate specificity is defined by a variable component called an F-box protein. The F- box is a ∼40-amino-acid motif that allows the F-box protein to bind
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18

LIU, Li-Fan, Yen-Chywan LIAW, and F. Ming TAM. "Characterization of chicken-liver glutathione S-transferase (GST) A1-1 and A2-2 isoenzymes and their site-directed mutants heterologously expressed in Escherichia coli: identification of Lys-15 and Ser-208 on cGSTA1-1 as residues interacting with ethacrynic acid." Biochemical Journal 327, no. 2 (1997): 593–600. http://dx.doi.org/10.1042/bj3270593.

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Escherichia coli-expressed chicken-liver glutathione S-transferase, cGSTA1-1, displays high ethacrynic acid (EA)-conjugating activity. Molecular modelling of cGSTA1-1 with EA in the substrate binding site reveals that the side chain of Phe-111 protrudes into the substrate binding site and possibly interacts with EA. Replacement of Phe-111 with alanine resulted in an enzyme (F111A mutant) with a 4.5-fold increase in EA-conjugating activity (9.2 mmol/min per mg), and an incremental Gibbs free energy (ΔΔG) of 4.0 kJ/mol lower than that of the wild-type cGSTA1-1. Two other amino acid residues that
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19

Tomasi, Maria Lauda, Anna Skay, Ivan Tomasi, Pasquale Giordano, and Shelly C. Lu. "607 Ubiquitin-Conjugating Enzyme 9-Methionine Adenosyltransferase 2A-Bcl2 Axis Regulates Apoptosis in Liver and Colon Cancer Cells." Gastroenterology 142, no. 5 (2012): S—118. http://dx.doi.org/10.1016/s0016-5085(12)60447-8.

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20

Tomasi, Maria Lauda, Ivan Tomasi, Komal Ramani, et al. "S-adenosyl methionine regulates ubiquitin-conjugating enzyme 9 protein expression and sumoylation in murine liver and human cancers." Hepatology 56, no. 3 (2012): 982–93. http://dx.doi.org/10.1002/hep.25701.

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21

Gliesche, Christian G., and Peter Hirsch. "Mutagenesis and chromosome mobilization in Hyphomicrobium facilis B-522." Canadian Journal of Microbiology 38, no. 11 (1992): 1167–74. http://dx.doi.org/10.1139/m92-191.

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Spontaneously derived antibiotic-resistant mutants of Hyphomicrobium facilis B-522, a restricted facultative methylotroph, occurred at a high frequency on agar plates with low antibiotic concentrations. Mutants specifically defective in methanol oxidation have been obtained using an allyl alcohol direct selection technique. By chemical mutagenesis with N-methyl-N′ -nitro-N-nitrosoguanidine in the presence of chloramphenicol several stable auxotrophic mutants could be isolated: three leucine auxotrophs, two threonine auxotrophs, and two leucine–methionine double auxotrophic mutants. Optimal con
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22

Zhao, Mengmeng, Kun Song, Wenzhuo Hao та ін. "Non-proteolytic ubiquitination of OTULIN regulates NF-κB signaling pathway". Journal of Molecular Cell Biology 12, № 3 (2019): 163–75. http://dx.doi.org/10.1093/jmcb/mjz081.

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Abstract NF-κB signaling regulates diverse processes such as cell death, inflammation, immunity, and cancer. The activity of NF-κB is controlled by methionine 1-linked linear polyubiquitin, which is assembled by the linear ubiquitin chain assembly complex (LUBAC) and the ubiquitin-conjugating enzyme UBE2L3. Recent studies found that the deubiquitinase OTULIN breaks the linear ubiquitin chain, thus inhibiting NF-κB signaling. Despite the essential role of OTULIN in NF-κB signaling has been established, the regulatory mechanism for OTULIN is not well elucidated. To discover the potential regulat
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23

YEH, Horng-I., Jing-Yu LEE, Shu-Ping TSAI, Cheng-Hsilin HSIEH, and Ming F. TAM. "Rat kidney glutathione S-transferase 1 subunits have C-terminal truncations." Biochemical Journal 314, no. 3 (1996): 1017–25. http://dx.doi.org/10.1042/bj3141017.

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Cytosolic glutathione S-transferases (GSTs) from rat kidneys were purified by a combination of glutathione and S-hexylglutathione affinity columns. The isolated GSTs were subjected to reverse-phase HPLC and electrospray MS analysis. The major GST isoenzymes expressed in kidney are subunits 1, 2, 7 and 8. GST 1´, 3, and 4 are expressed in minor amounts. GST 10 is barely detectable in the male kidney cytosol. The molecular masses of these rat kidney GST subunits were determined by MS. The values obtained for subunits 1´, 2, 3, 4, 7, 8 and 10 are identical with those obtained for rat liver GSTs.
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24

Oluwafemi, Oluwatobi S., and Neerish Revaprasadu. "A Facile, “Green” One – Step, Room Temperature Synthesis of a Series of monodispersed MSe(M = Cd or Zn) Water Dispersible Nanoparticles." MRS Proceedings 1138 (2008). http://dx.doi.org/10.1557/proc-1138-ff12-19.

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AbstractWe herein report a facile, ‘green’ one- step synthesis of a series of monodispersed water-soluble selenide nanoparticles at room temperature. The capping ligands used include, cysteine, methionine, ascorbic acid and starch which function as agents of solubilisation, stabilization and conjugation sites for biomolecules. The synthetic approach involves the addition of an appropriate volume of selenide ion produced via the reduction of selenium powder in water to an aqueous solution containing the ligand- metal salt (MCl2 M = Zn or Cd). Optical spectroscopy shows that the particles are of
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25

Nichenametla, Sailendra N., Dwight A. L. Mattocks, Vishal Midya, and Jelena Shneyder. "Differential Effects of Sulfur Amino Acid-Restricted and Low-Calorie Diets on Gut Microbiome Profile and Bile Acid Composition in Male C57BL6/J Mice." Journals of Gerontology: Series A, October 27, 2020. http://dx.doi.org/10.1093/gerona/glaa270.

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Abstract Diet can affect health and longevity by altering the gut microbiome profile. Sulfur amino acid restriction (SAAR), like caloric restriction, extends lifespan. But, its effect on the gut microbiome profile and functional significance of such effects are understudied. We investigated whether SAAR alters the gut microbiome profile and bile acid composition, an index of microbial metabolism. We also compared these changes with those induced by a 12% low-calorie diet (LCD). Male 21-week-old C57BL6/J mice were fed control (CD; 0.86% methionine), SAAR (0.12% methionine), and LCD diets (0.86%
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26

Purnamasari, Listya, Ali Agus, and Cuk Tri Noviandi. "Effects of Methionine-Cysteine Amino Acid Supplementations in the Aflatoxin B1 Contaminated Diet on Broiler Production Performance." Buletin Peternakan 43, no. 4 (2019). http://dx.doi.org/10.21059/buletinpeternak.v43i4.31150.

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This research aimed to observe the interaction of methionine-cysteine amino acid supplementation to decrease the effect of aflatoxin B1 (AFB1) on diet against production performance of broiler chicken. A number of 240 mixed sex broiler chickens were treated in 9 treatments by factorial design 3 x 3 with methionine-cysteine amino acid (M+C) (75,100, dan 125%) factors and AFB1 levels (0, 200, dan 400 ppb). Variables observed were: Weight gain, feed consumption, and feed conversion ratio (FCR). The results showed that increased AFB1 content in diet from 0 to 400 ppb increased chicken body weight
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27

Melnik, A. V., та N. V. Zaichko. "Гендерні особливості впливу гіпергомоцистеїнемії на метаболізм сірковмісних амінокислот та гідроген сульфіду в печінці". Medical and Clinical Chemistry, № 1 (28 квітня 2017). http://dx.doi.org/10.11603/mcch.2410-681x.2017.v0.i1.7352.

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Introduction. Sulfur amino acid disorders are recognized as metabolic risk factors for cardiovascular pathology. However, the question of the involvement of sulfur amino acids in the formation of the gender-defined pathology of cardiovascular system remains unclear.The aim of the study – research the impact of thiolactone hyperhomocysteinemia (HHC) on blood levels of sulfur-containing metabolites and enzymes activity in metabolism of homocysteine, cysteine and hydrogen sulfide in the liver of rats of both sexes.Methods of the research. Experiments were conducted on 40 white laboratory rats of
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28

Tomasi, Maria Lauda, and Shelly C. Lu. "Methionine Adenosyltransferase 2A Positively Regulates Bcl‐2 Expression in a Ubiquitin‐Conjugating Enzyme 9‐Dependent Manner." FASEB Journal 26, S1 (2012). http://dx.doi.org/10.1096/fasebj.26.1_supplement.145.10.

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29

Stojković, Vanja, María Fernanda Ulate, Fanny Hidalgo-Villeda, et al. "cfr(B), cfr(C), and a New cfr-Like Gene, cfr(E), in Clostridium difficile Strains Recovered across Latin America." Antimicrobial Agents and Chemotherapy 64, no. 1 (2019). http://dx.doi.org/10.1128/aac.01074-19.

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ABSTRACT Cfr is a radical S-adenosyl-l-methionine (SAM) enzyme that confers cross-resistance to antibiotics targeting the 23S rRNA through hypermethylation of nucleotide A2503. Three cfr-like genes implicated in antibiotic resistance have been described, two of which, cfr(B) and cfr(C), have been sporadically detected in Clostridium difficile. However, the methylase activity of Cfr(C) has not been confirmed. We found cfr(B), cfr(C), and a cfr-like gene that shows only 51 to 58% protein sequence identity to Cfr and Cfr-like enzymes in clinical C. difficile isolates recovered across nearly a dec
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30

Hepowit, Nathaniel L., and Julie A. Maupin-Furlow. "Rhodanese-Like Domain Protein UbaC and Its Role in Ubiquitin-Like Protein Modification and Sulfur Mobilization in Archaea." Journal of Bacteriology 201, no. 15 (2019). http://dx.doi.org/10.1128/jb.00254-19.

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ABSTRACT Ubiquitin-like protein (Ubl) modification targets proteins for transient inactivation and/or proteasome-mediated degradation in archaea. Here the rhodanese-like domain (RHD) protein UbaC (HVO_1947) was found to copurify with the E1-like enzyme (UbaA) of the Ubl modification machinery in the archaeon Haloferax volcanii. UbaC was shown to be important for Ubl ligation, particularly for the attachment of the Ubl SAMP2/3s to protein targets after exposure to oxidants (NaOCl, dimethyl sulfoxide [DMSO], and methionine sulfoxide [MetO]) and the proteasome inhibitor bortezomib. While UbaC was
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