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Showing 1 to 20 of 20 for “"tryptophanase"”.
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Tryptophanase Regulatory Mechanisms in Escherichia coli
… of L-tryptophan through the action of the enzyme tryptophanase (TnaA). The *tnaA* gene is part of the tryptophanase (*tna*) operon, which is regulated by catabolite repression and tryptophan-induced transcription antitermination. Recent studies have unveiled two distinct kinetic modes of indole …
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The Purification and Characterization of Tryptophanase
Made available in DSpace on 2014-12-05T21:45:37Z (GMT). No. of bitstreams: 1 6202888.pdf: 3123580 bytes, checksum: 060ee4026f15ccfbf5d77e5cf43d063e (MD5) Previous issue date: 1962
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Studies on Rna Synthesis During Tryptophanase Induction
Made available in DSpace on 2014-12-05T21:45:38Z (GMT). No. of bitstreams: 1 6303246.pdf: 3543824 bytes, checksum: 343c562d2d64b4a27884013fed3933cc (MD5) Previous issue date: 1962
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Specificity and Properties of Tryptophanase From Bacillus Alvei
Made available in DSpace on 2014-12-09T22:04:20Z (GMT). No. of bitstreams: 1 6915357.pdf: 2919080 bytes, checksum: c275ea540bcd1d41ad3e59cfcf3449a4 (MD5) Previous issue date: 1969
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Substrate-Protein Interaction in Tryptophanase Purified From Bacillus Alvei
Made available in DSpace on 2014-12-11T18:16:53Z (GMT). No. of bitstreams: 1 7405565.pdf: 8246734 bytes, checksum: 3f00bf52bb63d089cb1074dddafc0f8d (MD5) Previous issue date: 1973
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Properties of Tryptophanase and Its Active-Site From Sphaerophorus Funduliformis
Made available in DSpace on 2014-12-17T23:15:35Z (GMT). No. of bitstreams: 1 7317146.pdf: 4685498 bytes, checksum: 623893f79f307479f44e8159c276f305 (MD5) Previous issue date: 1972
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The Physiology, Purification, and Properties of Tryptophanase From Bacillus Alvei
Made available in DSpace on 2014-12-09T22:04:12Z (GMT). No. of bitstreams: 1 6604200.pdf: 2373257 bytes, checksum: dc13c9d189a56ce46688a364d006aff2 (MD5) Previous issue date: 1965
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Chemical, Physical and Catalytic Properties of Tryptophanase Purified From Aeromonas Liquefaciens
Made available in DSpace on 2014-12-11T18:16:52Z (GMT). No. of bitstreams: 1 7317166.pdf: 5131557 bytes, checksum: d234db5ea6f0a4e37621fa4afd1e0886 (MD5) Previous issue date: 1972
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THE EFFECT OF STRINGENT CONTROL ON THE PRODUCTION OF ENTEROTOXIN, TRYPTOPHANASE, AND BETA-GALACTOSIDASE BY ESCHERICHIA COLI IN A RECYCLING FERMENTOR
… controlled by ppGpp during phases 2 and 3, while tryptophanase and (beta)-galactosidase were more negatively affected by ppGpp. An enhancing effect by glucose was found on the production of enterotoxin and (beta)-galactosidase. The nicking process of enterotoxin activation appears to be regulated …
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Tryptophanase From Bacillus Alvei: A Study of the Active-Site With Emphasis on the Interaction of the Cofactor With the Apoenzyme
Made available in DSpace on 2014-12-11T18:16:53Z (GMT). No. of bitstreams: 1 7405601.pdf: 9488392 bytes, checksum: 0d4685b66d39e78d39f8fdbf6fb0b1aa (MD5) Previous issue date: 1973
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High level indole signalling in Escherichia coli
… Escherichia coli. It is made by the enzyme tryptophanase, which converts tryptophan into indole, pyruvate and ammonia. Indole has diverse roles in E. coli, including regulation of biofilm formation, acid resistance and pathogenicity. In these cases, E. coli responds to a low, persistent …
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Influence of Indole and Mixed Culture Growth on Pseudomonas Aeruginosa Biofilm Structure
… coli BW25113 (indole producing), and E. coli tryptophanase mutant tnaA (non-indole producing). Comparably, exogenous indole was added in multiple concentrations (mM) in an effort to monitor the response of the P. aeruginosa strains. P. aeruginosa pqs mutant strains where also studied to see if …
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Characterization of pigment production by Escherichia Coli containing a cloned Rhodococcus gene
… the conversion of tryptophan to indole by tryptophanase of E. coli and then to the pigment by the action of the cloned Rhodococcus gene. The solubility properties of the pigment, TLC analysis and NMR and visible spectrophotometry supported the hypothesis that the blue pigment was indigo and …
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REGULATORY PROCESSES IN ULTRA SLOW GROWING MICROORGANISMS (ESCHERICHIA COLI, BACILLUS POLYMYXA)
… of the inducible enzymes, B-galactosidase and tryptophanase. The activity of this system in phase 3 cells is interpretable as signifying the presence of a chromosome replicating fork on only 38% of the population.</p>
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Mathematical and experimental approaches to the dimer catastrophe theory
… from the cer site in dimers and interacts with tryptophanase to increase the concentration of indole in the cell. It is proposed that, as indole inhibits cell division, Rcd imposes a checkpoint on the cell until plasmid dimers are resolved. In this work, plasmid behaviour in a growing cell …
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Microbial pathways of sulfur metabolism and colorectal cancer risk
… H2S. A genome search revealed a bifunctional tryptophanase/cysteine desulfhydrase (tnaA). The gene tnaA from O. splanchnicus was amplified by PCR, ligated into the expression vector pET-28a, transformed into Eschericia coli strain BL21, and overexpressed at 16°C for 16 hours. Functional …
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Ionic Control of Porin Permeability
… mainly controlled by modulating the synthesis of tryptophanase, which is responsible for indole production. I show that indole production modulates the membrane potential, suggesting a potential role in regulating porin permeability and other bacterial processes. The work presented here …
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Influence of intestinal inflammation on bacterial protein expression in monoassociated mice
… the Fe-S cluster repair protein NfuA, the tryptophanase TnaA, and the uncharacterised protein YggE. NfuA was upregulated nearly 3-fold in both E. coli strains after DSS administration. Reactive oxygen species produced during intestinal inflammation damage Fe-S clusters and thereby lead to …
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The effects of low-shear modeled microgravity on Streptococcus pneumoniae and adherent-invasive Escherichia coli
The effects of low-shear modeled microgravity (LSMMG) were investigated on Streptococcus pneumoniae global gene expression and on adherent-invasive Escherichia coli (AIEC) physiology and colonization properties. Habitation in space exposes both humans and microbes to microgravity conditions which …