About: GlmS glucosamine-6-phosphate activated ribozyme     Goto   Sponge   NotDistinct   Permalink

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The glucosamine-6-phosphate riboswitch ribozyme ( glmS ribozyme) is an RNA structure that resides in the 5' untranslated region (UTR) of the mRNA transcript of the glmS gene. This RNA regulates the glmS gene by responding to concentrations of a specific metabolite, glucosamine-6-phosphate (GlcN6P), in addition to catalyzing a self-cleaving chemical reaction upon activation. This cleavage leads to the degradation of the mRNA that contains the ribozyme, and lowers production of GlcN6P. The glmS gene encodes for an enzyme glutamine-fructose-6-phosphate amidotransferase, which catalyzes the formation of GlcN6P, a compound essential for cell wall biosynthesis, from fructose-6-phosphate and glutamine. Thus, when GlcN6P levels are high, the glmS ribozyme is activated and the mRNA transcript is de

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  • GlmS glucosamine-6-phosphate activated ribozyme (en)
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  • The glucosamine-6-phosphate riboswitch ribozyme ( glmS ribozyme) is an RNA structure that resides in the 5' untranslated region (UTR) of the mRNA transcript of the glmS gene. This RNA regulates the glmS gene by responding to concentrations of a specific metabolite, glucosamine-6-phosphate (GlcN6P), in addition to catalyzing a self-cleaving chemical reaction upon activation. This cleavage leads to the degradation of the mRNA that contains the ribozyme, and lowers production of GlcN6P. The glmS gene encodes for an enzyme glutamine-fructose-6-phosphate amidotransferase, which catalyzes the formation of GlcN6P, a compound essential for cell wall biosynthesis, from fructose-6-phosphate and glutamine. Thus, when GlcN6P levels are high, the glmS ribozyme is activated and the mRNA transcript is de (en)
name
  • glmS glucosamine-6-phosphate activated ribozyme (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/PDB_2ho7_EBI.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/PDB_2nz4_EBI.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/glmS_ribozyme_secondary_structure.jpg
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  • Predicted secondary structure and sequence conservation of glmS (en)
id
  • RF00234 (en)
symbol
  • glmS (en)
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  • The glucosamine-6-phosphate riboswitch ribozyme ( glmS ribozyme) is an RNA structure that resides in the 5' untranslated region (UTR) of the mRNA transcript of the glmS gene. This RNA regulates the glmS gene by responding to concentrations of a specific metabolite, glucosamine-6-phosphate (GlcN6P), in addition to catalyzing a self-cleaving chemical reaction upon activation. This cleavage leads to the degradation of the mRNA that contains the ribozyme, and lowers production of GlcN6P. The glmS gene encodes for an enzyme glutamine-fructose-6-phosphate amidotransferase, which catalyzes the formation of GlcN6P, a compound essential for cell wall biosynthesis, from fructose-6-phosphate and glutamine. Thus, when GlcN6P levels are high, the glmS ribozyme is activated and the mRNA transcript is degraded but in the absence of GlcN6P the gene continues to be translated into glutamine-fructose-6-phosphate amidotransferase and GlcN6P is produced. GlcN6P is a cofactor for this cleavage reaction, as it directly participates as an acid-base catalyst. This RNA is the first riboswitch also found to be a self-cleaving ribozyme and, like many others, was discovered using a bioinformatics approach. (en)
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  • RF00234 (en)
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