glmS
168
[metabolite|glutamine]-[metabolite|fructose-6-phosphate] transaminase
locus
BSU_01780
Molecular weight
65.16 kDa
pI
4.8
function
cell wall synthesis
product
[metabolite|glutamine]-[metabolite|fructose-6-phosphate] transaminase
essential
yes
ec
2.6.1.16
synonyms
glmS, gcaA, ybxD
Outlinks
Genomic Context
Categories containing this gene/protein
List of homologs in different organisms, belongs to COG0449 (Galperin et al., 2021)
This gene is a member of the following regulons
Gene
Coordinates
200,277 202,079
Phenotypes of a mutant
essential [Pubmed|12682299]
The protein
Catalyzed reaction/ biological activity
D-[metabolite|fructose-6-phosphate] + L-[metabolite|glutamine] --> D-[metabolite|glucosamine-6-phosphate] + L-[metabolite|glutamate] (according to UniProt)
[wiki|Domains]
[wiki|Glutamine amidotransferase type-2 domain] (aa 2-217) (according to UniProt)
[wiki|SIS domain] 1 (aa 283-422) (according to UniProt)
[wiki|SIS domain] 2 (aa 452-590) (according to UniProt)
Structure
[PDB|2VF4] (GlmS from ''E. coli'', 39% identity, 58% similarity) [Pubmed|18295797]
the ribozyme: [PDB|3G8S], [PDB|3G9C], [PDB|3G8T], [PDB|3G95], [PDB|3G96] (all for the ribozyme from ''Bacillus anthracis''), [PDB|2HO7] (the ribozyme from ''Thermonanaerobacter tengcongensis'')
[AF|P0CI73]
Effectors of protein activity
activity is stimulated by interaction with [protein|7150BABA5086D5E2EB8102E4901A216F43576282|glmR] [pubmed|32994436,30248093]
[wiki|Localization]
cytoplasm (according to Swiss-Prot)
Additional information
subject to Clp-dependent proteolysis upon glucose starvation [PubMed|17981983]
Expression and Regulation
Operons
genes
[gene|AFE2A9998219162FE32E95628B3CA9071099B61A|cdaA]-[gene|FB23F2AB0E2A82658009D115E5876E7AF1BDE5FD|cdaR]-[gene|F022ACB2CBB8DA46B392CE1D26474093645F26DA|glmM]-[gene|4E23D2043D51C587027ABBF6335F148295E90B8F|glmS]
description
[Pubmed|23192352]
regulatory mechanism
GlmS ribozyme: RNA switch, in [regulon|other_regulator:GlmS ribozyme|GlmS ribozyme]
sigma factors
[protein|360F48D576DE950DF79C1A2677B7A35A8D8CC30C|sigA]: sigma factor, [Pubmed|22211522], in [regulon|protein:360F48D576DE950DF79C1A2677B7A35A8D8CC30C|sigA regulon]
additional information
''glmS'' is only expressed in the absence of glucosamine 6-phosphate ([wiki|GlmS ribozyme])
glucosamine 6-phosphate binds the leader mRNA, and a [wiki|riboswitch] with [wiki|ribozyme] activity cleaves off the [gene|4E23D2043D51C587027ABBF6335F148295E90B8F|glmS] section from the mRNA, resulting in stopp of transcript elongation
labs
[wiki|Wade Winkler], University of Texas, USA, [http://www.utsouthwestern.edu/findfac/professional/0,,68018,00.html Homepage]
References
Reviews
Original Publications
The ''glmS'' Ribozyme
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Time of last update: 2024-12-26 20:00:19
Author of last update: Jstuelk