GlmS

• Description: glutamine-fructose-6-phosphate transaminase
  
  

Gene name	glmS
Synonyms	gcaA, ybxD
Essential	yes PubMed
Product	glutamine-fructose-6-phosphate transaminase
Function	cell wall synthesis
Gene expression levels in SubtiExpress: glmS
Metabolic function and regulation of this protein in SubtiPathways: glmS
MW, pI	65 kDa, 4.796
Gene length, protein length	1800 bp, 600 aa
Immediate neighbours	glmM, alkA
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

cell wall synthesis, biosynthesis of cell wall components, essential genes

This gene is a member of the following regulons

glmS ribozyme

The gene

Basic information

• Locus tag: BSU01780

Phenotypes of a mutant

essential PubMed

Database entries

• BsubCyc: BSU01780

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: L-glutamine + D-fructose 6-phosphate = L-glutamate + D-glucosamine 6-phosphate (according to Swiss-Prot)

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactors:

• Effectors of protein activity:

• Interactions:

• Localization:
  • cytoplasm (according to Swiss-Prot)

Database entries

• BsubCyc: BSU01780

• Structure: 2VF4 (GlmS from E. coli, 39% identity, 58% similarity) PubMed
  • the ribozyme: 3G8S, 3G9C, 3G8T, 3G95, 3G96 (all for the ribozyme from Bacillus anthracis), 2HO7 (the ribozyme from Thermonanaerobacter tengcongensis)

• UniProt: P39754

• KEGG entry: [2]

• E.C. number: 2.6.1.16

Additional information

• subject to Clp-dependent proteolysis upon glucose starvation PubMed

Expression and regulation

• Operon: cdaA-cdaR-glmM-glmS PubMed

• Expression browser: glmS PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed by glucosamine, N-acetylglucosamine, N-propionylglucosamine or N-formylglucosamine PubMed
  • glmS is only expressed in the absence of glucosamine 6-phosphate (glmS ribozyme)

• Regulatory mechanism: glmS ribozyme: glucosamine 6-phosphate binds the leader mRNA, and a riboswitch with ribozyme activity cleaves off the glmS section from the mRNA, resulting in stopp of transcript elongation

• Additional information:
  • subject to Clp-dependent proteolysis upon glucose starvation PubMed
  • A ncRNA is predicted between glmM and glmS PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 340 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 2741 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Wade Winkler, University of Texas, USA, Homepage

References

The glmS Ribozyme

Christina E Lünse, Günter Mayer
Screening assays to identify artificial glmS ribozyme activators.
Methods Mol Biol: 2014, 1103;199-209
[PubMed:24318896] [WorldCat.org] [DOI] (I p)

Krista M Brooks, Ken J Hampel
Rapid steps in the glmS ribozyme catalytic pathway: cation and ligand requirements.
Biochemistry: 2011, 50(13);2424-33
[PubMed:21395279] [WorldCat.org] [DOI] (I p)

Peter Y Watson, Martha J Fedor
The glmS riboswitch integrates signals from activating and inhibitory metabolites in vivo.
Nat Struct Mol Biol: 2011, 18(3);359-63
[PubMed:21317896] [WorldCat.org] [DOI] (I p)

Jesse C Cochrane, Sarah V Lipchock, Kathryn D Smith, Scott A Strobel
Structural and chemical basis for glucosamine 6-phosphate binding and activation of the glmS ribozyme.
Biochemistry: 2009, 48(15);3239-46
[PubMed:19228039] [WorldCat.org] [DOI] (I p)

Jennifer A Collins, Irnov Irnov, Stephanie Baker, Wade C Winkler
Mechanism of mRNA destabilization by the glmS ribozyme.
Genes Dev: 2007, 21(24);3356-68
[PubMed:18079181] [WorldCat.org] [DOI] (P p)

Rebecca A Tinsley, Jennifer R W Furchak, Nils G Walter
Trans-acting glmS catalytic riboswitch: locked and loaded.
RNA: 2007, 13(4);468-77
[PubMed:17283212] [WorldCat.org] [DOI] (P p)

Kenneth Blount, Izabela Puskarz, Robert Penchovsky, Ronald Breaker
Development and application of a high-throughput assay for glmS riboswitch activators.
RNA Biol: 2006, 3(2);77-81
[PubMed:17114942] [WorldCat.org] [DOI] (I p)

Daniel J Klein, Adrian R Ferré-D'Amaré
Structural basis of glmS ribozyme activation by glucosamine-6-phosphate.
Science: 2006, 313(5794);1752-6
[PubMed:16990543] [WorldCat.org] [DOI] (I p)

Ken J Hampel, Melissa M Tinsley
Evidence for preorganization of the glmS ribozyme ligand binding pocket.
Biochemistry: 2006, 45(25);7861-71
[PubMed:16784238] [WorldCat.org] [DOI] (P p)

Adam Roth, Ali Nahvi, Mark Lee, Inbal Jona, Ronald R Breaker
Characteristics of the glmS ribozyme suggest only structural roles for divalent metal ions.
RNA: 2006, 12(4);607-19
[PubMed:16484375] [WorldCat.org] [DOI] (P p)

Tom J McCarthy, Melissa A Plog, Shennen A Floy, Joshua A Jansen, Juliane K Soukup, Garrett A Soukup
Ligand requirements for glmS ribozyme self-cleavage.
Chem Biol: 2005, 12(11);1221-6
[PubMed:16298301] [WorldCat.org] [DOI] (P p)

Jeffrey E Barrick, Keith A Corbino, Wade C Winkler, Ali Nahvi, Maumita Mandal, Jennifer Collins, Mark Lee, Adam Roth, Narasimhan Sudarsan, Inbal Jona, J Kenneth Wickiser, Ronald R Breaker
New RNA motifs suggest an expanded scope for riboswitches in bacterial genetic control.
Proc Natl Acad Sci U S A: 2004, 101(17);6421-6
[PubMed:15096624] [WorldCat.org] [DOI] (P p)

Wade C Winkler, Ali Nahvi, Adam Roth, Jennifer A Collins, Ronald R Breaker
Control of gene expression by a natural metabolite-responsive ribozyme.
Nature: 2004, 428(6980);281-6
[PubMed:15029187] [WorldCat.org] [DOI] (I p)