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trigger enzyme, glutamate dehydrogenase and effector protein for [protein|87BCAE725B02860156D50E1783F6DB68510C811E|GltC]
46.48 kDa
protein length
424 aa Sequence Blast
gene length
1275 bp Sequence Blast
arginine utilization, controls the activity of [protein|87BCAE725B02860156D50E1783F6DB68510C811E|GltC]
glutamate dehydrogenase

Genomic Context



  • [category|SW 2|Metabolism] → [category|SW 2.3|Amino acid/ nitrogen metabolism] → [category|SW 2.3.2|Utilization of amino acids] → [category|SW|Utilization of glutamine/ glutamate]
  • [category|SW 2|Metabolism] → [category|SW 2.3|Amino acid/ nitrogen metabolism] → [category|SW 2.3.2|Utilization of amino acids] → [category|SW|Utilization of arginine/ ornithine]
  • [category|SW 3|Information processing] → [category|SW 3.4|Regulation of gene expression] → [category|SW 3.4.2|Transcription factors and their control] → [category|SW|Control of transcription factor (other than two-component system)]
  • [category|SW 3|Information processing] → [category|SW 3.4|Regulation of gene expression] → [category|SW 3.4.3|Trigger enzyme] → [category|SW|Trigger enzymes that control gene expression by protein-protein interaction with transcription factors]
  • Gene

    3,880,740 3,882,014

    Phenotypes of a mutant

  • Poor growth on complex media such as SP (sporulation medium). No growth in minimal media with arginine as the only carbon source. Rapid accumulation of suppressor mutants ([gene|C36C8C9EEDCAD392D9BEC9728A1E0CBFF2F4E790|''gudB1'']]])
  • sensitive to -lactam antibiotics such as cefuroxime and to fosfomycin (suppressed by activation of ''[gene|C36C8C9EEDCAD392D9BEC9728A1E0CBFF2F4E790|gudB]'') due to the downregulation of the [SW|SigW regulon] [Pubmed|22178969]
  • transcription profile of a ''[gene|56CBEBCFEF5CFB4A0175498338C7AF2F45EAA3E3|rocG] [gene|C36C8C9EEDCAD392D9BEC9728A1E0CBFF2F4E790|gudB]'' mutant strain: [ GEO] [Pubmed|22178969]
  • The protein

    Catalyzed reaction/ biological activity

  • H2O + L-glutamate + NAD+ --> 2-oxoglutarate + H+ + NADH + NH4+ (according to UniProt)
  • controls the activity of the [protein|87BCAE725B02860156D50E1783F6DB68510C811E|GltC] transcription activator [Pubmed|17608797]
  • Protein family

  • Glu/Leu/Phe/Val dehydrogenases family (with [protein|A52E50104B18D0A8518218C52D9CC36FDDB29AAF|Bcd] and [protein|C36C8C9EEDCAD392D9BEC9728A1E0CBFF2F4E790|GudB], according to UniProt)
  • Paralogous protein(s)

  • [protein|C36C8C9EEDCAD392D9BEC9728A1E0CBFF2F4E790|GudB]
  • Kinetic information

  • KM [glutamate] = 2.9 mM, KM [ammonium] = 18 mM [Pubmed|20630473]
  • [SW|Cofactors]

  • NAD+/NADH + H+
  • Structure

  • [PDB|3K92] (super-repressor mutant that is capable of constitutive inactivation of [protein|87BCAE725B02860156D50E1783F6DB68510C811E|GltC], E93K mutation) [Pubmed|20630473]
  • Expression and Regulation



    sigma factors

  • [protein|1118A21CC581B0470EC6E7C178F2523CDCA70F93|SigL]: sigma factor, [Pubmed|10468601], in [regulon|1118A21CC581B0470EC6E7C178F2523CDCA70F93|SigL regulon]
  • regulatory mechanism

  • [protein|BEE6F16D6A5BBC7FED9E8EB5FA6A94BBF932BBDA|RocR]: activation, [Pubmed|10468601,12634342], in [regulon|BEE6F16D6A5BBC7FED9E8EB5FA6A94BBF932BBDA|RocR regulon]
  • [protein|62F8E0D6BC9DA6390256FA8FB684EA5C9C722AE4|AhrC]: activation, [Pubmed|17183217], in [regulon|62F8E0D6BC9DA6390256FA8FB684EA5C9C722AE4|AhrC regulon]
  • [protein|E39AFEB7B7F28969A35C4B51CC6E7819F71C79D9|CcpA]: repression, [Pubmed|15150224], in [regulon|E39AFEB7B7F28969A35C4B51CC6E7819F71C79D9|CcpA regulon]
  • [protein|E5110D9C36E8C55AFD1419987B14A53232165F20|AbrB]: repression, [Pubmed|20817675], in [regulon|E5110D9C36E8C55AFD1419987B14A53232165F20|AbrB regulon]
  • regulation

  • expression during spore [SW|germination] is strongly reduced under conditions of osmotic stress [Pubmed|27766092]
  • additional information

  • Activation by [protein|search|RocR] requires binding of [protein|search|RocR] to a downstream element [PubMed|12634342]
  • view in new tab

    Biological materials


  • GP747 (spc), GP726 (aphA3), GP810 (del tet), GP1157 (cat) all available in [SW|Jörg Stülke]'s lab
  • BKE37790 ([gene|56CBEBCFEF5CFB4A0175498338C7AF2F45EAA3E3|rocG]::erm trpC2) available at [ BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATCTTTTTCACCTCATTGT, downstream forward: _UP4_TAATTTGAGAAGCCTCCGCA
  • BKK37790 ([gene|56CBEBCFEF5CFB4A0175498338C7AF2F45EAA3E3|rocG]::kan trpC2) available at [ BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATCTTTTTCACCTCATTGT, downstream forward: _UP4_TAATTTGAGAAGCCTCCGCA
  • Expression vectors

  • expression of native ''rocG'' in ''B. subtilis'': pGP529 (in [SW|pBQ200]), available in [SW|Jörg Stülke]'s lab [Pubmed|18326565]
  • for purification of RocG from ''E. coli'' carrying an N-terminal Strep-tag: pGP902 (in [SW|pGP172]), a series of ''rocG'' variants is also available in [SW|pGP172], available in [SW|Jörg Stülke]'s lab
  • for expression/ purification from ''E. coli'' with N-terminal His-tag and thrombin cleavage site, in [SW|pWH844]: pGP860, available in [SW|Jörg Stülke]'s lab
  • purification from ''B. subtilis'' with an N-terminal Strep-tag, for [SW|SPINE], (in [SW|pGP380]): pGP1709, available in [SW|Jörg Stülke]'s lab
  • two-hybrid system

  • ''B. pertussis'' adenylate cyclase-based bacterial two hybrid system ([SW|BACTH]), available in [SW|Jörg Stülke]'s lab
  • Antibody

  • available in [SW|Jörg Stülke]'s lab [Pubmed|17183217]
  • labs

  • [SW|Linc Sonenshein], Tufts University, Boston, MA, USA [ Homepage]
  • [SW|Jörg Stülke], University of Göttingen, Germany [ Homepage]
  • [SW|Fabian Commichau] Brandenburg Technical University Cottbus-Senftenberg, Germany [ Homepage]
  • References


  • 19698086,8299344,7705101,19895831,22625175,28615289
  • Enzymatic activity of RocG

  • 18603778,16244435,16195607,18326565,9829940,20630473,21965396,25711804,28468957
  • Function in the control of [protein|87BCAE725B02860156D50E1783F6DB68510C811E|GltC] activity

  • 15150225,17994626,17608797,17183217,20630473,31649652
  • Expression of [gene|56CBEBCFEF5CFB4A0175498338C7AF2F45EAA3E3|rocG]

  • 12634342,15150224,10468601,9829940,22900538,20817675,25777015,25880922,27766092
  • Structural analysis of glutamate dehydrogenase

  • 8263917,20630473
  • Bypass of [gene|search|rocG ]mutations

  • 21219666,22178973,23785476
  • Additional publications

  • 23338837,23419162,22178969,24473333,29242163