murG

UDP-N-acetylglucosamine-N-acetylmuramyl-(pentapeptide)pyrophosphoryl-undecaprenol N-acetylglucosamine transferase, conversion of lipid I to lipid II

locus: BSU_15220

pI: 9.57

mw: 39.82 kDa

protein length: 363 aa

gene length: 1092 bp

function: peptidoglycan precursor biosynthesis

product: UDP-N-acetylglucosamine-N-acetylmuramyl-(pentapeptide)pyrophosphoryl-undecaprenol N-acetylglucosamine transferase

essential: yes

ec: 2.4.1.227

synonyms

Genomic Context

categories

• [category|SW 1|Cellular processes] → [category|SW 1.1|Cell envelope and cell division] → [category|SW 1.1.1|Cell wall synthesis] → [category|SW 1.1.1.1|Biosynthesis of peptidoglycan]
• [category|SW 2|Metabolism] → [category|SW 2.6|Additional metabolic pathways] → [category|SW 2.6.1|Biosynthesis of cell wall components] → [category|SW 2.6.1.1|Biosynthesis of peptidoglycan]
• [category|SW 4|Lifestyles] → [category|SW 4.2|Sporulation] → [category|SW 4.2.1|Sporulation proteins] → [category|SW 4.2.1.4|Sporulation proteins/ other]
• [category|SW 6|Groups of genes] → [category|SW 6.1|Essential genes]
• [category|SW 6|Groups of genes] → [category|SW 6.2|Membrane proteins]

Gene

Coordinates: 1,591,540 → 1,592,631

Phenotypes of a mutant

• essential [Pubmed|12682299]

The protein

Catalyzed reaction/ biological activity

• converts lipid I to lipid II by attaching GlcNAc to the bactoprenol carrier-conjugated UDP-N-acetylmuramic acid (UDP-MurNAc) pentapeptide molecule
• Mur2Ac(oyl-L-Ala-γ-D-Glu-L-Lys-D-Ala-D-Ala)-diphospho-di-trans,octa-cis-undecaprenol + UDP-N-acetyl-α-D-glucosamine --> β-D-GlcNAc-(1→4)-Mur2Ac(oyl-L-Ala-γ-D-Glu-L-Lys-D-Ala-D-Ala)-diphospho-di-trans,octa-cis-undecaprenol + H⁺ + UDP (according to UniProt)

Protein family

• glycosyltransferase 28 family (with [protein|7A606B8E952AE8CA4F9A62008BA4B156725BB5B5|UgtP] and [protein|25CECB2D3C7925408DB96A156745BAD6A6FAB0AC|YkoN], according to UniProt)

Structure

• [PDB|1F0K] (from ''Escherichia coli'', 30% identity, 52% similarity) [Pubmed|10892798]

[SW|Localization]

• peripheral membrane protein [Pubmed|24706874]
• in the presence of daptomycin, MurG delocalizes from the membrane to the cytoplasm [Pubmed|27791134]
• forms banded patterns along the length of the cell, this pattern formation depends on [protein|A4C8719E06F774A6EB4D79757CC79CF89E453A54|MreB] [Pubmed|17880425]

Expression and Regulation

Operons

• genes: [gene|D52FDB5015B10E9B26D7FED5708457890C6EA43D|murG]-[gene|5E11616A51EE2CD1B8D3E33B18483521C504AD1F|murB]-[gene|B66FC02948DABBCE64DE2629D6E33E05647B4EEF|divIB]-[gene|5CDB49209BDCA86E09D6287DFC16B278D9A71379|ylxW]-[gene|081EA0CBCDA7ECDE8D128DD091C132BB194D19EB|ylxX]-[gene|1C6CADD1808CA84CBC19D623DACF4D398EB43174|sbp]
  description: [Pubmed|18179421]

  sigma factors

  • [protein|081DF3EE9FA56209D648C7677188C61CE3AA8E41|SigM]: sigma factor, (promoter within [protein|D52FDB5015B10E9B26D7FED5708457890C6EA43D|MurG]) [Pubmed|18179421], in [regulon|081DF3EE9FA56209D648C7677188C61CE3AA8E41|SigM regulon]
  • [protein|360F48D576DE950DF79C1A2677B7A35A8D8CC30C|SigA]: sigma factor, [Pubmed|8106328], in [regulon|360F48D576DE950DF79C1A2677B7A35A8D8CC30C|SigA regulon]
  • [protein|3CB24D493B3282278B7DC61CE3C793DFA815F9E2|SigE]: sigma factor, [Pubmed|8320223], in [regulon|3CB24D493B3282278B7DC61CE3C793DFA815F9E2|SigE regulon]

  regulatory mechanism

  • [protein|90DCE4F286D2C151D8BDBF0E024E6BBEC94E2397|SpoIIID]: repression, [Pubmed|15383836], in [regulon|90DCE4F286D2C151D8BDBF0E024E6BBEC94E2397|SpoIIID regulon]

  regulation

  • expressed during vegatative growth, then switched off, and again expressed during sporulation in the mother cell ([protein|3CB24D493B3282278B7DC61CE3C793DFA815F9E2|SigE]) [Pubmed|1391053]

• genes: [gene|D48B7591467C493D2214D37AEA83643FE8C27BC6|murE]-[gene|4D3D4429E1F387BACB0D5A1084AA8DF179A16685|mraY]-[gene|0A9FF5A66F73464A780914A1424979CE753B3D9C|murD]-[gene|5DE602D97D903D9AE38ED05D5A5F1B3A2DC1D58E|spoVE]-[gene|D52FDB5015B10E9B26D7FED5708457890C6EA43D|murG]-[gene|5E11616A51EE2CD1B8D3E33B18483521C504AD1F|murB]-[gene|B66FC02948DABBCE64DE2629D6E33E05647B4EEF|divIB]-[gene|5CDB49209BDCA86E09D6287DFC16B278D9A71379|ylxW]-[gene|081EA0CBCDA7ECDE8D128DD091C132BB194D19EB|ylxX]-[gene|1C6CADD1808CA84CBC19D623DACF4D398EB43174|sbp]
  description: [Pubmed|1391053]

  sigma factors

  • [protein|3CB24D493B3282278B7DC61CE3C793DFA815F9E2|SigE]: sigma factor, [Pubmed|8320223], in [regulon|3CB24D493B3282278B7DC61CE3C793DFA815F9E2|SigE regulon]

  regulatory mechanism

  • [regulon|stringent response|stringent response]: negative regulation, in [regulon|stringent response|stringent response]
  • [protein|90DCE4F286D2C151D8BDBF0E024E6BBEC94E2397|SpoIIID]: repression, [Pubmed|15383836], in [regulon|90DCE4F286D2C151D8BDBF0E024E6BBEC94E2397|SpoIIID regulon]

  regulation

  • expressed during vegatative growth [Pubmed|1391053]

• genes: [gene|5DE602D97D903D9AE38ED05D5A5F1B3A2DC1D58E|spoVE]-[gene|D52FDB5015B10E9B26D7FED5708457890C6EA43D|murG]-[gene|5E11616A51EE2CD1B8D3E33B18483521C504AD1F|murB]-[gene|B66FC02948DABBCE64DE2629D6E33E05647B4EEF|divIB]-[gene|5CDB49209BDCA86E09D6287DFC16B278D9A71379|ylxW]-[gene|081EA0CBCDA7ECDE8D128DD091C132BB194D19EB|ylxX]-[gene|1C6CADD1808CA84CBC19D623DACF4D398EB43174|sbp]
  description: [Pubmed|1391053]

  regulation

  • expressed during vegatative growth, then switched off, and again expressed during sporulation in the mother cell ([protein|3CB24D493B3282278B7DC61CE3C793DFA815F9E2|SigE]) [Pubmed|1391053]

Biological materials

FLAG-tag construct

• GP2002 ''murG-3xFLAG ermC'' (based on [SW|pGP1087]), available in [SW|Jörg Stülke]'s lab

References

• 22092867,18063720,18081839,1391053,8320223,15383836,18179421,10790316,24706874,26278972,17880425,20233306,27791134