cwlT [2018-11-07 16:52:28]

cell wall hydrolase, required for conjugation of ICEBs1, part of the type IV secretion system for DNA transfer , C-terminal domain hydrolyzes bond between D-Glu and m-DAP

locus: BSU04970

pI: 8.63

mw: 36.39 kDa

protein length: 329 aa

gene length: 987 bp

function: conjugative transfer of ICEBs1

product: cell wall hydrolase

synonyms: yddH

Genomic Context

categories

• [category|SW 1|Cellular processes] → [category|SW 1.1|Cell envelope and cell division] → [category|SW 1.1.3|Cell wall degradation/ turnover] → [category|SW 1.1.3.1|Autolysis]
• [category|SW 5|Prophages and mobile genetic elements] → [category|SW 5.2|Mobile genetic elements] → [category|SW 5.2.1|ICEBs1]

Gene

Coordinates: 544,022 → 545,011

The protein

Catalyzed reaction/ biological activity

• hydrolysis of peptidoglycan (linkage between N-acetylmuramic acid and N-acetylglucosamine and bond between D-γ-glutamate and meso-diaminopimelic acid) [Pubmed|18305117]
• degradation of gamma-polyglutamic acid [pubmed|29458655]

Protein family

• nlpC/p60 family (according to Swiss-Prot)

[SW|Domains]

• N-terminal domain is an N-acetylmuramidase that cleaves the linkage between N-acetylmuramic acid and N-acetylglucosamine [Pubmed|18305117]
• C-terminal D,L-endopeptidase domain ([SW|NlpC/P60 domain]) [pubmed|29458655,22139507], cleaves the bond between D-γ-glutamate and meso-diaminopimelic acid [Pubmed|18305117]

Effectors of protein activity

• both enzymatic activities are inhibited by interaction with [protein|0CA55371306D4BD768CFA82027DCB4D581BCCB87|IseA] [pubmed|29458655]

Structure

• [PDB|4FDY] (from Staphylococcus aureus, 42% identity) [pubmed|24051416]

[SW|Localization]

• secreted (with signal peptide) [Pubmed|24532767]
• may be a lipoprotein, but the lipid anchor is not required for function [Pubmed|24532767]

Expression and Regulation

Operons

• genes: [gene|EE2A4068CBD7A2F852E582E2EDA4148381F1CD61|xis]-[gene|2227923C603B290AB276238F789D71584FB07DF3|ydzL]-[gene|34451538F10B4ABCFC8A236C8C905A20D989EBCF|ydcO]-[gene|C042792D9A643DCFF4A851EFECA3CF2C31E1EDAF|ydcP]-[gene|4BCAA5939CB7F0DF23495BC92C9EF0A0149296A0|ydcQ]-[gene|8E179976C35FE09F92A191D00E497ED4BF28F571|nicK]-[gene|886B2132717BA4C72433ABE351C5791C9DE1432A|S172]-[gene|1699CFBF5400CAF43C6DAE8ADCCE5A360B31F2E9|ydcS]-[gene|9D4918852A1856B1CDD72D49AEA75E51A8602BB6|ydcT]-[gene|62CEABA069CA2970F22B7E0C369D540A2A027A8D|yddA]-[gene|A0AFD543582D2FE8B1139CF69B7B1F7FF0F80265|conB]-[gene|F273A8817E66B44D58FC2BCB6576A30D8616B750|conC]-[gene|F1F898D7A9FDF78D2E5E8F3BF605E0F735D0542A|conD]-[gene|D20F724D8C3E8C758A9FADF133CD43F066BD8D48|conE]-[gene|B3A07E2A61151C33B7C65D1BC58B97BFDB76852D|yddF]-[gene|3356A43B83E2D4D66098F17A751F0912C1553398|conG]-[gene|8D9D81E05BAA8697F002BB1B8DBC5ABBA557353F|cwlT]-[gene|2E4FF80C857B3F40BA835814EC40D6562721AEFE|yddI]-[gene|2FB1C9435AE924F8E450AFA81F800196A871F2D0|yddJ]
  description: [pubmed|22383849]

  regulatory mechanism

  • [protein|DD1C8F3A4809785BD6A6047D39B42AB2C605E161|ImmR]: repression, [Pubmed|17511812], in [regulon|DD1C8F3A4809785BD6A6047D39B42AB2C605E161|ImmR regulon]

  regulation

  • strongly induced in the presence of salt (1.2 M NaCl) [pubmed|32419322]

Biological materials

Mutant

• BKE04970 (Δ[gene|8D9D81E05BAA8697F002BB1B8DBC5ABBA557353F|cwlT]::erm trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKE04970 BGSC], [Pubmed|28189581], upstream reverse: _UP1_TATCATCTTGTTCTTTCATC, downstream forward: _UP4_ATTAAATAACTAGGAGTGAA
• BKK04970 (Δ[gene|8D9D81E05BAA8697F002BB1B8DBC5ABBA557353F|cwlT]::kan trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKK04970 BGSC], [Pubmed|28189581], upstream reverse: _UP1_TATCATCTTGTTCTTTCATC, downstream forward: _UP4_ATTAAATAACTAGGAGTGAA

References

• 18305117,24532767,24051416,29458655