MecA

• Description: buffering protein for development, dampens transitions to spore, biofilm exopolysaccharide and competence expression , targets ComK and ComS to ClpC-ClpP degradation machine (in log Phase), inhibits the transcriptional activity of Spo0A∼P by direct interaction
  
  

Gene name	mecA
Synonyms
Essential	no
Product	adaptor protein
Function	control of ComK degradation, regulation of competence
Gene expression levels in SubtiExpress: mecA
Interactions involving this protein in SubtInteract: MecA
MW, pI	25 kDa, 4.209
Gene length, protein length	654 bp, 218 aa
Immediate neighbours	yjbE, coiA
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

genetic competence, proteolysis

The gene

Basic information

• Locus tag: BSU11520

Database entries

• BsubCyc: BSU11520

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: mecA family (according to Swiss-Prot)

• Paralogous protein(s): YpbH

Extended information on the protein

• Kinetic information:

• Domains:
  • N-terminal domain (1 ... 120): recruitment of protein substrates PubMed
  • C-terminal domain (121 ... 218): facilitates assembly of the ClpC-ClpP oligomer and acts as a degradation tag PubMed

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • MecA-ComK PubMed
  • MecA-ComS PubMed
  • ClpC-MecA PubMed
  • MecA-Spo0A PubMed

• Localization:

Database entries

• BsubCyc: BSU11520

• Structure:
  • 3JTP (C-terminal domain) PubMed
  • 3PXG, 3J3U 3J3U (the MecA-ClpC complex) PubMed

• UniProt: P37958

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: mecA PubMed

• Expression browser: mecA PubMed

• Sigma factor: SigA PubMed

• Regulation:

• Regulatory mechanism:

• Additional information:
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 53 PubMed

Biological materials

• Mutant: GP813 (spc), GP814 (aphA3) both available in the Stülke lab

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Reviews

<pubmed> 23375660 23479438,19609260</pubmed>

Original Publications

<pubmed>11914365,9000055,17560370,19361434, 9890793,2113920,8817496, , 8412687,11918817, 10447896, 12028382, 8016067, 10361283, 11703662 9535081 19767395 19801546 8016066 19202088 8083167 21368759 23595989 16525504,12598648,21435029</pubmed>