Summary: Type II secretion system (T2SS), protein M
Type II secretion system (T2SS), protein M Provide feedback
This family of membrane proteins consists of Type II secretion system protein M sequences from several Gram-negative (diderm) bacteria. The precise function of these proteins is unknown, though in Vibrio cholerae, the T2SM (EpsM) protein interacts with the T2SL (EpsL) protein, and also forms homodimers .
Sandkvist M, Hough LP, Bagdasarian MM, Bagdasarian M; , J Bacteriol 1999;181:3129-3135.: Direct interaction of the EpsL and EpsM proteins of the general secretion apparatus in Vibrio cholerae. PUBMED:10322014 EPMC:10322014
Peabody CR, Chung YJ, Yen MR, Vidal-Ingigliardi D, Pugsley AP, Saier MH Jr;, Microbiology. 2003;149:3051-3072.: Type II protein secretion and its relationship to bacterial type IV pili and archaeal flagella. PUBMED:14600218 EPMC:14600218
Desvaux M, Hebraud M, Talon R, Henderson IR;, Trends Microbiol. 2009;17:139-145.: Secretion and subcellular localizations of bacterial proteins: a semantic awareness issue. PUBMED:19299134 EPMC:19299134
External database links
This tab holds annotation information from the InterPro database.
InterPro entry IPR007690Type II secretion system protein M is a membrane protein involved in the export of proteins in bacteria. It consists of a short cytosolic N-terminal domain, a transmembrane domain, and a C-terminal periplasmic domain. The precise function of this protein is unknown, though in Vibrio cholerae, the EpsM protein interacts with the EpsL protein, and also forms homodimers [PUBMED:10322014],
|Biological process||extracellular transport (GO:0006858)|
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Curation and family details
|Seed source:||Pfam-B_5302 (release 7.5)|
|Author:||Mifsud W, Desvaux M|
|Number in seed:||63|
|Number in full:||1099|
|Average length of the domain:||149.60 aa|
|Average identity of full alignment:||22 %|
|Average coverage of the sequence by the domain:||84.64 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||7|
|Download:||download the raw HMM for this family|
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For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the T2SM domain has been found. There are 2 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.
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