Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF12795Mechanosensitive ion channel porin domain (MscS_porin)Mechanosensitive ion channel porin domain- Coiled-coil
PF12794Mechanosensitive ion channel inner membrane domain 1 (MscS_TM)Mechanosensitive ion channel inner membrane domain 1The small mechanosensitive channel, MscS, is a part of the turgor-driven solute efflux system that protects bacteria from lysis in the event of osmotic shock. The MscS protein alone is sufficient to form a functional mechanosensitive channel gated di ...The small mechanosensitive channel, MscS, is a part of the turgor-driven solute efflux system that protects bacteria from lysis in the event of osmotic shock. The MscS protein alone is sufficient to form a functional mechanosensitive channel gated directly by tension in the lipid bilayer. The MscS proteins are heptamers of three transmembrane subunits with seven converging M3 domains, and this domain is one of the inner membrane domains.
Domain
PF00924Mechanosensitive ion channel, beta-domain (MS_channel_2nd)Mechanosensitive ion channel, beta-domainThis entry includes small conductance mechanosensitive channels (MscS), which assembles to a homoheptameric complex [1-6]. Each monomer consists of a N-terminal transmembrane region and a large cytoplasmic segment composed of a five-stranded antipara ...This entry includes small conductance mechanosensitive channels (MscS), which assembles to a homoheptameric complex [1-6]. Each monomer consists of a N-terminal transmembrane region and a large cytoplasmic segment composed of a five-stranded antiparallel beta-sheet (middle/second) domain and a C-terminal alpha/beta-domain [4-7]. This is the beta domain which adopts a SH3-like barrel structure.
Domain
PF21088Mechanosensitive ion channel, transmembrane helices 2/3 (MS_channel_1st)Mechanosensitive ion channel, transmembrane helices 2/3This entry includes small conductance mechanosensitive channels (MscS), which assembles to a homoheptameric complex [1-6]. Each monomer consists of a N-terminal transmembrane region and a large cytoplasmic segment composed of a five-stranded antipara ...This entry includes small conductance mechanosensitive channels (MscS), which assembles to a homoheptameric complex [1-6]. Each monomer consists of a N-terminal transmembrane region and a large cytoplasmic segment composed of a five-stranded antiparallel beta-sheet (middle/second) domain and a C-terminal alpha/beta-domain [4-7]. The N-terminal region consists of three membrane spanning helices (TM1, TM2 and TM3), TM2 and TM3 are represented in this entry. In the heptamer, the permeation pathway is formed by the packing of TM3s, flanked by TM1-TM2 helical hairpins [4].
Domain
PF21082Mechanosensitive ion channel MscS, C-terminal (MS_channel_3rd)Mechanosensitive ion channel MscS, C-terminalThis entry includes small conductance mechanosensitive channels (MscS), which assembles to a homoheptameric complex [1-6]. Each monomer consists of a N-terminal transmembrane region and a large cytoplasmic segment composed of a five-stranded antipara ...This entry includes small conductance mechanosensitive channels (MscS), which assembles to a homoheptameric complex [1-6]. Each monomer consists of a N-terminal transmembrane region and a large cytoplasmic segment composed of a five-stranded antiparallel beta-sheet domain (beta-domain, Pfam:PF00924) and a C-terminal alpha/beta-domain [1,2,3]. This is the C-terminal domain of McsS which, together with the middle beta-domain, creates a framework that connects to the cytoplasm through distinct openings [4-6].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Mechanosensitive channel MscK

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR006685Mechanosensitive ion channel MscSDomain
IPR011014Mechanosensitive ion channel MscS, transmembrane-2Homologous Superfamily
IPR011066Mechanosensitive ion channel MscS, C-terminal domain superfamilyHomologous Superfamily
IPR023408Mechanosensitive ion channel MscS, beta-domain superfamilyHomologous Superfamily
IPR049142Mechanosensitive ion channel, transmembrane helices 2/3Domain
IPR010920LSM domain superfamilyHomologous Superfamily
IPR006686Mechanosensitive ion channel MscS, conserved siteConserved Site
IPR025692Mechanosensitive ion channel inner membrane domain 1Domain
IPR023298P-type ATPase, transmembrane domain superfamilyHomologous Superfamily
IPR049278Mechanosensitive ion channel MscS, C-terminal domainDomain
IPR024393Mechanosensitive ion channel MscS, porin domainDomain