8IXN | pdb_00008ixn

Curved structure of mPIEZO1-S2472E

External Resource: Annotation


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
A [auth C]SCOP2B SuperfamilyPiezo channel C-terminal extracellular domain-like 8054044 3002270 SCOP2B (2022-06-29)
B [auth A]SCOP2B SuperfamilyPiezo channel C-terminal extracellular domain-like 8054044 3002270 SCOP2B (2022-06-29)
C [auth D]SCOP2B SuperfamilyPiezo channel C-terminal extracellular domain-like 8054044 3002270 SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A [auth C],
B [auth A],
C [auth D]		PF15917Piezo TM25-28 (Piezo_TM25-28)Piezo TM25-28Piezo is a family of proteins that form mechanosensitive non-specific cation channels whose conductance is higher for Li+, intermediate for Na+ and lowest for Li+. Divalent ions except for Mn2+ permeate the channel but more slowly than monovalent ion ...Piezo is a family of proteins that form mechanosensitive non-specific cation channels whose conductance is higher for Li+, intermediate for Na+ and lowest for Li+. Divalent ions except for Mn2+ permeate the channel but more slowly than monovalent ions and can reduce K+ currents [1-4]. These channels have a homotrimeric three-blade propeller-shaped structure that use a cap-motion and plug-and-latch mechanism to gate their ion-conducting pathways [1-4]. Each protomer consists of 38 TM helices (referred to THUs) that form unusual non-planar blades, and an extracellular cap-like structure (Pfam:PF12166). This entry represents TM25-28, found in the central region of these proteins, following Pfam:PF24871 and associated with Pfam:PF12166 at the C-terminal.
Domain
A [auth C],
B [auth A],
C [auth D]		PF12166Piezo non-specific cation channel, cap domain (Piezo_cap)Piezo non-specific cation channel, cap domainThis is an extracellular domain at the C-terminus of Piezo, or FAM38 mechanosensitive non-specific cation channel proteins [1,2]. Piezo is a family of proteins that form mechanosensitive non-specific cation channels whose conductance is higher for Li ...This is an extracellular domain at the C-terminus of Piezo, or FAM38 mechanosensitive non-specific cation channel proteins [1,2]. Piezo is a family of proteins that form mechanosensitive non-specific cation channels whose conductance is higher for Li+, intermediate for Na+ and lowest for Li+. Divalent ions except for Mn2+ permeate the channel but more slowly than monovalent ions and can reduce K+ currents [1-4]. These channels have a homotrimeric three-blade propeller-shaped structure that use a cap-motion and plug-and-latch mechanism to gate their ion-conducting pathways [2-4]. Each protomer consists of 38 TM helices that form unusual non-planar blades, and an extracellular cap-like structure, the latter represented in this entry [2-4,6]. This domain is embedded in the centre of the trimer and may control the transmembrane constriction site suggested to act as a transmembrane gate [6]. This domain adopts a distinctive beta-sandwich fold [2-6].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth C],
B [auth A],
C [auth D]		Piezo-type mechanosensitive ion channel component 1

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A [auth C],
B [auth A],
C [auth D]		IPR056768Piezo, transmembrane helical unitDomain
A [auth C],
B [auth A],
C [auth D]		IPR031334Piezo non-specific cation channel, cap domainDomain
A [auth C],
B [auth A],
C [auth D]		IPR056770Piezo, THU9 and anchor domainDomain
A [auth C],
B [auth A],
C [auth D]		IPR031805Piezo, TM25-28Domain
A [auth C],
B [auth A],
C [auth D]		IPR027272Piezo familyFamily
A [auth C],
B [auth A],
C [auth D]		IPR056769Piezo, TM1-24Domain

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

ChainsExternal LinkComment
PDBTMAnnotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

ChainsResource LinkGroupSubgroupProtein
mpstrucTRANSMEMBRANE PROTEINS: ALPHA-HELICALChannels: MechanosensitivePiezo1 mechanosensitive channel, S2472E mutant, curved structure