1X5M

Solution structure of the core domain of calcyclin binding protein; siah-interacting protein (SIP)


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyCS domain8046632 4000815 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyHsp20 chaperone-like8102961 3001242 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ACSe1x5mA1 A: beta sandwichesX: HSP20-likeH: HSP20-like chaperones (From Topology)T: HSP20-like chaperonesF: CSECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A2.60.40.790 Mainly Beta Sandwich Immunoglobulin-like CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF04969CS domain (CS)CS domainThe CS and CHORD (Pfam:PF04968) are fused into a single polypeptide chain in metazoans but are found in separate proteins in plants; this is thought to be indicative of an interaction between CS and CHORD [1]. It has been suggested that the CS domain ...The CS and CHORD (Pfam:PF04968) are fused into a single polypeptide chain in metazoans but are found in separate proteins in plants; this is thought to be indicative of an interaction between CS and CHORD [1]. It has been suggested that the CS domain is a binding module for HSP90, implying that CS domain-containing proteins are involved in recruiting heat shock proteins to multiprotein assemblies [2]. Two CS domains are found at the N-terminus of Ubiquitin carboxyl-terminal hydrolase 19 (USP19) (Swiss:O94966), these domains may play a role in the interaction of USP19 with cellular inhibitor of apoptosis 2 [3].
Domain
PF09032Siah interacting protein, N terminal (Siah-Interact_N)Siah interacting protein, N terminalThe N terminal domain of Siah interacting protein (SIP) adopts a helical hairpin structure with a hydrophobic core stabilised by a classic knobs-and-holes arrangement of side chains contributed by the two amphipathic helices. Little is known about th ...The N terminal domain of Siah interacting protein (SIP) adopts a helical hairpin structure with a hydrophobic core stabilised by a classic knobs-and-holes arrangement of side chains contributed by the two amphipathic helices. Little is known about this domain's function, except that it is crucial for interactions with Siah. It has also been hypothesised that SIP can dimerise through this N terminal domain [1].
Domain
PF05002SGS domain (SGS)SGS domainThis domain was thought to be unique to the SGT1-like proteins [1], but is also found in calcyclin binding proteins.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Calcyclin-binding protein