8I79 | pdb_00008i79

Cryo-EM structure of KCTD7 in complex with Cullin3

External Resource: Annotation


Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
B,
D [auth C],
F [auth E],
H,
J		PF00888Cullin alpha solenoid domain (Cullin)Cullin alpha solenoid domain- Repeat
A [auth F],
C [auth A],
E [auth D],
G,
I		PF25611KCTD C-terminal domain (KCTD_C)KCTD C-terminal domainThis entry represents the C-terminal domain found in the KCTD (potassium channel tetramerization domain-containing) family of proteins. The domain has a consistent structural motif with three antiparallel beta sheets packing against one alpha helix. ...This entry represents the C-terminal domain found in the KCTD (potassium channel tetramerization domain-containing) family of proteins. The domain has a consistent structural motif with three antiparallel beta sheets packing against one alpha helix. In KCTD5, KCTD2, and KCTD17, this domain functions as a G protein binding domain (GBD) that interacts with Gbeta/gamma subunits. In combination with the BTB domain and Cullin3, these proteins form a pentameric E3 ubiquitin ligase that triggers ubiquitination and degradation of Gbeta/gamma subunits, regulating G protein-coupled receptor (GPCR) signaling. The domain adopts different interfaces in different KCTD subfamily members, resulting in distinct substrate binding mechanisms. The domain forms part of a pentameric assembly in native KCTD proteins.
Domain
A [auth F],
C [auth A],
E [auth D],
G,
I		PF02214BTB/POZ domain (BTB_2)BTB/POZ domainIn voltage-gated K+ channels this domain is responsible for subfamily-specific assembly of alpha-subunits into functional tetrameric channels [1]. In KCTD1 (Swiss:Q719H9) this domain functions as a transcriptional repressor [2]. It also mediates homo ...In voltage-gated K+ channels this domain is responsible for subfamily-specific assembly of alpha-subunits into functional tetrameric channels [1]. In KCTD1 (Swiss:Q719H9) this domain functions as a transcriptional repressor [2]. It also mediates homomultimerisation of KCTD1 and interaction of KCTD1 with the transcription factor AP-2-alpha [2-3].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
B,
D [auth C],
F [auth E],
H,
J		Cullin-3
A [auth F],
C [auth A],
E [auth D],
G,
I		BTB/POZ domain-containing protein KCTD7-

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
B,
D [auth C],
F [auth E],
H,
J		IPR045093CullinFamily
B,
D [auth C],
F [auth E],
H,
J		IPR016158Cullin homology domainDomain
B,
D [auth C],
F [auth E],
H,
J		IPR001373Cullin, N-terminalDomain
B,
D [auth C],
F [auth E],
H,
J		IPR036388Winged helix-like DNA-binding domain superfamilyHomologous Superfamily
B,
D [auth C],
F [auth E],
H,
J		IPR036390Winged helix DNA-binding domain superfamilyHomologous Superfamily
B,
D [auth C],
F [auth E],
H,
J		IPR016157Cullin, conserved siteConserved Site
B,
D [auth C],
F [auth E],
H,
J		IPR019559Cullin, neddylation domainDomain
B,
D [auth C],
F [auth E],
H,
J		IPR036317Cullin homology domain superfamilyHomologous Superfamily
B,
D [auth C],
F [auth E],
H,
J		IPR016159Cullin repeat-like-containing domain superfamilyHomologous Superfamily
A [auth F],
C [auth A],
E [auth D],
G,
I		IPR003131Potassium channel tetramerisation-type BTB domainDomain
A [auth F],
C [auth A],
E [auth D],
G,
I		IPR000210BTB/POZ domainDomain
A [auth F],
C [auth A],
E [auth D],
G,
I		IPR011333SKP1/BTB/POZ domain superfamilyHomologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
B,
D [auth C],
F [auth E],
H,
J		Pharos:  Q13618