4FQN

Crystal structure of the CCM2 C-terminal Harmonin Homology Domain (HHD)

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	HHD-like	8045752	4004660	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	PAH2 domain-like	8091806	3000467	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	PAH2 domain-like	8091806	3000467	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	PAH2 domain-like	8091806	3000467	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	PAH2 domain-like	8091806	3000467	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	CCM2_C	e4fqnB2	A: alpha bundles	X: PAH2 domain (From Topology)	H: PAH2 domain (From Topology)	T: PAH2 domain	F: CCM2_C	ECOD (1.6)
C	CCM2_C	e4fqnC2	A: alpha bundles	X: PAH2 domain (From Topology)	H: PAH2 domain (From Topology)	T: PAH2 domain	F: CCM2_C	ECOD (1.6)
A	CCM2_C	e4fqnA1	A: alpha bundles	X: PAH2 domain (From Topology)	H: PAH2 domain (From Topology)	T: PAH2 domain	F: CCM2_C	ECOD (1.6)
D	CCM2_C	e4fqnD3	A: alpha bundles	X: PAH2 domain (From Topology)	H: PAH2 domain (From Topology)	T: PAH2 domain	F: CCM2_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.1160.20	Mainly Alpha	Up-down Bundle	Paired amphipathic helix 2 (pah2 repeat)		CATH (4.3.0)
C	1.20.1160.20	Mainly Alpha	Up-down Bundle	Paired amphipathic helix 2 (pah2 repeat)		CATH (4.3.0)
A	1.20.1160.20	Mainly Alpha	Up-down Bundle	Paired amphipathic helix 2 (pah2 repeat)		CATH (4.3.0)
D	1.20.1160.20	Mainly Alpha	Up-down Bundle	Paired amphipathic helix 2 (pah2 repeat)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF16545	Cerebral cavernous malformation protein, harmonin-homology (CCM2_C)	Cerebral cavernous malformation protein, harmonin-homology	CCM2_HHD is a folded-helical region of a family of vertebral proteins, mutations in which cause cerebral cavernous malformations (CCMs). These malformations are congenital vascular anomalies of the central nervous system that can result in haemorrhag ...	CCM2_HHD is a folded-helical region of a family of vertebral proteins, mutations in which cause cerebral cavernous malformations (CCMs). These malformations are congenital vascular anomalies of the central nervous system that can result in haemorrhagic stroke, seizures, recurrent headaches, and focal neurologic deficits [1]. This domain is structurally homologous to the N-terminal domain of harmonin, so it is named the CCM2 harmonin-homology domain or CCM2_HHD [2]. This protein is often called Malcavernin.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Malcavernin	-	developmental process multicellular organismal process regulation of multicellular organismal development regulation of biological process regulation of developmental process blood vessel morphogenesis tube development biological regulation angiogenesis vasculature development regulation of vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis developmental process multicellular organismal process regulation of multicellular organismal development regulation of biological process regulation of developmental process blood vessel morphogenesis tube development biological regulation angiogenesis vasculature development regulation of vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis regulation of angiogenesis anatomical structure development anatomical structure formation involved in morphogenesis regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development heart development animal organ development epithelium development tissue development pericardium development venous blood vessel development venous blood vessel morphogenesis endothelial cell differentiation cellular developmental process endothelium development cell development epithelial cell differentiation endothelial cell development epithelial cell development cell differentiation cellular process vasculogenesis cellular response to stimulus regulation of cellular process response to stimulus signaling intracellular signal transduction cell communication stress-activated MAPK cascade stress-activated protein kinase signaling cascade cellular response to stress response to stress intracellular signaling cassette MAPK cascade signal transduction blood vessel endothelial cell differentiation ear development sensory organ development inner ear development integrin-mediated signaling pathway cell surface receptor signaling pathway multicellular organism growth developmental growth growth morphogenesis of an endothelium endothelial tube morphogenesis morphogenesis of an epithelium tissue morphogenesis epithelial tube morphogenesis cellular component organization cell junction organization cellular component organization or biogenesis cell-cell junction organization embryo development ending in birth or egg hatching chordate embryonic development embryo development in utero embryonic development	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR006020	PTB/PI domain	Domain
A, B, C, D	IPR032375	Cerebral cavernous malformations 2, harmonin-homology domain	Domain
A, B, C, D	IPR026159	Cerebral cavernous malformations 2	Family
A, B, C, D	IPR011993	PH-like domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: Q9BSQ5	cerebral cavernous malformation 2 Hemangioma, Cavernous, Central Nervous System cerebrovascular disorder pancreatic ductal adenocarcinoma atypical teratoid rhabdoid tumor colorectal adenoma heart disease malignant ependymoma pilocytic astrocytoma cerebral cavernous malformation cerebrocostomandibular syndrome colorectal cancer ovarian cancer cavernous hemangioma cerebral cavernous malformation 1 cerebral cavernous malformation 2 Hemangioma, Cavernous, Central Nervous System cerebrovascular disorder pancreatic ductal adenocarcinoma atypical teratoid rhabdoid tumor colorectal adenoma heart disease malignant ependymoma pilocytic astrocytoma cerebral cavernous malformation cerebrocostomandibular syndrome colorectal cancer ovarian cancer cavernous hemangioma cerebral cavernous malformation 1 famililal cerebral cavernous malformations large cell medulloblastoma

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.