5J67

Structure of Astrotactin-2, a conserved vertebrate-specific and perforin-like membrane protein involved in neuronal development

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
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)
A	SCOP2B Superfamily	MAC/CDC-like	8052036	3002081	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Fibronectin type III	8052092	3002063	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	EGF/Laminin-like	8052090	3000412	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Annexin	8052096	3000627	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Fibronectin type III	8052092	3002063	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Annexin	8052096	3000627	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	MAC/CDC-like	8052036	3002081	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	EGF/Laminin-like	8052090	3000412	SCOP2B (2022-06-29)
C	SCOP2 Family	ASTN-2 EGF-like domain	8052089	4007581	SCOP2 (2022-06-29)
C	SCOP2 Family	ASTN-2 fibronectin type III domain	8052091	4007582	SCOP2 (2022-06-29)
C	SCOP2 Family	MACPF-like	8049570	4006548	SCOP2 (2022-06-29)
C	SCOP2 Family	ASTN-2 annexin-like domain	8052094	4007583	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	EGF/Laminin-like	8052090	3000412	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Fibronectin type III	8052092	3002063	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	MAC/CDC-like	8052036	3002081	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Annexin	8052096	3000627	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	EGF/Laminin-like	8052090	3000412	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Fibronectin type III	8052092	3002063	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Annexin	8052096	3000627	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	MAC/CDC-like	8052036	3002081	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)
A	PF18577	e5j67A2	A: beta meanders	X: C-terminal beta-hairpin in astrotactin-2 (From Topology)	H: C-terminal beta-hairpin in astrotactin-2 (From Topology)	T: C-terminal beta-hairpin in astrotactin-2	F: PF18577	ECOD (1.6)
A	PF19743	e5j67A3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF19743	ECOD (1.6)
A	PF01823	e5j67A4	A: beta complex topology	X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	H: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	T: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains	F: PF01823	ECOD (1.6)
A	PF18411	e5j67A5	A: alpha arrays	X: Annexin (From Topology)	H: Annexin (From Topology)	T: Annexin	F: PF18411	ECOD (1.6)
A	F_UNCLASSIFIED	e5j67A1	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF18577	e5j67B5	A: beta meanders	X: C-terminal beta-hairpin in astrotactin-2 (From Topology)	H: C-terminal beta-hairpin in astrotactin-2 (From Topology)	T: C-terminal beta-hairpin in astrotactin-2	F: PF18577	ECOD (1.6)
B	PF19743	e5j67B1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF19743	ECOD (1.6)
B	PF01823	e5j67B3	A: beta complex topology	X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	H: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	T: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains	F: PF01823	ECOD (1.6)
B	PF18411	e5j67B4	A: alpha arrays	X: Annexin (From Topology)	H: Annexin (From Topology)	T: Annexin	F: PF18411	ECOD (1.6)
B	F_UNCLASSIFIED	e5j67B2	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: F_UNCLASSIFIED	ECOD (1.6)
C	PF18577	e5j67C5	A: beta meanders	X: C-terminal beta-hairpin in astrotactin-2 (From Topology)	H: C-terminal beta-hairpin in astrotactin-2 (From Topology)	T: C-terminal beta-hairpin in astrotactin-2	F: PF18577	ECOD (1.6)
C	PF19743	e5j67C3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF19743	ECOD (1.6)
C	PF01823	e5j67C1	A: beta complex topology	X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	H: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	T: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains	F: PF01823	ECOD (1.6)
C	PF18411	e5j67C4	A: alpha arrays	X: Annexin (From Topology)	H: Annexin (From Topology)	T: Annexin	F: PF18411	ECOD (1.6)
C	F_UNCLASSIFIED	e5j67C2	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: F_UNCLASSIFIED	ECOD (1.6)
D	PF18577	e5j67D2	A: beta meanders	X: C-terminal beta-hairpin in astrotactin-2 (From Topology)	H: C-terminal beta-hairpin in astrotactin-2 (From Topology)	T: C-terminal beta-hairpin in astrotactin-2	F: PF18577	ECOD (1.6)
D	PF19743	e5j67D1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF19743	ECOD (1.6)
D	PF01823	e5j67D5	A: beta complex topology	X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	H: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains (From Topology)	T: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains	F: PF01823	ECOD (1.6)
D	PF18411	e5j67D3	A: alpha arrays	X: Annexin (From Topology)	H: Annexin (From Topology)	T: Annexin	F: PF18411	ECOD (1.6)
D	F_UNCLASSIFIED	e5j67D4	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: F_UNCLASSIFIED	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF01823	MAC/Perforin domain (MACPF)	MAC/Perforin domain	The membrane-attack complex (MAC) of the complement system forms transmembrane channels. These channels disrupt the phospholipid bilayer of target cells, leading to cell lysis and death. A number of proteins participate in the assembly of the MAC. Fr ...	The membrane-attack complex (MAC) of the complement system forms transmembrane channels. These channels disrupt the phospholipid bilayer of target cells, leading to cell lysis and death. A number of proteins participate in the assembly of the MAC. Freshly activated C5b binds to C6 to form a C5b-6 complex, then to C7 forming the C5b-7 complex. The C5b-7 complex binds to C8, which is composed of three chains (alpha, beta, and gamma), thus forming the C5b-8 complex. C5b-8 subsequently binds to C9 and acts as a catalyst in the polymerisation of C9. Active MAC has a subunit composition of C5b-C6-C7-C8-C9{n}. Perforin is a protein found in cytolytic T-cell and killer cells. In the presence of calcium, perforin polymerises into transmembrane tubules and is capable of lysing, non-specifically, a variety of target cells. There are a number of regions of similarity in the sequences of complement components C6, C7, C8-alpha, C8-beta, C9 and perforin. The X-ray crystal structure of a MACPF domain reveals that it shares a common fold with bacterial cholesterol dependent cytolysins (Pfam:PF01289) such as perfringolysin O. Three key pieces of evidence suggests that MACPF domains and CDCs are homologous: Functional similarity (pore formation), conservation of three glycine residues at a hinge in both families and conservation of a complex core fold [1].	Domain
A, B, C, D	PF18411	Annexin-like domain (Annexin_2)	Annexin-like domain	This annexin-like domain can be found in astrotactin 2 (Astn-2), an integral membrane perforin-like protein linked to the planar cell polarity pathway in hair cells. The annexin-like domain is closest in fold to repeat three of human annexin V and si ...	This annexin-like domain can be found in astrotactin 2 (Astn-2), an integral membrane perforin-like protein linked to the planar cell polarity pathway in hair cells. The annexin-like domain is closest in fold to repeat three of human annexin V and similarly binds calcium, yet shares no sequence homology with it. Notably, this ASTN-2 annexin-like domain is closer in structure to human annexin repeat 3 than human annexin repeat 3 is to repeat 1. Annexin-like domains are known for their capacity to remodel membranes, triggered by calcium binding, and have also been suggested to be involved in the formation of pores in membranes both are possible biological roles of the ASTN-2 annexin-like domain [1].	Domain
A, B, C, D	PF18577	Astrotactin-2 C-terminal beta-hairpin domain (ASTN_2_hairpin)	Astrotactin-2 C-terminal beta-hairpin domain	This is a beta-hairpin domain found at the C-terminal region of astrotactin 2 proteins (ASTN-2). ASTN-2 is an integral membrane perforin-like protein linked to the planar cell polarity pathway in hair cells. it consists of multiple polypeptide folds: ...	This is a beta-hairpin domain found at the C-terminal region of astrotactin 2 proteins (ASTN-2). ASTN-2 is an integral membrane perforin-like protein linked to the planar cell polarity pathway in hair cells. it consists of multiple polypeptide folds: a perforin-like domain, a minimal epidermal growth factor-like module, a fibronectin type III domain Fn (III) and an annexin-like domain as well as the beta hairpin domain which packs across the fibronectin domain [1].	Domain
A, B, C, D	PF19743	ASTN1/2 Fn3 domain (ASTN1_2_fn3)	ASTN1/2 Fn3 domain	Astrotactin-1 and 2 (ASTN1/2) are integral membrane proteins with a large C-terminal domain, extracellular for ASTN1 and endosome luminal for ASTN-2 [1,2]. They play critical roles in neurodevelopment, and ASTN-2 is also involved in the planar cell p ...	Astrotactin-1 and 2 (ASTN1/2) are integral membrane proteins with a large C-terminal domain, extracellular for ASTN1 and endosome luminal for ASTN-2 [1,2]. They play critical roles in neurodevelopment, and ASTN-2 is also involved in the planar cell polarity pathway in hair cells. This is a domain found in the middle of the C-terminal of ASTN-1 and 2, which comprises a fibronectin type III (Fn(III)) domain [1]. This domain located between the MACPF and annexin domains. The structure of Fn(III) from ASTN2 revealed an unexpected feature which has two additional beta strands folded across the core. The junction between EGF-4 and Fn(III) domains in ASTN2 (but not in ASTN1) is thought to be an inositol triphosphate binding site [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Astrotactin-2	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding alcohol binding anion binding inositol 1,3,4,5 tetrakisphosphate binding	protein localization regulation of localization cellular localization regulation of biological process regulation of cellular process regulation of protein localization biological regulation negative regulation of biological process localization negative regulation of protein localization to cell surface protein localization to cell surface regulation of cellular localization cellular macromolecule localization macromolecule localization negative regulation of cellular process protein localization regulation of localization cellular localization regulation of biological process regulation of cellular process regulation of protein localization biological regulation negative regulation of biological process localization negative regulation of protein localization to cell surface protein localization to cell surface regulation of cellular localization cellular macromolecule localization macromolecule localization negative regulation of cellular process regulation of protein localization to cell surface cellular process negative regulation of protein localization cell adhesion cell-cell adhesion neuron cell-cell adhesion developmental process establishment of planar polarity epithelium development morphogenesis of an epithelium tissue development establishment of body hair or bristle planar orientation anatomical structure morphogenesis tissue morphogenesis establishment of tissue polarity morphogenesis of a polarized epithelium establishment of body hair planar orientation anatomical structure development establishment of protein localization nitrogen compound transport transport organic substance transport establishment of localization protein transport multicellular organismal process neuron migration cellular developmental process nervous system development generation of neurons neurogenesis multicellular organism development cell differentiation cell migration cell motility system development	membrane-bounded organelle intracellular anatomical structure early endosome endosome intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle somatodendritic compartment membrane-bounded organelle intracellular anatomical structure early endosome endosome intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle somatodendritic compartment cell body perikaryon neuronal cell body membrane cell periphery cell cortex cell pole clathrin-coated vesicle coated vesicle late endosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR020864	Membrane attack complex component/perforin (MACPF) domain	Domain
A, B, C, D	IPR045575	Astrotactin-1/2, N-terminal	Domain
A, B, C, D	IPR040510	Astrotactin-2, C-terminal beta-hairpin domain	Domain
A, B, C, D	IPR045574	Astrotactin-1/2, Fn3 domain	Domain
A, B, C, D	IPR026995	Astrotactin	Family
A, B, C, D	IPR040685	Annexin-like domain	Domain
A, B, C, D	IPR036116	Fibronectin type III superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: O75129	amphetamine abuse migraine without aura, susceptibility to, 4 osteoarthritis bipolar disorder medulloblastoma multiple sclerosis osteoarthritis, hip psoriasis astrocytic tumor autism Bardet-Biedl syndrome 1 chronic obstructive pulmonary disease liver disease malignant ependymoma migraine disorder amphetamine abuse migraine without aura, susceptibility to, 4 osteoarthritis bipolar disorder medulloblastoma multiple sclerosis osteoarthritis, hip psoriasis astrocytic tumor autism Bardet-Biedl syndrome 1 chronic obstructive pulmonary disease liver disease malignant ependymoma migraine disorder oligodendroglioma pituitary cancer schizophrenia Amphetamine Addiction atrial fibrillation Bardet-Biedl syndrome 11 endogenous depression lung cancer primitive neuroectodermal tumor Sjogren syndrome atypical teratoid rhabdoid tumor autosomal recessive limb-girdle muscular dystrophy type 2H interstitial cystitis lung carcinoma