Annotations: 4P2A

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4p2ab1	All beta proteins	PDZ domain-like	PDZ domain-like	automated matches	automated matches	Rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B	d4p2ab2	Artifacts	Tags	Tags	Tags	N-terminal Tags	Rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Vps26-like	8044659	4004065	SCOP2 (2021-05-27)
A	SCOP2 Superfamily	Arrestin/Vps26-like	8051910	3002071	SCOP2 (2021-05-27)
A	SCOP2 Superfamily	Arrestin/Vps26-like	8051911	3002071	SCOP2 (2021-05-27)
B	SCOP2B Superfamily	PDZ domain-like	8062276	3000388	SCOP2B (2021-05-27)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF03643	e4p2aA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF03643	ECOD (1.6)
B	PF00595	e4p2aB1	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PF00595	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.640	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.2.0)
B	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.2.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03643	Vacuolar protein sorting-associated protein 26 (Vps26)	Vacuolar protein sorting-associated protein 26	-	Family
B	PF00595	PDZ domain (PDZ)	PDZ domain	PDZ domains are found in diverse signaling proteins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Vacuolar protein sorting-associated protein 26A	-	protein localization cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization cellular process intracellular protein transport protein localization cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization cellular process intracellular protein transport vesicle-mediated transport endosomal transport cytosolic transport retrograde transport, endosome to Golgi localization within membrane endocytic recycling vesicle-mediated transport to the plasma membrane	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 protein-containing complex 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 protein-containing complex membrane membrane protein complex retromer complex retromer, cargo-selective complex cytosol endosome membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane lytic vacuole vacuole lysosome tubular endosome
B	Sorting nexin-27	binding phospholipid binding lipid binding phosphatidylinositol binding ionotropic glutamate receptor binding protein binding signaling receptor binding glutamate receptor binding calcium-dependent protein binding phosphatidylinositol-3-phosphate binding phosphatidylinositol phosphate binding	protein localization positive regulation of AMPA glutamate receptor clustering regulation of localization regulation of postsynaptic membrane organization cellular localization positive regulation of cellular component organization regulation of cellular process regulation of cellular component organization regulation of protein localization regulation of AMPA glutamate receptor clustering positive regulation of postsynaptic membrane organization positive regulation of biological process cellular component organization localization receptor clustering protein localization positive regulation of AMPA glutamate receptor clustering regulation of localization regulation of postsynaptic membrane organization cellular localization positive regulation of cellular component organization regulation of cellular process regulation of cellular component organization regulation of protein localization regulation of AMPA glutamate receptor clustering positive regulation of postsynaptic membrane organization positive regulation of biological process cellular component organization localization receptor clustering cellular macromolecule localization cellular component organization or biogenesis synapse organization regulation of receptor clustering postsynaptic membrane organization regulation of protein localization to membrane positive regulation of cellular process membrane organization regulation of biological process postsynapse organization positive regulation of receptor clustering AMPA glutamate receptor clustering biological regulation positive regulation of protein localization to membrane glutamate receptor clustering neurotransmitter-gated ion channel clustering localization within membrane protein localization to membrane regulation of glutamate receptor clustering cell junction organization regulation of cellular localization macromolecule localization positive regulation of protein localization cellular process regulation of postsynaptic membrane neurotransmitter receptor levels regulation of biological quality protein localization to cell periphery establishment of protein localization nitrogen compound transport neurotransmitter receptor transport transport establishment of protein localization to membrane establishment of localization vesicle-mediated transport protein-containing complex localization vesicle-mediated transport to the plasma membrane neurotransmitter receptor transport to plasma membrane protein transport cellular response to endogenous stimulus cellular response to growth factor stimulus response to stimulus response to endogenous stimulus cellular response to nerve growth factor stimulus response to nerve growth factor response to growth factor cellular response to stimulus signaling signal transduction cell communication intracellular transport establishment of localization in cell intracellular protein transport endosomal transport developmental process multicellular organism development multicellular organismal process anatomical structure development nervous system development system development response to amine response to methamphetamine hydrochloride response to organonitrogen compound response to chemical response to nitrogen compound protein localization to plasma membrane establishment of protein localization to plasma membrane endocytic recycling endosome to plasma membrane protein transport	protein-containing complex membrane membrane protein complex cellular anatomical entity retromer complex endomembrane system intracellular anatomical structure WASH complex cytoplasm cytosol synapse cell junction glutamatergic synapse membrane-bounded organelle protein-containing complex membrane membrane protein complex cellular anatomical entity retromer complex endomembrane system intracellular anatomical structure WASH complex cytoplasm cytosol synapse cell junction glutamatergic synapse membrane-bounded organelle early endosome endosome intracellular vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle organelle vesicle cell periphery immunological synapse plasma membrane endosome membrane early endosome membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane Schaffer collateral - CA1 synapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR028934	Vacuolar protein sorting protein 26 related	Family
A	IPR014752	Arrestin-like, C-terminal	Homologous Superfamily
B	IPR037835	SNX27, RA domain	Domain
B	IPR001683	Phox homology	Domain
B	IPR000159	Ras-associating domain	Domain
B	IPR037831	SNX17/27/31-like	Family
B	IPR037827	SNX27, atypical FERM-like domain	Domain
B	IPR037833	SNX27, PX domain	Domain
B	IPR036034	PDZ superfamily	Homologous Superfamily
B	IPR036871	PX domain superfamily	Homologous Superfamily
B	IPR001478	PDZ domain	Domain
B	IPR029071	Ubiquitin-like domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.