Annotations: 4P2I

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PX	e4p2iA1	A: a+b two layers	X: PX domain (From Topology)	H: PX domain (From Topology)	T: PX domain	F: PX	ECOD (1.6)
B	PX	e4p2iB1	A: a+b two layers	X: PX domain (From Topology)	H: PX domain (From Topology)	T: PX domain	F: PX	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.1520.10	Alpha Beta	2-Layer Sandwich	PX Domain	Phox-like domain	CATH (4.3.0)
B	3.30.1520.10	Alpha Beta	2-Layer Sandwich	PX Domain	Phox-like domain	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	MKIAA0254 protein	binding phospholipid binding lipid binding phosphatidylinositol binding	developmental process secretory granule organization dense core granule maturation developmental maturation secretory granule maturation vesicle organization cellular component organization organelle organization anatomical structure maturation anatomical structure development cellular process cellular component organization or biogenesis endomembrane system organization multicellular organismal process developmental process secretory granule organization dense core granule maturation developmental maturation secretory granule maturation vesicle organization cellular component organization organelle organization anatomical structure maturation anatomical structure development cellular process cellular component organization or biogenesis endomembrane system organization multicellular organismal process cellular developmental process connective tissue development animal organ development tissue development multicellular organism development skeletal system development cell differentiation chondrocyte differentiation cartilage development system development localization secretion by cell exocytosis transport secretion export from cell establishment of localization vesicle-mediated transport protein localization establishment of protein localization cellular localization nitrogen compound transport signaling hormone secretion cell communication protein localization to extracellular region peptide secretion amide transport signal release cellular macromolecule localization regulation of biological quality regulation of biological process regulation of hormone levels organic substance transport biological regulation establishment of protein localization to extracellular region cell-cell signaling protein secretion peptide transport protein transport peptide hormone secretion macromolecule localization hormone transport insulin secretion establishment of localization in cell	membrane-bounded organelle endosome membrane intracellular anatomical structure early endosome endosome membrane intracellular vesicle early endosome membrane cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle membrane-bounded organelle endosome membrane intracellular anatomical structure early endosome endosome membrane intracellular vesicle early endosome membrane cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane organelle cytoplasm vesicle organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003114	Phox-associated domain	Domain
A, B	IPR001683	Phox homology	Domain
A, B	IPR013937	Sorting nexin, C-terminal	Domain
A, B	IPR036871	PX domain superfamily	Homologous Superfamily
A, B	IPR037909	SNX19, PX domain	Domain

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.