Annotations: 4YMR

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	KH_2	e4ymrA1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: KH_2	ECOD (v295)
B	FlaF_Ig-like	e4ymrB1	A: alpha arrays	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: FlaF_Ig-like	ECOD (v295)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Protein Snx21	ion binding binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding small molecule binding phosphatidylinositol-3-phosphate binding	localization establishment of protein localization protein transport transport macromolecule localization intracellular protein localization establishment of localization	membrane-bounded organelle endosome membrane intracellular anatomical structure early endosome endosome membrane intracellular vesicle early endosome membrane intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure cytoplasmic vesicle membrane bounding membrane of organelle membrane-bounded organelle endosome membrane intracellular anatomical structure early endosome endosome membrane intracellular vesicle early endosome membrane intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane organelle cytoplasm vesicle organelle membrane

Chains	Accession	Name	Type
A, B	IPR011990	Tetratricopeptide-like helical domain superfamily	Homologous Superfamily
A, B	IPR039937	Sorting nexin SNX20/SNX21	Family
A, B	IPR001683	Phox homology	Domain
A, B	IPR036871	PX 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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

4YMR | pdb_00004ymr