Annotations: 5II6

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	UNK_F_TYPE	e5ii6A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: UNK_F_TYPE	ECOD (1.6)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Zona pellucida sperm-binding protein 2	protein binding binding acrosin binding enzyme binding identical protein binding structural constituent of egg coat structural molecule activity extracellular matrix structural constituent	multicellular organismal process regulation of biological process sexual reproduction regulation of reproductive process reproductive process fertilization egg activation cell activation biological regulation negative regulation of biological process regulation of fertilization negative regulation of fertilization negative regulation of reproductive process prevention of polyspermy multicellular organismal process regulation of biological process sexual reproduction regulation of reproductive process reproductive process fertilization egg activation cell activation biological regulation negative regulation of biological process regulation of fertilization negative regulation of fertilization negative regulation of reproductive process prevention of polyspermy cellular process single fertilization sperm-egg recognition cell-cell recognition binding of sperm to zona pellucida cell recognition	extracellular region cellular anatomical entity cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix egg coat plasma membrane membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle extracellular region cellular anatomical entity cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix egg coat plasma membrane membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle late endosome cytoplasm multivesicular body vesicle endoplasmic reticulum

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR017977	Zona pellucida domain, conserved site	Conserved Site
A	IPR042235	Zona pellucida, ZP-C domain	Homologous Superfamily
A	IPR051148	Zona Pellucida Domain Glycoprotein	Family
A	IPR048290	Zona pellucida domain, chordate-type	Domain
A	IPR001507	Zona pellucida domain	Domain

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.