Annotations: 9YC3

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PAD_N	e9yc3A1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: PAD_N	ECOD (v295.2)

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A	Heavy Chain	IGHV1	-	male gamete fusion factor hap2	SAbDab (2026-08-21)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Male gamete fusion factor HAP2	-	-	cell periphery cellular anatomical structure plasma membrane membrane
A	Nanobody WNb 334	-	-	-

Chains	Accession	Name	Type
B	IPR040326	HAP2/GCS1	Family

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.

9YC3 | pdb_00009yc3