Annotations: 4ZXN

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Glutaminase	e4zxnA1	A: a/b three-layered sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Glutaminase	ECOD (v294.1)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	HE protein	hydrolase activity, acting on ester bonds short-chain carboxylesterase activity carboxylic ester hydrolase activity acetylesterase activity hydrolase activity sialate O-acetylesterase activity catalytic activity sialate 9-O-acetylesterase activity sialate 4-O-acetylesterase activity cation binding ion binding binding metal ion binding small molecule binding hydrolase activity, acting on ester bonds short-chain carboxylesterase activity carboxylic ester hydrolase activity acetylesterase activity hydrolase activity sialate O-acetylesterase activity catalytic activity sialate 9-O-acetylesterase activity sialate 4-O-acetylesterase activity cation binding ion binding binding metal ion binding small molecule binding host cell surface binding host cell surface receptor binding	membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane viral process cellular process cellular component organization or biogenesis membrane fusion involved in viral entry into host cell	cellular anatomical structure membrane virion component virion membrane viral membrane viral envelope host cell plasma membrane host cellular component host cell part host cell membrane other organism part

Chains	Accession	Name	Type
A	IPR042545	Hemagglutinin-esterase	Family
A	IPR008980	Viral capsid/haemagglutinin protein	Homologous Superfamily
A	IPR003860	Haemagglutinin-esterase glycoprotein, haemagglutinin domain	Domain
A	IPR007142	Haemagglutinin-esterase glycoprotein, core	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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

4ZXN | pdb_00004zxn