Annotations: 4OLK

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Hemagglutinin	e4olkA1	A: a/b three-layered sandwiches	X: Outer membrane meander beta-barrels	H: Porins	T: Porin	F: Hemagglutinin	ECOD (v294.1)
B	Spermine_synth	e4olkB1	A: a/b three-layered sandwiches	X: HTH	H: Toll/Interleukin receptor TIR domain	T: Toll/Interleukin receptor TIR domain	F: Spermine_synth	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.1720.10	Alpha Beta	Alpha-Beta Complex	endopeptidase fold (from Nostoc punctiforme)	endopeptidase domain like (from Nostoc punctiforme)	CATH (4.3.0)
B	3.90.1720.10	Alpha Beta	Alpha-Beta Complex	endopeptidase fold (from Nostoc punctiforme)	endopeptidase domain like (from Nostoc punctiforme)	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Endolysin	peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding peptidoglycan muralytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides N-acetylmuramoyl-L-alanine amidase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process defense response to bacterium biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to bacterium response to stress response to external stimulus proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process defense response to bacterium biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to bacterium response to stress response to external stimulus response to external biotic stimulus response to biotic stimulus carbohydrate derivative catabolic process catabolic process peptidoglycan catabolic process glycosaminoglycan metabolic process carbohydrate derivative metabolic process aminoglycan catabolic process macromolecule catabolic process glycosaminoglycan catabolic process aminoglycan metabolic process peptidoglycan metabolic process symbiont-mediated cytolysis of host cell viral life cycle disruption of cell in another organism cytolysis biological process involved in interaction with host biological process involved in symbiotic interaction viral release from host cell by cytolysis exit from host cell viral process cytolysis in another organism viral release from host cell disruption of anatomical structure in another organism symbiont-mediated killing of host cell killing of cells of another organism cell killing	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003646	SH3-like domain, bacterial-type	Domain
A, B	IPR002502	N-acetylmuramoyl-L-alanine amidase domain	Domain
A, B	IPR007921	CHAP domain	Domain
A, B	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
A, B	IPR036505	N-acetylmuramoyl-L-alanine amidase/PGRP 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.