Annotations: 4ART

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF20828	e4artA2	A: a/b three-layered sandwiches	X: Atg7 N-terminal domain-like	H: ORF273 protein from Acidianus two-tailed virus (From Topology)	T: ORF273 protein from Acidianus two-tailed virus	F: PF20828	ECOD (1.6)
B	PF20828	e4artB2	A: a/b three-layered sandwiches	X: Atg7 N-terminal domain-like	H: ORF273 protein from Acidianus two-tailed virus (From Topology)	T: ORF273 protein from Acidianus two-tailed virus	F: PF20828	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF20828	Acidianus two-tailed virus, ORF273 protein (ATV_ORF273)	Acidianus two-tailed virus, ORF273 protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	STRUCTURAL PROTEIN ORF273	-	-	virion component

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR048934	Acidianus two-tailed virus, ORF273 protein	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.