Annotations: 1R4V

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1r4va_	All alpha proteins	Histone-fold	Histone-fold	Bacterial histone-fold protein	Hypothetical protein Aq_328	(Aquifex aeolicus VF5 ) [TaxId: 224324 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Bacterial histone-fold proteins	8018988	4000698	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Core histone-like	8057978	3001387	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Core histone-like	8057997	3001387	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	DUF1931	e1r4vA1	A: alpha arrays	X: Histone-like	H: Histone-related	T: Histone	F: DUF1931	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.20.10	Mainly Alpha	Orthogonal Bundle	Histone, subunit A	Histone, subunit A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09123	Domain of unknown function (DUF1931) (DUF1931)	Domain of unknown function (DUF1931)	Members of this family, which are found in a set of hypothetical bacterial proteins, contain a core of six alpha-helices, where one central helix is surrounded by the other five. The exact function of this family has not, as yet, been determined [1]. ...	Members of this family, which are found in a set of hypothetical bacterial proteins, contain a core of six alpha-helices, where one central helix is surrounded by the other five. The exact function of this family has not, as yet, been determined [1]. The known structure shows this domain contains two copies of the histone fold [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Hypothetical protein AQ_328	protein heterodimerization activity protein binding binding protein dimerization activity	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR009072	Histone-fold	Homologous Superfamily
A	IPR015207	Protein of unknown function DUF1931	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.