1KU5

Crystal Structure of recombinant histone HPhA from hyperthermophilic archaeon Pyrococcus horikoshii OT3

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ku5a_	All alpha proteins	Histone-fold	Histone-fold	Archaeal histone	Archaeal histone	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)
B	d1ku5b_	All alpha proteins	Histone-fold	Histone-fold	Archaeal histone	Archaeal histone	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Archaeal histone-fold proteins and histone-like transcription regulators	8019060	4000795	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Core histone-like	8058009	3001387	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Core histone-like	8058009	3001387	SCOP2B (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	Histone_1	e1ku5A1	A: alpha arrays	X: Histone-like	H: Histone-related	T: Histone	F: Histone_1	ECOD (1.6)
B	Histone_1	e1ku5B1	A: alpha arrays	X: Histone-like	H: Histone-related	T: Histone	F: Histone_1	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)
B	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, B	PF00808	Histone-like transcription factor (CBF/NF-Y) and archaeal histone (CBFD_NFYB_HMF)	Histone-like transcription factor (CBF/NF-Y) and archaeal histone	This family includes archaebacterial histones and histone like transcription factors from eukaryotes.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	HPhA	DNA binding binding nucleic acid binding protein heterodimerization activity protein binding protein dimerization activity	-	intracellular organelle cellular anatomical structure intracellular anatomical structure organelle membraneless organelle intracellular membraneless organelle chromosome cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003958	Transcription factor CBF/NF-Y/archaeal histone domain	Domain
A, B	IPR009072	Histone-fold	Homologous Superfamily
A, B	IPR050947	Archaeal histone HMF	Family
A, B	IPR050004	DNA-binding protein HMf-2-like	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.