4YOU

Crystal structure of a trimeric exonuclease PhoExo I from Pyrococcus horikoshii OT3 at 2.20A resolution.

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	DUF4152	e4youA1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Uncharacterized protein PF2046 (From Topology)	T: Uncharacterized protein PF2046	F: DUF4152	ECOD (1.6)
B	DUF4152	e4youB1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Uncharacterized protein PF2046 (From Topology)	T: Uncharacterized protein PF2046	F: DUF4152	ECOD (1.6)
C	DUF4152	e4youC1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Uncharacterized protein PF2046 (From Topology)	T: Uncharacterized protein PF2046	F: DUF4152	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.420.440	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
B	3.30.420.440	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
C	3.30.420.440	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF13680	Protein of unknown function (DUF4152) (DUF4152)	Protein of unknown function (DUF4152)	This family of proteins is functionally uncharacterised. This family of proteins is found in archaea. Proteins in this family are approximately 230 amino acids in length. The structure of PF2046 from pyrococcus furiosus has been solved. It shows an ...	This family of proteins is functionally uncharacterised. This family of proteins is found in archaea. Proteins in this family are approximately 230 amino acids in length. The structure of PF2046 from pyrococcus furiosus has been solved. It shows an RNaseH like fold that conserves critical catalytic residues [1]. This suggests that these proteins may cleave nucleic acid.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	3-5 exonuclease PhoExo I	nuclease activity hydrolase activity, acting on ester bonds hydrolase activity exonuclease activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR025206	Protein of unknown function DUF4152	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.