4YOU | pdb_00004you

Chains	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	e4youA1	A: a/b three-layered sandwiches	X: cradle loop barrel	H: RIFT-related	T: acid protease	F:	ECOD (v294.1)
B	e4youB1	A: a/b three-layered sandwiches	X: cradle loop barrel	H: RIFT-related	T: acid protease	F:	ECOD (v294.1)
C	e4youC1	A: a/b three-layered sandwiches	X: cradle loop barrel	H: RIFT-related	T: acid protease	F:	ECOD (v294.1)

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)

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

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

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