Annotations: 3Q8D

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF11967	e3q8dA2	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: PF11967	ECOD (1.6)
A	PF02565	e3q8dA1	A: few secondary structure elements	X: Glucocorticoid receptor-like	H: LIM domain-like	T: LIM domain-like	F: PF02565	ECOD (1.6)
B	PF11967	e3q8dB1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: PF11967	ECOD (1.6)
B	PF02565	e3q8dB2	A: few secondary structure elements	X: Glucocorticoid receptor-like	H: LIM domain-like	T: LIM domain-like	F: PF02565	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
A	1.20.1440.120	Mainly Alpha	Up-down Bundle	de novo design (two linked rop proteins)	Recombination protein O, C-terminal domain	CATH (4.3.0)
B	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
B	1.20.1440.120	Mainly Alpha	Up-down Bundle	de novo design (two linked rop proteins)	Recombination protein O, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF11967	Recombination protein O N terminal (RecO_N)	Recombination protein O N terminal	Recombination protein O (RecO) is involved in DNA repair and Pfam:PF00470 pathway recombination. This domain forms a beta barrel structure.	Domain
A, B	PF02565	Recombination protein O C terminal (RecO_C)	Recombination protein O C terminal	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	DNA repair protein recO	-	cellular response to stimulus response to stimulus DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process cellular response to stress DNA damage response response to stress recombinational repair metabolic process cellular response to stimulus response to stimulus DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process cellular response to stress DNA damage response response to stress recombinational repair metabolic process cellular process macromolecule metabolic process DNA repair double-strand break repair	intracellular organelle bacterial nucleoid intracellular anatomical structure organelle intracellular non-membrane-bounded organelle nucleoid cellular anatomical entity non-membrane-bounded organelle
C [auth E], D [auth F]	Single-stranded DNA-binding protein	enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity identical protein binding protein binding binding DNA binding organic cyclic compound binding single-stranded DNA binding nucleic acid binding	cellular response to stimulus mismatch repair response to stimulus primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process cellular response to stress DNA damage response response to stress metabolic process cellular process cellular response to stimulus mismatch repair response to stimulus primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process cellular response to stress DNA damage response response to stress metabolic process cellular process macromolecule metabolic process DNA repair DNA-templated DNA replication DNA replication DNA recombination recombinational repair positive regulation of molecular function regulation of molecular function regulation of catalytic activity biological regulation positive regulation of catalytic activity SOS response	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol protein-containing complex nucleoid single-stranded DNA-binding protein complex protein-DNA complex chromosome intracellular organelle organelle intracellular non-membrane-bounded organelle replication fork replisome intracellular anatomical structure cytoplasm cellular anatomical entity cytosol protein-containing complex nucleoid single-stranded DNA-binding protein complex protein-DNA complex chromosome intracellular organelle organelle intracellular non-membrane-bounded organelle replication fork replisome non-membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR022572	DNA replication/recombination mediator RecO, N-terminal	Domain
A, B	IPR042242	Recombination protein O, C-terminal	Homologous Superfamily
A, B	IPR037278	ARFGAP/RecO-like zinc finger	Homologous Superfamily
A, B	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A, B	IPR003717	Recombination protein O, RecO	Family
C [auth E], D [auth F]	IPR011344	Single-stranded DNA-binding protein	Family
C [auth E], D [auth F]	IPR000424	Primosome PriB/single-strand DNA-binding	Family
C [auth E], D [auth F]	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily

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.