Annotations: 3ULP

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	Nucleic acid-binding proteins	8076315	3000135	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Nucleic acid-binding proteins	8076315	3000135	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nucleic acid-binding proteins	8076315	3000135	SCOP2B (2022-06-29)
A	SCOP2 Family	Single strand DNA-binding domain, SSB	8076314	4000346	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nucleic acid-binding proteins	8076315	3000135	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)
D	SSB	e3ulpD1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: SSB	ECOD (1.6)
C	SSB	e3ulpC1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: SSB	ECOD (1.6)
B	SSB	e3ulpB1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: SSB	ECOD (1.6)
A	SSB	e3ulpA1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: SSB	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
C	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	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)
A	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00436	Single-strand binding protein family (SSB)	Single-strand binding protein family	This family includes single stranded binding proteins and also the primosomal replication protein N (PriB). PriB forms a complex with PriA, PriC and ssDNA.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth R], F [auth Q]	DNA (35-MER)	-	-	-
A, B, C, D	Single-strand binding protein	enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity DNA binding binding single-stranded DNA binding nucleic acid binding	positive regulation of mitochondrial DNA metabolic process positive regulation of organelle organization regulation of cellular process regulation of cellular component organization positive regulation of cellular component organization positive regulation of DNA replication positive regulation of biological process positive regulation of mitochondrial DNA replication mitochondrial DNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process cellular component organization positive regulation of metabolic process positive regulation of macromolecule metabolic process positive regulation of mitochondrial DNA metabolic process positive regulation of organelle organization regulation of cellular process regulation of cellular component organization positive regulation of cellular component organization positive regulation of DNA replication positive regulation of biological process positive regulation of mitochondrial DNA replication mitochondrial DNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process cellular component organization positive regulation of metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process cellular component organization or biogenesis positive regulation of cellular process mitochondrion organization regulation of biological process DNA-templated DNA replication biological regulation primary metabolic process DNA metabolic process regulation of macromolecule metabolic process nucleic acid metabolic process regulation of organelle organization organelle organization DNA replication positive regulation of DNA metabolic process mitochondrial DNA replication regulation of mitochondrion organization regulation of DNA-templated DNA replication positive regulation of DNA-templated DNA replication metabolic process cellular process regulation of mitochondrial DNA replication macromolecule metabolic process regulation of metabolic process regulation of mitochondrial DNA metabolic process regulation of DNA metabolic process regulation of DNA replication	membrane-bounded organelle intracellular anatomical structure mitochondrion membrane-enclosed lumen intracellular membraneless organelle nucleoid intracellular membrane-bounded organelle mitochondrial matrix intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle membrane-bounded organelle intracellular anatomical structure mitochondrion membrane-enclosed lumen intracellular membraneless organelle nucleoid intracellular membrane-bounded organelle mitochondrial matrix intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle cytoplasm mitochondrial nucleoid plastid apicoplast

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR000424	Primosome PriB/single-strand DNA-binding	Family
A, B, C, D	IPR011344	Single-stranded DNA-binding protein	Family
A, B, C, D	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily

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.