Annotations: 1SRU

Crystal structure of full length E. coli SSB protein

External Resource: Annotation

Domain Annotation: SCOP/SCOPe 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	d1srua_	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	ssDNA-binding protein	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1srub_	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	ssDNA-binding protein	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d1sruc_	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	ssDNA-binding protein	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d1srud_	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	ssDNA-binding protein	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Stap_Strp_toxin	e1sruA1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Stap_Strp_toxin	ECOD (v294.2)
B	Stap_Strp_toxin	e1sruB1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Stap_Strp_toxin	ECOD (v294.2)
C	Stap_Strp_toxin	e1sruC1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Stap_Strp_toxin	ECOD (v294.2)
D	Stap_Strp_toxin	e1sruD1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Stap_Strp_toxin	ECOD (v294.2)

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)
B	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)
D	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
A, B, C, D	Single-strand binding protein	enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity identical protein binding protein binding binding DNA binding single-stranded DNA binding nucleic acid binding	nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus mismatch repair response to stimulus cellular response to stress DNA damage response response to stress nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus mismatch repair response to stimulus cellular response to stress DNA damage response response to stress DNA repair DNA-templated DNA replication DNA recombination recombinational repair SOS response	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex nucleoid single-stranded DNA-binding protein complex protein-DNA complex intracellular membraneless organelle chromosome intracellular organelle organelle membraneless organelle replication fork cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex nucleoid single-stranded DNA-binding protein complex protein-DNA complex intracellular membraneless organelle chromosome intracellular organelle organelle membraneless organelle replication fork replisome

InterPro: Protein Family Classification InterPro Database Homepage

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

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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.