1X1X

Water-mediate interaction at aprotein-protein interface

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 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	d1x1xa_	Alpha and beta proteins (a+b)	Microbial ribonucleases	Microbial ribonucleases	Bacterial ribonucleases	Barnase	(Bacillus amyloliquefaciens ) [TaxId: 1390 ],	SCOPe (2.08)
B	d1x1xb_	Alpha and beta proteins (a+b)	Microbial ribonucleases	Microbial ribonucleases	Bacterial ribonucleases	Barnase	(Bacillus amyloliquefaciens ) [TaxId: 1390 ],	SCOPe (2.08)
C	d1x1xc_	Alpha and beta proteins (a+b)	Microbial ribonucleases	Microbial ribonucleases	Bacterial ribonucleases	Barnase	(Bacillus amyloliquefaciens ) [TaxId: 1390 ],	SCOPe (2.08)
E	d1x1xe_	Alpha and beta proteins (a/b)	Barstar-like	Barstar-related	Barstar-related	Barstar (barnase inhibitor)	(Bacillus amyloliquefaciens ) [TaxId: 1390 ],	SCOPe (2.08)
F	d1x1xf_	Alpha and beta proteins (a/b)	Barstar-like	Barstar-related	Barstar-related	Barstar (barnase inhibitor)	(Bacillus amyloliquefaciens ) [TaxId: 1390 ],	SCOPe (2.08)
D	d1x1xd1	Alpha and beta proteins (a/b)	Barstar-like	Barstar-related	Barstar-related	Barstar (barnase inhibitor)	(Bacillus amyloliquefaciens ) [TaxId: 1390 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Microbial ribonucleases	8033554	3001847	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Microbial ribonucleases	8033554	3001847	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Microbial ribonucleases	8033554	3001847	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Barstar-related	8043969	3000977	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Barstar-related	8043969	3000977	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Barstar-related	8043969	3000977	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Ribonuclease	e1x1xA1	A: a+b two layers	X: Microbial ribonucleases-like	H: Microbial ribonucleases (From Topology)	T: Microbial ribonucleases	F: Ribonuclease	ECOD (1.6)
B	Ribonuclease	e1x1xB1	A: a+b two layers	X: Microbial ribonucleases-like	H: Microbial ribonucleases (From Topology)	T: Microbial ribonucleases	F: Ribonuclease	ECOD (1.6)
C	Ribonuclease	e1x1xC1	A: a+b two layers	X: Microbial ribonucleases-like	H: Microbial ribonucleases (From Topology)	T: Microbial ribonucleases	F: Ribonuclease	ECOD (1.6)
E	Barstar	e1x1xE1	A: a/b three-layered sandwiches	X: Barstar (barnase inhibitor) (From Topology)	H: Barstar (barnase inhibitor) (From Topology)	T: Barstar (barnase inhibitor)	F: Barstar	ECOD (1.6)
F	Barstar	e1x1xF1	A: a/b three-layered sandwiches	X: Barstar (barnase inhibitor) (From Topology)	H: Barstar (barnase inhibitor) (From Topology)	T: Barstar (barnase inhibitor)	F: Barstar	ECOD (1.6)
D	Barstar	e1x1xD1	A: a/b three-layered sandwiches	X: Barstar (barnase inhibitor) (From Topology)	H: Barstar (barnase inhibitor) (From Topology)	T: Barstar (barnase inhibitor)	F: Barstar	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.450.30	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
B	3.10.450.30	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
C	3.10.450.30	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
E	3.30.370.10	Alpha Beta	2-Layer Sandwich	Barnase	Chain D	CATH (4.3.0)
F	3.30.370.10	Alpha Beta	2-Layer Sandwich	Barnase	Chain D	CATH (4.3.0)
D	3.30.370.10	Alpha Beta	2-Layer Sandwich	Barnase	Chain D	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF00545	ribonuclease (Ribonuclease)	ribonuclease	This enzyme hydrolyses RNA and oligoribonucleotides.	Domain
D, E, F	PF01337	Barstar (barnase inhibitor) (Barstar)	Barstar (barnase inhibitor)	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Ribonuclease	endonuclease activity nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on RNA RNA endonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity catalytic activity RNA binding binding organic cyclic compound binding nucleic acid binding	-	extracellular region cellular anatomical entity
D, E, F	Barstar	-	-	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR000026	Guanine-specific ribonuclease N1-like	Family
A, B, C	IPR053753	Ribonuclease N1/T1-like	Homologous Superfamily
A, B, C	IPR001887	Barnase	Family
A, B, C	IPR016191	Ribonuclease/ribotoxin	Homologous Superfamily
D, E, F	IPR000468	Barstar (barnase inhibitor)	Domain
D, E, F	IPR035905	Barstar-like superfamily	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.