Annotations: 1JK0

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1jk0b_	All alpha proteins	Ferritin-like	Ferritin-like	Ribonucleotide reductase-like	Ribonucleotide reductase R2	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
A	d1jk0a_	All alpha proteins	Ferritin-like	Ferritin-like	Ribonucleotide reductase-like	Ribonucleotide reductase R2	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	Ribonucleotide reductase-like	8022097	4000846	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Ferritin-like	8034477	3001658	SCOP2 (2022-06-29)
A	SCOP2 Family	Ribonucleotide reductase-like	8022095	4000846	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ferritin-like	8034475	3001658	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)
B		e1jk0B1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: Flavivirus capsid protein C	T: Flavivirus capsid protein C	F:	ECOD (v294.1)
A	DHH	e1jk0A1	A: a/b three-layered sandwiches	X: jelly-roll	H: Double-stranded beta-helix	T: Double-stranded beta-helix	F: DHH	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.620.20	Mainly Alpha	Orthogonal Bundle	Ribonucleotide Reductase, subunit A	Ribonucleotide Reductase, subunit A	CATH (4.3.0)
A	1.10.620.20	Mainly Alpha	Orthogonal Bundle	Ribonucleotide Reductase, subunit A	Ribonucleotide Reductase, subunit A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF00268	Ribonucleotide reductase, small chain (Ribonuc_red_sm)	Ribonucleotide reductase, small chain		Domain
A	PF00268	Ribonucleotide reductase, small chain (Ribonuc_red_sm)	Ribonucleotide reductase, small chain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	ribonucleoside-diphosphate reductase small chain 2	protein heterodimerization activity protein binding binding protein dimerization activity ribonucleoside-diphosphate reductase activity oxidoreductase activity oxidoreductase activity, acting on CH or CH2 groups oxidoreductase activity, acting on CH or CH2 groups, disulfide as acceptor ribonucleoside-diphosphate reductase activity, thioredoxin disulfide as acceptor catalytic activity	nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process nucleobase-containing compound metabolic process deoxyribonucleotide biosynthetic process deoxyribonucleotide metabolic process biosynthetic process organophosphate metabolic process nucleobase-containing small molecule metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process nucleobase-containing compound metabolic process deoxyribonucleotide biosynthetic process deoxyribonucleotide metabolic process biosynthetic process organophosphate metabolic process nucleobase-containing small molecule metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process nucleoside phosphate biosynthetic process metabolic process cellular process small molecule metabolic process phosphorus metabolic process	protein-containing complex cellular anatomical structure intracellular anatomical structure catalytic complex oxidoreductase complex cytoplasm cytosol ribonucleoside-diphosphate reductase complex membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle
A	ribonucleoside-diphosphate reductase small chain 1	ribonucleoside-diphosphate reductase activity oxidoreductase activity oxidoreductase activity, acting on CH or CH2 groups oxidoreductase activity, acting on CH or CH2 groups, disulfide as acceptor ribonucleoside-diphosphate reductase activity, thioredoxin disulfide as acceptor catalytic activity cation binding transition metal ion binding iron ion binding ion binding binding ferrous iron binding metal ion binding small molecule binding ribonucleoside-diphosphate reductase activity oxidoreductase activity oxidoreductase activity, acting on CH or CH2 groups oxidoreductase activity, acting on CH or CH2 groups, disulfide as acceptor ribonucleoside-diphosphate reductase activity, thioredoxin disulfide as acceptor catalytic activity cation binding transition metal ion binding iron ion binding ion binding binding ferrous iron binding metal ion binding small molecule binding protein heterodimerization activity protein binding protein dimerization activity molecular adaptor activity zinc ion binding	nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process nucleobase-containing compound metabolic process deoxyribonucleotide biosynthetic process deoxyribonucleotide metabolic process biosynthetic process organophosphate metabolic process nucleobase-containing small molecule metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process nucleobase-containing compound metabolic process deoxyribonucleotide biosynthetic process deoxyribonucleotide metabolic process biosynthetic process organophosphate metabolic process nucleobase-containing small molecule metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process nucleoside phosphate biosynthetic process metabolic process cellular process small molecule metabolic process phosphorus metabolic process	protein-containing complex cellular anatomical structure intracellular anatomical structure catalytic complex oxidoreductase complex cytoplasm cytosol ribonucleoside-diphosphate reductase complex membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR009078	Ferritin-like superfamily	Homologous Superfamily
B	IPR000358	Ribonucleotide reductase small subunit family	Family
B	IPR030475	Ribonucleotide reductase small subunit, acitve site	Active Site
B	IPR033909	Ribonucleotide reductase small subunit	Family
B	IPR012348	Ribonucleotide reductase-like	Homologous Superfamily
A	IPR033909	Ribonucleotide reductase small subunit	Family
A	IPR012348	Ribonucleotide reductase-like	Homologous Superfamily
A	IPR009078	Ferritin-like superfamily	Homologous Superfamily
A	IPR000358	Ribonucleotide reductase small subunit family	Family
A	IPR030475	Ribonucleotide reductase small subunit, acitve site	Active Site

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.