Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
CSCOP2B SuperfamilyR1 subunit of ribonucleotide reductase, N-terminal domain 8038325 3000927 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyPFL-like glycyl radical enzymes 8043875 3001069 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyPFL-like glycyl radical enzymes 8043875 3001069 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyR1 subunit of ribonucleotide reductase, N-terminal domain 8038325 3000927 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyR1 subunit of ribonucleotide reductase, N-terminal domain 8038325 3000927 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyPFL-like glycyl radical enzymes 8043875 3001069 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyR1 subunit of ribonucleotide reductase, N-terminal domain 8038325 3000927 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyPFL-like glycyl radical enzymes 8043875 3001069 SCOP2B (2022-06-29)
ESCOP2B SuperfamilyFerritin-like 8032952 3001658 SCOP2B (2022-06-29)
GSCOP2B SuperfamilyFerritin-like 8032952 3001658 SCOP2B (2022-06-29)
FSCOP2B SuperfamilyFerritin-like 8032952 3001658 SCOP2B (2022-06-29)
HSCOP2B SuperfamilyFerritin-like 8032952 3001658 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
CATP-cone_1e5cnvC3 A: alpha arraysX: RuvA-CH: ATP cone (From Topology)T: ATP coneF: ATP-cone_1ECOD (1.6)
CRibonuc_red_lgNe5cnvC2 A: alpha arraysX: Alpha helical domain of ribonucleotide reductases (From Topology)H: Alpha helical domain of ribonucleotide reductases (From Topology)T: Alpha helical domain of ribonucleotide reductasesF: Ribonuc_red_lgNECOD (1.6)
CRibonuc_red_lgCe5cnvC1 A: a/b barrelsX: Ten stranded beta/alpha barrel (From Topology)H: Ten stranded beta/alpha barrel (From Topology)T: Ten stranded beta/alpha barrelF: Ribonuc_red_lgCECOD (1.6)
DATP-cone_1e5cnvD2 A: alpha arraysX: RuvA-CH: ATP cone (From Topology)T: ATP coneF: ATP-cone_1ECOD (1.6)
DRibonuc_red_lgNe5cnvD3 A: alpha arraysX: Alpha helical domain of ribonucleotide reductases (From Topology)H: Alpha helical domain of ribonucleotide reductases (From Topology)T: Alpha helical domain of ribonucleotide reductasesF: Ribonuc_red_lgNECOD (1.6)
DRibonuc_red_lgCe5cnvD1 A: a/b barrelsX: Ten stranded beta/alpha barrel (From Topology)H: Ten stranded beta/alpha barrel (From Topology)T: Ten stranded beta/alpha barrelF: Ribonuc_red_lgCECOD (1.6)
AATP-cone_1e5cnvA2 A: alpha arraysX: RuvA-CH: ATP cone (From Topology)T: ATP coneF: ATP-cone_1ECOD (1.6)
ARibonuc_red_lgNe5cnvA3 A: alpha arraysX: Alpha helical domain of ribonucleotide reductases (From Topology)H: Alpha helical domain of ribonucleotide reductases (From Topology)T: Alpha helical domain of ribonucleotide reductasesF: Ribonuc_red_lgNECOD (1.6)
ARibonuc_red_lgCe5cnvA1 A: a/b barrelsX: Ten stranded beta/alpha barrel (From Topology)H: Ten stranded beta/alpha barrel (From Topology)T: Ten stranded beta/alpha barrelF: Ribonuc_red_lgCECOD (1.6)
BATP-cone_1e5cnvB2 A: alpha arraysX: RuvA-CH: ATP cone (From Topology)T: ATP coneF: ATP-cone_1ECOD (1.6)
BRibonuc_red_lgNe5cnvB3 A: alpha arraysX: Alpha helical domain of ribonucleotide reductases (From Topology)H: Alpha helical domain of ribonucleotide reductases (From Topology)T: Alpha helical domain of ribonucleotide reductasesF: Ribonuc_red_lgNECOD (1.6)
BRibonuc_red_lgCe5cnvB1 A: a/b barrelsX: Ten stranded beta/alpha barrel (From Topology)H: Ten stranded beta/alpha barrel (From Topology)T: Ten stranded beta/alpha barrelF: Ribonuc_red_lgCECOD (1.6)
ERibonuc_red_sme5cnvE1 A: alpha bundlesX: Ferritin/Heme oxygenase/4-helical cytokinesH: Ferritin/Heme oxygenaseT: Heme oxygenase/Ribonucleotide reductaseF: Ribonuc_red_smECOD (1.6)
GRibonuc_red_sme5cnvG1 A: alpha bundlesX: Ferritin/Heme oxygenase/4-helical cytokinesH: Ferritin/Heme oxygenaseT: Heme oxygenase/Ribonucleotide reductaseF: Ribonuc_red_smECOD (1.6)
FRibonuc_red_sme5cnvF1 A: alpha bundlesX: Ferritin/Heme oxygenase/4-helical cytokinesH: Ferritin/Heme oxygenaseT: Heme oxygenase/Ribonucleotide reductaseF: Ribonuc_red_smECOD (1.6)
HRibonuc_red_sme5cnvH1 A: alpha bundlesX: Ferritin/Heme oxygenase/4-helical cytokinesH: Ferritin/Heme oxygenaseT: Heme oxygenase/Ribonucleotide reductaseF: Ribonuc_red_smECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D
PF02867Ribonucleotide reductase, barrel domain (Ribonuc_red_lgC)Ribonucleotide reductase, barrel domain- Family
A, B, C, D
PF00317Ribonucleotide reductase, all-alpha domain (Ribonuc_red_lgN)Ribonucleotide reductase, all-alpha domain- Domain
A, B, C, D
PF03477ATP cone domain (ATP-cone)ATP cone domain- Domain
E, F, G, H
PF00268Ribonucleotide reductase, small chain (Ribonuc_red_sm)Ribonucleotide reductase, small chain- Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B, C, D
Ribonucleoside-diphosphate reductase 1 subunit alpha
E, F, G, H
Ribonucleoside-diphosphate reductase 1 subunit beta

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
A, G
ribonucleoside-diphosphate reductase (class I)  M-CSA #918

Ribonucleoside-diphosphate reductase (RNR) catalyses the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides using thioredoxin as a co-substrate. This entry represents the class I RNRs. Class I enzymes consist of two homodimeric proteins, R1 (alpha2), coded by the nrdA gene, and R2 (beta2), coded by nrdB. The large alpha chain harbours the catalytic site and binding sites for allosteric effectors. The small beta chain contains an oxygen-linked diferric centre and, in its active form, a stable tyrosyl free radical.

Defined by 12 residues: CYS:A-225ASN:A-437CYS:A-439GLU:A-441CYS:A-462TYR:A-730TYR:A-731GLU:G-115TYR:G-122ASP:G-237GLU:G-350TYR:G-356
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Explore in 3DM-CSA Motif Definition
Up to 10 residues are supported for Structure Motif searching, this motif has 12 residues.
EC: 1.17.4.1 (PDB Primary Data)