Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Ribonucleoside-diphosphate reductase large subunit

Gene

I4L

Organism
Variola virus (isolate Human/India/Ind3/1967) (VARV) (Smallpox virus)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at transcript leveli

Functioni

Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides.

Catalytic activityi

2'-deoxyribonucleoside diphosphate + thioredoxin disulfide + H2O = ribonucleoside diphosphate + thioredoxin.

Enzyme regulationi

Under complex allosteric control mediated by deoxynucleoside triphosphates and ATP binding. The type of nucleotide bound at the specificity site determines substrate preference. It seems probable that ATP makes the enzyme reduce CDP and UDP, dGTP favors ADP reduction and dTTP favors GDP reduction (By similarity).By similarity

Pathwayi: DNA replication

This protein is involved in the pathway DNA replication, which is part of Genetic information processing.
View all proteins of this organism that are known to be involved in the pathway DNA replication and in Genetic information processing.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei202SubstrateBy similarity1
Sitei218Important for hydrogen atom transferBy similarity1
Sitei226Allosteric effector bindingBy similarity1
Binding sitei247Substrate; via amide nitrogenBy similarity1
Sitei256Allosteric effector bindingBy similarity1
Active sitei427Proton acceptorBy similarity1
Active sitei429Cysteine radical intermediateBy similarity1
Active sitei431Proton acceptorBy similarity1
Sitei444Important for hydrogen atom transferBy similarity1
Sitei735Important for electron transferBy similarity1
Sitei736Important for electron transferBy similarity1
Sitei766Interacts with thioredoxin/glutaredoxinBy similarity1
Sitei769Interacts with thioredoxin/glutaredoxinBy similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

DNA replication

Keywords - Ligandi

ATP-binding, Nucleotide-binding

Enzyme and pathway databases

UniPathwayiUPA00326.

Names & Taxonomyi

Protein namesi
Recommended name:
Ribonucleoside-diphosphate reductase large subunit (EC:1.17.4.1)
Alternative name(s):
Ribonucleotide reductase large subunit
Gene namesi
ORF Names:I4L, K4L, ORF3L
OrganismiVariola virus (isolate Human/India/Ind3/1967) (VARV) (Smallpox virus)
Taxonomic identifieri587200 [NCBI]
Taxonomic lineageiVirusesdsDNA viruses, no RNA stagePoxviridaeChordopoxvirinaeOrthopoxvirus
Virus hostiHomo sapiens (Human) [TaxID: 9606]
Proteomesi
  • UP000002060 Componenti: Genome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001872331 – 771Ribonucleoside-diphosphate reductase large subunitAdd BLAST771

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi218 ↔ 444Redox-activeBy similarity

Keywords - PTMi

Disulfide bond

Proteomic databases

PRIDEiP32984.

Expressioni

Inductioni

Expressed early in the viral replicative cycle.

Keywords - Developmental stagei

Early protein

Interactioni

Subunit structurei

Heterotetramer composed of a homodimer of the large subunit (R1) and a homodimer of the small subunit (R2). Larger multisubunit protein complex are also active, composed of (R1)n(R2)n (By similarity).By similarity

Structurei

3D structure databases

ProteinModelPortaliP32984.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini1 – 92ATP-conePROSITE-ProRule annotationAdd BLAST92

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni217 – 218Substrate bindingBy similarity2
Regioni427 – 431Substrate bindingBy similarity5
Regioni602 – 606Substrate bindingBy similarity5

Sequence similaritiesi

Contains 1 ATP-cone domain.PROSITE-ProRule annotation

Phylogenomic databases

KOiK10807.

Family and domain databases

InterProiIPR005144. ATP-cone_dom.
IPR013346. NrdE_NrdA.
IPR000788. RNR_lg_C.
IPR013509. RNR_lsu_N.
IPR008926. RNR_R1-su_N.
[Graphical view]
PfamiPF03477. ATP-cone. 1 hit.
PF02867. Ribonuc_red_lgC. 1 hit.
PF00317. Ribonuc_red_lgN. 1 hit.
[Graphical view]
PRINTSiPR01183. RIBORDTASEM1.
SUPFAMiSSF48168. SSF48168. 1 hit.
TIGRFAMsiTIGR02506. NrdE_NrdA. 1 hit.
PROSITEiPS51161. ATP_CONE. 1 hit.
PS00089. RIBORED_LARGE. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P32984-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MFVIKRNGYK ENVMFDKITS RIRKLCYGLN TDHIDPIKIA MKVIQGIYNG
60 70 80 90 100
VTTVELDTLT AEIAATCTTQ HPDYAILAAR IAVSNLHKET KKLFSEVMKD
110 120 130 140 150
LFNYVNPKNG KHSPIISSIT MDVVNKYKDK LNSVIIYERD FSYNYFGFKT
160 170 180 190 200
LEKSYLLKIN NKIVERPQHM LMRVAVGIHQ WDIDSAIETY NLLSEKWFTH
210 220 230 240 250
ASPTLFNAGT SRHQMSSCFL LNMMDDSIEG IYDTLKRCAL ISKMAGGIGL
260 270 280 290 300
SISNIRASGS YISGTNGASN GIIPMLRVYN NTARYIDQGG NKRPGVMTIY
310 320 330 340 350
LEPWHSDIMA FLDLKKNTGN EEHRTRDLFI ALWIPDLFMK RVKDDGEWSL
360 370 380 390 400
MCPDECPGLD NVWGDEFERL YTLYEREKRY KSIIKARVVW KAIIESQIET
410 420 430 440 450
GTPFILYKDA CNKKSNQQNL GTIKCSNLCT EIIQYADANE VAVCNLASIA
460 470 480 490 500
LNMFVIDGQF DFLKLKDVVK VIVRNLNKII DINYYPIPEA EISNKRHRPI
510 520 530 540 550
GIGVQGLADA FILLNYPFDS LEAQDLNKKI FETIYYGALE ASCELAEKEG
560 570 580 590 600
PYDTYVGSYA SNGILQYDLW NVVPSDLWNW EPLKDKIRTY GLRNSLLVAP
610 620 630 640 650
MPTASTAQIL GNNESVEPYT SNIYTRRVLS GEFQVVNPHL LRVLTERKLW
660 670 680 690 700
NDEIKNRIMV DGGSIQNTNL PEDIKRVYKT IWEIPQKTII KMAADRGAFI
710 720 730 740 750
DQSQSMNIHI ADPSYSKLTS MHFYGWSLGL KTGMYYLRTK PASAPIQFTL
760 770
DKDKIKPLVV CDSEICTSCS G
Length:771
Mass (Da):87,761
Last modified:October 1, 1993 - v1
Checksum:iE628AAA9AD95A8CD
GO

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural varianti509D → Y in strain: Garcia-1966. 1
Natural varianti764E → K in strain: Garcia-1966. 1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X67119 Genomic DNA. Translation: CAA47558.1.
X69198 Genomic DNA. Translation: CAA48999.1.
L22579 Genomic DNA. Translation: AAA60806.1.
X76263 Genomic DNA. Translation: CAA53832.1.
PIRiB36843.
T28496.
RefSeqiNP_042102.1. NC_001611.1.

Genome annotation databases

GeneIDi1486459.
KEGGivg:1486459.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X67119 Genomic DNA. Translation: CAA47558.1.
X69198 Genomic DNA. Translation: CAA48999.1.
L22579 Genomic DNA. Translation: AAA60806.1.
X76263 Genomic DNA. Translation: CAA53832.1.
PIRiB36843.
T28496.
RefSeqiNP_042102.1. NC_001611.1.

3D structure databases

ProteinModelPortaliP32984.
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiP32984.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi1486459.
KEGGivg:1486459.

Phylogenomic databases

KOiK10807.

Enzyme and pathway databases

UniPathwayiUPA00326.

Family and domain databases

InterProiIPR005144. ATP-cone_dom.
IPR013346. NrdE_NrdA.
IPR000788. RNR_lg_C.
IPR013509. RNR_lsu_N.
IPR008926. RNR_R1-su_N.
[Graphical view]
PfamiPF03477. ATP-cone. 1 hit.
PF02867. Ribonuc_red_lgC. 1 hit.
PF00317. Ribonuc_red_lgN. 1 hit.
[Graphical view]
PRINTSiPR01183. RIBORDTASEM1.
SUPFAMiSSF48168. SSF48168. 1 hit.
TIGRFAMsiTIGR02506. NrdE_NrdA. 1 hit.
PROSITEiPS51161. ATP_CONE. 1 hit.
PS00089. RIBORED_LARGE. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiRIR1_VAR67
AccessioniPrimary (citable) accession number: P32984
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1993
Last sequence update: October 1, 1993
Last modified: October 5, 2016
This is version 94 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Allosteric enzyme, Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.