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Q9ZLF9

- RIR1_HELPJ

UniProt

Q9ZLF9 - RIR1_HELPJ

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Protein
Ribonucleoside-diphosphate reductase subunit alpha
Gene
nrdA, jhp_0621
Organism
Helicobacter pylori (strain J99 / ATCC 700824) (Campylobacter pylori J99)
Status
Reviewed - Annotation score: 4 out of 5 - Protein inferred from homologyi

Functioni

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

Catalytic activityi

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

Enzyme regulationi

Under complex allosteric control mediated by deoxynucleoside triphosphates and ATP binding to separate specificity and activation sites on the alpha subunit. 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. Stimulated by ATP and inhibited by dATP binding to the activity site By similarity.

Pathwayi

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei6 – 61Allosteric activator By similarity
Binding sitei52 – 521Allosteric activator By similarity
Binding sitei200 – 2001Substrate By similarity
Sitei216 – 2161Important for hydrogen atom transfer By similarity
Sitei223 – 2231Allosteric effector binding By similarity
Binding sitei244 – 2441Substrate; via amide nitrogen By similarity
Sitei253 – 2531Allosteric effector binding By similarity
Active sitei424 – 4241Proton acceptor By similarity
Active sitei426 – 4261Cysteine radical intermediate By similarity
Active sitei428 – 4281Proton acceptor By similarity
Sitei497 – 4971Important for hydrogen atom transfer By similarity
Sitei763 – 7631Important for electron transfer By similarity
Sitei764 – 7641Important for electron transfer By similarity
Sitei784 – 7841Interacts with thioredoxin/glutaredoxin By similarity
Sitei787 – 7871Interacts with thioredoxin/glutaredoxin By similarity

GO - Molecular functioni

  1. ATP binding Source: UniProtKB-KW
  2. ribonucleoside-diphosphate reductase activity, thioredoxin disulfide as acceptor Source: UniProtKB-EC

GO - Biological processi

  1. DNA replication Source: UniProtKB-UniPathway
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

DNA replication

Keywords - Ligandi

ATP-binding, Nucleotide-binding

Enzyme and pathway databases

BioCyciHPYL85963:GJB9-632-MONOMER.
UniPathwayiUPA00326.

Names & Taxonomyi

Protein namesi
Recommended name:
Ribonucleoside-diphosphate reductase subunit alpha (EC:1.17.4.1)
Alternative name(s):
Ribonucleotide reductase
Gene namesi
Name:nrdA
Ordered Locus Names:jhp_0621
OrganismiHelicobacter pylori (strain J99 / ATCC 700824) (Campylobacter pylori J99)
Taxonomic identifieri85963 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesHelicobacteraceaeHelicobacter
ProteomesiUP000000804: Chromosome

Subcellular locationi

GO - Cellular componenti

  1. ribonucleoside-diphosphate reductase complex Source: InterPro
Complete GO annotation...

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 788788Ribonucleoside-diphosphate reductase subunit alpha
PRO_0000187216Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Disulfide bondi216 ↔ 497Redox-active By similarity

Keywords - PTMi

Disulfide bond

Interactioni

Subunit structurei

Tetramer of two alpha and two beta subunits By similarity.

Protein-protein interaction databases

STRINGi85963.jhp0621.

Structurei

3D structure databases

ProteinModelPortaliQ9ZLF9.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini2 – 9291ATP-cone
Add
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni12 – 187Allosteric activator binding By similarity
Regioni215 – 2162Substrate binding By similarity
Regioni424 – 4285Substrate binding By similarity
Regioni659 – 6635Substrate binding By similarity

Sequence similaritiesi

Contains 1 ATP-cone domain.

Phylogenomic databases

eggNOGiCOG0209.
KOiK00525.
OMAiEACLMCQ.
OrthoDBiEOG6J48HC.

Family and domain databases

InterProiIPR005144. ATP-cone.
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.

Q9ZLF9-1 [UniParc]FASTAAdd to Basket

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MITVVKRNGR IEPLDITKIQ KYTKDATDNL EGVSQSELEV DARLQFRDKI    50
TTEEIQQTLI KTAVDKIDID TPNWSFVASR LFLYDLYHKV SGFTGYRHLK 100
EYFENAEEKG RILKGFKEKF DLEFLNSQIK PERDFQFNYL GIKTLYDRYL 150
LKDANNHPIE LPQHMFMSIA MFLAQNEQEL NKIALEFYEV LSKFEAMCAT 200
PTLANARTTK HQLSSCYIGS TPDNIEGIFD SYKEMALLSK YGGGIGWDFS 250
LVRSIGSYID GHKNASAGTI PFLKIANDVA IAVDQLGTRK GAIAVYLEIW 300
HIDVMEFIDL RKNSGDERRR AHDLFPALWV CDLFMKRVLE DAMWTLFDPY 350
ECKDLTELYG QDFEKRYLEY EKDPKIIKEY INAKDLWKKI LMNYFEAGLP 400
FLAFKDNANR CNPNAHAGII RSSNLCTEIF QNTAPNHYYM QIEYTDGAIE 450
FFEEKELVTT DSNITKCANK LTSTDILKGK KIYIATKVAK DGQTAVCNLA 500
SINLSKINTE EDIKRVVPIM VRLLDNVIDL NFYPNRKVKA TNLQNRAIGL 550
GVMGEAQMLA EHQIAWGSKE HLEKIDALME QISYHAIDTS ANLAKEKGVY 600
KDFENSEWSK GIFPIDKANN EALKLTEKGL FNHACDWQGL REKVKANGMR 650
NGYLMAIAPT SSISILVGTT QTIEPIYKKK WFEENLSGLI PVVVPNLNVE 700
TWNFYTSAYD IDAKDLIKAA AVRQKWIDQG QSINVFLRIE NASGKTLHEI 750
YTLAWKLGLK STYYLRSESP SIDEKSVLDR SVECFNCQ 788
Length:788
Mass (Da):90,232
Last modified:May 1, 1999 - v1
Checksum:iA98AFCBC5CC6398E
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AE001439 Genomic DNA. Translation: AAD06201.1.
PIRiF71908.
RefSeqiNP_223339.1. NC_000921.1.
WP_000633948.1. NC_000921.1.

Genome annotation databases

EnsemblBacteriaiAAD06201; AAD06201; jhp_0621.
GeneIDi890291.
KEGGihpj:jhp0621.
PATRICi20605953. VBIHelPyl98156_0682.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AE001439 Genomic DNA. Translation: AAD06201.1 .
PIRi F71908.
RefSeqi NP_223339.1. NC_000921.1.
WP_000633948.1. NC_000921.1.

3D structure databases

ProteinModelPortali Q9ZLF9.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 85963.jhp0621.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai AAD06201 ; AAD06201 ; jhp_0621 .
GeneIDi 890291.
KEGGi hpj:jhp0621.
PATRICi 20605953. VBIHelPyl98156_0682.

Phylogenomic databases

eggNOGi COG0209.
KOi K00525.
OMAi EACLMCQ.
OrthoDBi EOG6J48HC.

Enzyme and pathway databases

UniPathwayi UPA00326 .
BioCyci HPYL85963:GJB9-632-MONOMER.

Family and domain databases

InterProi IPR005144. ATP-cone.
IPR013346. NrdE_NrdA.
IPR000788. RNR_lg_C.
IPR013509. RNR_lsu_N.
IPR008926. RNR_R1-su_N.
[Graphical view ]
Pfami PF03477. ATP-cone. 1 hit.
PF02867. Ribonuc_red_lgC. 1 hit.
PF00317. Ribonuc_red_lgN. 1 hit.
[Graphical view ]
PRINTSi PR01183. RIBORDTASEM1.
SUPFAMi SSF48168. SSF48168. 1 hit.
TIGRFAMsi TIGR02506. NrdE_NrdA. 1 hit.
PROSITEi PS51161. ATP_CONE. 1 hit.
PS00089. RIBORED_LARGE. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: J99 / ATCC 700824.

Entry informationi

Entry nameiRIR1_HELPJ
AccessioniPrimary (citable) accession number: Q9ZLF9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 30, 2000
Last sequence update: May 1, 1999
Last modified: September 3, 2014
This is version 103 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Allosteric enzyme, Complete proteome

Documents

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

External Data

Dasty 3

Similar proteinsi