Recombinant Escherichia coli Ribonucleoside-diphosphate reductase 1 subunit alpha(nrdA)

Code CSB-EP355522ENV
Size US$388
  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Greater than 90% as determined by SDS-PAGE.
Target Names
Uniprot No.
Research Area
Alternative Names
nrdA; dnaF; b2234; JW2228; Ribonucleoside-diphosphate reductase 1 subunit alpha; EC; Protein B1; Ribonucleoside-diphosphate reductase 1 R1 subunit; Ribonucleotide reductase 1
Escherichia coli (strain K12)
Expression Region
Target Protein Sequence
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
Protein Length
Full Length
Tag Info
N-terminal 6xHis-SUMO-tagged
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.

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Target Background

Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides. R1 contains the binding sites for both substrates and allosteric effectors and carries out the actual reduction of the ribonucleotide. It also provides redox-active cysteines.
Gene References into Functions
  1. Elimination of 6 helicases lowered NrdA production further, whereas overexpression of any RNA helicase partially reversed the downregulation. UV stress completely reversed down-regulation of NrdA production PMID: 26574793
  2. The present results identifying a large, new set of E. coli mutator strains with mutations of nrdAB ribonucleotide reductase(RNR)confirm the important control that RNR exerts on the cellular mutation rate and provide novel insights into the RNR feedback regulatory mechanisms. PMID: 22417940
  3. RNR101 is unstable at 42 degrees C ; its degradation is prevented by rifampicin; inactivation of DnaA protein by allows chromosome replication in absence of rifampicin and suppresses nucleoid segregation and cell division defects seen in nrdA101 mutant at 42 degrees C PMID: 21527473
  4. The report three independent methods that establish that Y(356) is the predominant location (85-90%) of the radical, with the remaining 10-15% delocalized onto Y(731) and Y(730) in alpha2. PMID: 21967342
  5. The authors propose that RecA is required to maintain the integrity of the reversed forks in the nrdA101 mutant under certain restrictive conditions, supporting the relationship between DNA replication and recombination enzymes. PMID: 21441507
  6. The authors show that the binding of DnaA on the NrdAB promoter can either activate or repress transcription as a function of its concentration and its nucleotide-bound state. PMID: 20487274
  7. analysis of key residues in the dimerization process of ribonucleotide reductase protein R1 PMID: 15699052
  8. There is an indirect relationship between NDP reductase and the chromosome segregation machinery through the maintenance of the proposed replication hyperstructure. PMID: 17124544
  9. it is proposed that an altered NDP reductase, as a component of the replication machinery, impairs the progression of the replication fork, contributing to the lengthening of the C period in the nrdA101 mutant at the permissive temperature PMID: 17322311

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Protein Families
Ribonucleoside diphosphate reductase large chain family
Database Links
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