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References Suggestions


Standard Name


Gene Synonym(s)

ECK2226, b2234, JW2228, dnaF[1], dnaF

Product Desc.


Component of B1 protein[2][3]; ribonucleotide reductase I[2]

Ribonucleoside diphosphate reductase, subunit alpha; class I, aerobic; ribonucleotide reductase; B1 protein, R1 subunit[4]

Product Synonyms(s)

ribonucleoside diphosphate reductase 1, alpha subunit[1], B2234[2][1], DnaF[2][1], NrdA[2][1] , dnaF, ECK2226, JW2228, b2234

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): nrdAB[2], OP00063, nrd, nrdA

Quick Links

porteco.png EcoCyc.gif regulondb.jpg

dnadisplay.png proteindisplay.png   pubmed.jpg   textpresso.jpg  

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Reducing equivalents provided by glutaredoxin or thioredoxin. Binds TrxA (Kumar, 2004). About half of the overproduced protein has the first one or two amino acids removed. E. coli B native protein is reported to start with Gln. a second native E. coli B protein start may correspond to a cleavage after Leu26. Leu26 CTG codon is unlikely to be an alternative start codon in K-12 or B and no evidence of this cleavage or an alternative start codon was seen with the overproduced K-12 protein. An M-N or MN-Q cleavage by MAP would be unusual. The variable N-termini may be created by an unknown protease.[4]


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  1. 1.0 1.1 1.2 1.3 1.4 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. 3.0 3.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  4. 4.0 4.1 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.