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References Suggestions


Standard Name


Gene Synonym(s)

ECK1178, b1190, JW1179, alnA, alnB, dadB, msuA?[1][2], msuA?

Product Desc.


Component of alanine racemase 2, PLP-binding[3]

Alanine racemase; homodimeric[4]

Product Synonyms(s)

alanine racemase 2, PLP-binding[1], B1190[2][1], DadB[2][1], AlnB[2][1], AlnA[2][1], DadX[2][1], alanine racemase[2][1] , alnB, dadB, ECK1178, JW1179, msuA?, b1190

Function from GO

<GO_nr />

Knock-Out Phenotype

ΔdadX fails to grow on L-alanine as sole carbon source. No D-alanine auxotrophy except in the double ΔalrΔdadX mutant. Either Alr or DadX supplies sufficient D-alanine for cell wall biosynthesis.


transcription unit(s): dadAX[2], dad


Induced by L-alanine. Converts L- to D-alanine for catabolism.

Quick Links

porteco.png EcoCyc.gif regulondb.jpg

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

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  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 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 2.7 2.8 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. EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.