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Standard Name


Gene Synonym(s)

ECK0448, b0454, JW0444[1], JW0444

Product Desc.

putative methyltransferase[2]; predicted methyltransferase[3]

Binds DNA with O(6)-meG or an abasic site; physiological role unknown[4]

Product Synonyms(s)

predicted methyltransferase[1], YbaZ[2][1], B0454[2][1] , ECK0448, JW0444, b0454

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): ybaZ[2]

Quick Links


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YbaZ is homologous to methylated-DNA--protein-cysteine methyltransferases Ada and Ogt, but lacks the active site cysteine. YbaZ binds O(6)-alkylguanine residues in DNA and blocks alkyltransferase action; YbaZ does not remove methyl groups from O(6)-methylguanine-containing DNA nor does it have glycosylase or endonuclease activity (Margison, 2007). YbaZ preferentially binds DNA with an abasic site, has base-flipping activity, and binds HelD (Chen, 2008).[4]


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  1. 1.0 1.1 1.2 1.3 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 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. 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.