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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Induction of resistance to alkylating agents in E. coli: the ada+ gene product serves both as a regulatory protein and as an enzyme for repair of mutagenic damage.

The expression of several inducible enzymes for repair of alkylated DNA in Escherichia coli is controlled by the ada+ gene. This regulatory gene has been cloned into a multicopy plasmid and shown to code for a 37-kd protein. Antibodies raised against homogeneous O6-methylguanine-DNA methyltransferase (the main repair activity for mutagenic damage in alkylated DNA) were found to cross-react with this 37-kd protein. Cell extracts from several independently derived ada mutants contain variable amounts of an altered 37-kd protein after an inducing alkylation treatment. In addition, an 18-kd protein identical with the previously isolated O6-methyl-guanine-DNA methyltransferase has been identified as a product of the ada+ gene. The smaller polypeptide is derived from the 37-kd protein by proteolytic processing.[1]

References

  1. Induction of resistance to alkylating agents in E. coli: the ada+ gene product serves both as a regulatory protein and as an enzyme for repair of mutagenic damage. Teo, I., Sedgwick, B., Demple, B., Li, B., Lindahl, T. EMBO J. (1984) [Pubmed]
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