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

Mutant analysis shows that alanine racemases from Pseudomonas aeruginosa and Escherichia coli are dimeric.

Alanine racemases are ubiquitous prokaryotic enzymes providing the essential peptidoglycan precursor D-alanine. We present evidence that the enzymes from Pseudomonas aeruginosa and Escherichia coli function exclusively as homodimers. Moreover, we demonstrate that expression of a K35A Y235A double mutation of dadX in E. coli suppresses bacterial growth in a dominant negative fashion.[1]


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