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Genetic structure of the chp locus of L. interrogans. (A) Schematic representation of the chp locus. The arrows for chpI and chpK show their transcription orientation. IRs are boxed. (B) Sequence alignment of the putative ChpK proteins of L. interrogans (Lint), M. tuberculosis (Mtub), B. subtilis (Bsub), and S. aureus (Saur) and of the PemK protein of E. coli (Ecol). Residues conserved in at least three homologous proteins are shaded.
