Bacterial strains, and plasmids used in this study.

<p>Str^r, Km^r, Amp^r, Cm^r, and Tet^r indicate resistant to streptomycin, kanamycin, ampicillin, chloramphenicol, and tetracycline, respectively.</p><p>Y, K, D, R, E, N, and A are amino acids tyrosine, lysine, aspartic acid, arginine, glutamic acid, asparagine, and alanine, respectively.