FIG. 1.

(A) Predicted amino acid sequence of the 5′ portion of secM of E. coli (ec), S. typhi (st), K. pneumoniae (kp), and Y. pestis (yp) utilizing the proposed GUG initiator. The translation start site from the previously proposed AUG initiator is in bold. The predicted new and old signal peptide processing sites are indicated by the slash and double slash, respectively. (B) DNA sequences upstream of the proposed GTG initiator (in bold) of secM. The most conserved portion of the Shine-Dalgarno sequence is aligned above the corresponding region upstream of secM.