Comparison of the P. gingivalis rag locus with Bacteroides Sus. a, b Multiple amino acid sequences alignment between the P. gingivalis RagA locus with Bacteroides SusC. The asterisks indicate positions within the proteins that were identical. The carboxypeptidase regulatory region, TonB-dependent receptor plug Domain, TonB-dependent receptor, lipoprotein, and RagB/SusD domains are shown