Phylogenic analysis of Bacillus anthracis LytR-CpsA-Psr (LCP) proteins. (A) Predicted domains of B. anthracis LCP proteins. The transmembrane (TM) and LCP domains were predicted using the TMHMM Server v. 2.0 and Clustal W programs. (B) Phylogenetic tree revealing the relatedness of lcp genes from Staphylococcus aureus (blue), Bacillus subtilis (black), and Bacillus anthracis (red). The tree was calculated with Clustal W. B. anthracis lcp gene products were designated LcpB1 (BAS1830), LcpB2 (BAS0572), LcpB3 (BAS0746), LcpB4 (BAS3381), LcpC (BAS5115), and LcpD (BAS5047). (C) Alignment of the LytR-CpsA-Psr domains of LCP proteins from S. aureus, B. subtilis, and B. anthracis using Clustal W. Residues printed in red are conserved in all members of the LytR-CpsA-Psr protein family. Residues in blue are conserved among LcpB proteins of B. anthracis. The symbols denote identical residues in all sequences (*), a highly conserved column (:), and a weakly conserved column (.).