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(A) Similarity of ΦCD119 holin with C. difficile TcdE. (B) Alignment of ΦCD119 ORF 41 with Cdu1 of C. difficile. The sequences were aligned using ClustalW (http://www.ch.embnet.org/software/ClustalW.html) with default settings. Identical and similar amino acids are marked with black and gray, respectively.
