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Sequence alignment of predicted SpcU homologs. (a) Rooted phylogenetic tree with branch lengths of the predicted SpcU homologs; (b) unrooted phylogenetic tree with branch lengths of the predicted SpcU homologs; (c) sequence alignment of predicted SpcU homologs. The phylogenetic trees and the sequence alignment were made by ClustalW with the BLOSUM protein weight matrix (DNA Data Bank of Japan) [48].
