Ribosomal protein L22 polymorphisms among Brucella reference strains and three marine isolates. The putative peptide sequence of L22 is underlined, parentheses bracket polymorphic sites and list amino acids found among L22 peptides at that site. In regions where sequence was variable, the sequence for each putative Brucella L22 is given below. Amino acids occurring in the stalk of the β-hairpin appear in bold-italicsand amino acids occurring in the loop of the β-hairpin are in bold. Beneath amino acids that are double underlined is a list of Brucella strains containing those aa. The single letter code is used to denote the putative aa sequence of the peptides; b = biovar and numbers following "b" designate biovar numbers. Accession numbers of rplV sequences for each strain are deposited in GenBank and are listed in Materials.