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Alignment of the repeat region predicted to mediate phase variation within dca from the gonococcal strains FA1090 and FA19 and the meningococcal strains Z2491, MC58, NMB, 2633, and 0929. The frameshift caused by the presence of nine guanines, as in Z2491, MC58, and NMB, brings the underlined termination codon in frame, resulting in a premature termination of the ORF. aa, amino acids.
