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Predicted structure (A) and alignment of the putative pqqA peptide (B) from M. trichosporium OB3b and pqqA peptides from Methylobacterium sp. GXF4, M. extorquens AM1, Hyphomicrobium denitrificans ATCC51888, K. pneumoniae, and A. calcoaceticus. (C) Mapping.
