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A. Amino acid alignment of nuclear-encoded Psb28 protein (nuPsb28) from the genomic sequence of T. pseudonana with the plastid-encoded homologue (plPsb28). Identical amino acid residues are framed in black, other residues are printed in grey. B. Prediction of targeting sequences in the nuPsb28 using SignalP (signal peptide) and ChloroP (chloroplast transit peptide).
