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How are amino acid residues on proteins numbered?
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Being of limited formal education in molecular biology, this has me stumped.
For example, bovine serum albumin has 35 cysteine residues. Cys-34 is free. Why is it numbered 34? From the FASTA sequence, the free residue resides in position 58 of the ~ 582 amino acids, and is the first cysteine in the sequence. I'll accept Cys-1 or Cys-35, but 34?
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