Stefek Borkowski wrote:
> Hi,
> Can someone explain how the length of protein sequence, i.e. the number
> of amino acid residues, should be properly counted. I try to assess the
> length of human heart fatty acid binding protein. It is physically built
> of 133 amino acids, but for some reason the literature value is 132. It
> seems like the paper purposely omits the first methionine. Also the
> numbering of amino acids goes this way, as if the starting methionine is
> not present. Would you please comment on this. Thank you in advance.
> Regards,
> Stefek
Sometimes the first amino acid is removed proteolytically after the
protein is produced.
Scott.
