the mass spectra of the digests of the two interleukin-2 preparations and synthetic peptides with sequences from 117 to 128 and 121 to 128 predicted from the nucleotide sequence of cdna for a human interleukin-2 indicated that cys residues at positions 58 and 105 are linked by a disulfide bond and that the cys residue at position 125 is free .
C0086418
human
C0021756
interleukin-2