Matsuda T, Seya T, Nagasawa S
Biochem Biophys Res Commun. 1985 Feb 28;127(1):264-9. doi: 10.1016/s0006-291x(85)80153-4.
Location of the disulfide bonds connecting three polypeptide chains (alpha 3, 27kd; 2, 43kd; beta, 75kd) of C3c has been investigated by partial reduction with cysteine followed by alkylation with 14C-monoiodoacetic acid. Treatment of C3c with cysteine produced a partially reduced fragment, composed of disulfide-linked beta and alpha 3 chains. A single thiol residue was detected on the alpha 3 chain but not on the beta chain of the fragment, suggesting that the alpha 2 chain in C3c is linked through a single disulfide bond to the alpha 3 chain but not to the beta chain.
