the results indicated that tissues actively secreting immunoglobulin do not contain a transferase activity adapted specifically for glycosylation of sequences containing cystine residues , and suggested that addition of an n-acetylgalactosamine to a threonine residue in the hinge region of rabbit immunoglobulin takes place during biosynthesis prior to the formation of the inter-chain disulphide bridge of fully assembled immunoglobulins .
C0021027
immunoglobulin
C1302674
chain