Thrombospondin 3 is a pentameric molecule held together by interchain disulfide linkage involving two cysteine residues.
Qabar, A, L Derick, J Lawler, and V Dixit. 1995. “Thrombospondin 3 Is a Pentameric Molecule Held Together by Interchain Disulfide Linkage Involving Two Cysteine Residues.”. The Journal of Biological Chemistry 270 (21): 12725-9.