The GON domain is found in the ADAMTS (a disintegrin and metalloproteinase domain with thrombospondin type-1 modules) family of proteins. It contains several conserved cysteine residues.

1: Characterization of ADAMTS-9 and ADAMTS-20 as a distinct ADAMTS subfamily related to Caenorhabditis elegans GON-1. Somerville RP, Longpre JM, Jungers KA, Engle JM, Ross M, Evanko S, Wight TN, Leduc R, Apte SS; J Biol Chem. 2003;278:9503-9513. PMID:12514189

2: Identification and characterization of ADAMTS-20 defines a novel subfamily of metalloproteinases-disintegrins with multiple thrombospondin-1 repeats and a unique GON domain. Llamazares M, Cal S, Quesada V, Lopez-Otin C; J Biol Chem. 2003;278:13382-13389. PMID:12562771