The GYF domain is named because of the presence of Gly-Tyr-Phe residues. The GYF domain is a proline-binding domain in CD2-binding protein Swiss:O95400.

1: The GYF domain is a novel structural fold that is involved in lymphoid signaling through proline-rich sequences. Freund C, Dotsch V, Nishizawa K, Reinherz EL, Wagner G; Nat Struct Biol 1999;6:656-660. PMID:10404223

2: Identification of a proline-binding motif regulating CD2-triggered T lymphocyte activation. Nishizawa K, Freund C, Li J, Wagner G, Reinherz EL; Proc Natl Acad Sci U S A 1998;95:14897-14902. PMID:9843987