The Sec7 domain is a guanine-nucleotide-exchange-factor (GEF) for the Pfam:PF00025 family [2].

1: Structure of the Sec7 domain of the Arf exchange factor ARNO. Cherfils J, Menetrey J, Mathieu M, Le Bras G, Robineau S, Beraud-Dufour S, Antonny B, Chardin P; Nature 1998;392:101-105. PMID:9510256

2: A human exchange factor for ARF contains Sec7- and pleckstrin- homology domains. Chardin P, Paris S, Antonny B, Robineau S, Beraud-Dufour S, Jackson CL, Chabre M Nature 1996;384:481-484. PMID:8945478

3: Triple association of CDC25-, Dbl- and Sec7-related domains in mammalian guanine-nucleotide-exchange factors. Abergel C, Chavrier P, Claverie JM; Trends Biochem Sci 1998;23:472-473. PMID:9868368