G protein pathway suppressor 1, or, GPS1, is a human gene. Other names include: COP9 signalosome complex subunit 1; SGN1; Signalosome subunit 1; GPS-1; JAB1-containing signalosome subunit 1; Protein MFH; COP9 signalosome subunit 1; COPS1. The encoded protein has an amino acid length of 491 and a mass of 55.5 kDa. Other isoforms may exist. G protein pathway suppressor 1 is a member of the CSN1 family. This gene shares homology with other species, including: Mouse, Rat, Arabidopsis, Zebrafish, Frog, Chicken.