| Farnesyltransferase (FT) | Geranylgeranyltransferase I (GGT1) | Geranylgeranyltransferase II (GGT2 or RabGGT) |
Gene name (α subunit) | FNTA | FNTA | RABGGTA |
Gene name (β subunit) | FNTB | PGGT1B | RABGGTB |
Substrate motif | Carboxy-terminal -Ca1a2X box* | Carboxy-terminal -Ca1a2X box* | Carboxy-terminal motif such as -CC, -CXC, -CCX, -CCXX, -CCXXX, or -CXXX†|
Lipid anchor | Farnesyl | Geranylgeranyl | Geranylgeranyl(one or two moieties per substrate) |