EOG8NKF8D GO:0017112 1/96 Rab guanyl-nucleotide exchange factor activity molecular_function "Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Rab family. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase." [GOC:mah] EOG8NKF8D GO:0032313 1/96 regulation of GTPase activity biological_process "Any process that modulates the rate of GTP hydrolysis by a GTPase." [GOC:jl, GOC:mah] EOG8NKF8D GO:0016020 1/96 membrane cellular_component "A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it." [GOC:dos, GOC:mah, ISBN:0815316194]