when bacterially made human normal or oncogenic t24 ras protein is added to 32p-labeled nrk cell membranes in the presence of guanosine 5'- [ gamma-thio ] triphosphate , normal ras protein increases by 3-fold the formation of inositol trisphosphate , whereas t24 ras protein has no significant effect .
C0086418
human
C0034678
ras