Table 1. Cellular functions and mutation and overexpression incidence rates of G-proteins in human cancers.
Subfamily | Cellular functions | G-protein | Genetic alteration in cancer | Major cancer type | Incidence rates (%) | References |
---|---|---|---|---|---|---|
RAS | Mediate and activate some major pathways
that control cell proliferation, survival, and cell cycle progression [4]. |
KRAS4b | Mutation | Pancreatic cancer | 90 | [28–31] |
Non-small cell lung cancer | 30–35 | |||||
KRAS4a | Colorectal Colon cancer | 30–45 | ||||
HRAS | Mutation | Bladder urothelial | 57 | [32] | ||
NRAS | Mutation | Melanoma | 94 | [33, 34] | ||
Leukemia | 59 | |||||
RHO | Regulate vesicle transport and assembly
and disassembly of actin cytoskeleton required for cell migration and invasion [35]. |
RHOA | Overexpression | Colon | 95 | [35] |
Lung | 95 | |||||
RAC1 | Mutation | Breast | 50 | [14, 33, 36–39] | ||
Overexpression | Breast | 70 | ||||
Lung | 50 | |||||
CDC42 | Overexpression | Breast | 95 | [14, 33, 40] | ||
Colorectal | 60 | |||||
ARF | Regulate different steps in intracellular
membrane transport [7]. |
ARF1-ARF6 | Unknown | – | [7] | |
RAB | Regulate vesicular membrane trafficking
events such as early endosomal membrane tracking, fusion, and sorting [41]. |
RAB5 | Unknown | – | [8, 41, 42] | |
RAN | Facilitates transport into and out
of the nucleus [9]. |
RAN | Unknown | – | [9] |