Genome-wide analysis reveals the functional and expressional correlation between RhoGAP and RhoGEF in mouse

Rho GTPases play essential roles in various life activities. Rho GTPase-activating protein (RhoGAP) and Rho guanine nucleotide exchange factor (RhoGEF) are the main regulators of Rho GTPases. RhoGAP, RhoGEF and Rho make up a molecular switch and exert crucial roles in signaling pathways. The genome-wide studies can provide us a comprehensive information of special protein family, but the genome-wide information of RhoGAP and RhoGEF families are still lacking in the mammal lineage. Here, we report the correlations between mouse RhoGAPs and RhoGEFs in gene quantities, evolution, molecular function, and their expression levels in heart embryonic development and cardiovascular medicine treatment at genome-wide scale. Besides, we find that the 3D structures of RhoGAP domains between different species are highly conserved, but that of RhoGEF domains are variable between species. Our present study contributes to a better understanding of the complex regulation mechanisms of RhoGAP and RhoGEF families.