In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

 Next , to examine the regulation mechanism of CD44 / ERM interaction in vivo , we reexamined the immunoprecipitated CD44 / ERM complex from BHK cells and found that it contains Rho - GDP dissociation inhibitor ( GDI ) , a regulator of Rho GTPase .
Rho GTPase