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.

Using beta 1 - AR - luciferase reporter recombinants , we have previously determined that important beta 1 - AR genetic elements controlling expression within the C6 glioma cell line are contained within the region - 396 to - 299 , relative to the translational start site .
luciferase reporter

Cloning of the GATA - binding protein that regulates endothelin - 1 gene expression in endothelial cells .
endothelin - 1

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