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.

 The D . discoideum proteins were entirely conserved over the four regions known to be important for GTP binding and all contained the C - terminal CAAX aa motifs shared by other Rho proteins .
Rho proteins

 To probe the inter - relationship between the virion - anchoring function and the oligomerization function , we constructed two serotype 3 ( T3 ) sigma 1 deletion mutants in SV40 expression vectors , one lacking the hydrophobic tail and the hinge , and the other lacking an adjacent region which constituted part of the coiled - coil .
sigma 1

 Deletion mutants of the human CHOP promoter identify a region comprising nucleotides - 75 to - 104 required for both constitutive and ER - stress - inducible expression .

human CHOP promoter