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.

Ex Input:
 We have used the chloramphenicol acetyltransferase ( CAT ) reporter gene system to study the effect of T on the long terminal repeats ( LTRs ) of a large family of human endogenous retrovirus - like sequences , RTVL - H .

Ex Output:
chloramphenicol acetyltransferase


Ex Input:
 In contrast to the p16 - mediated G1 block , G1 arrest mediated by the cdk inhibitors p21Cip1 or p27Kip1 cannot be bypassed either by inactivation of pRb or overexpression of E2F family members .

Ex Output:
E2F family members


Ex Input:
 Previous studies showed that a palindromic sequence located at - 159 base pairs is essential for induction of cutinase gene in Fusarium solani f .

Ex Output:

cutinase gene