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.

Defective processing of the transforming growth factor-beta1 in azoxymethane-induced mouse colon tumors.
transforming growth factor-beta1

Synthesis of derivatives of methyl rosmarinate and their inhibitory activities against matrix metalloproteinase-1 (MMP-1).
matrix metalloproteinase-1

The CRF(1) receptor antagonist SSR125543 prevents stress-induced cognitive deficit associated with hippocampal dysfunction: Comparison with paroxetine and D-cycloserine.
CRF(1) receptor