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.

Q:  Recombinant propeptides containing mutations of one of the three tryptophan residues were three orders of magnitude less effective as inhibitors of mature cathepsin S than the wild - type propeptide .

A: mature cathepsin S
****
Q:  Inhibition of DNA topoisomerase II alpha gene expression by the p53 tumor suppressor .

A: p53 tumor suppressor
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Q:  The yjr041c delta haploid cells gave rise to microcolonies comprising about 20 to 50 cells .

A:
yjr041c delta
****