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]:  Corresponding enzymatic activity was detectable only for 17 - hydroxysteroid dehydrogenase and 5alpha - reductase , respectively producing testosterone and 5alpha - dihydrotestosterone .
[A]: 5alpha - reductase


[Q]:  Genomic effects are mediated by cytosolic receptors that alter expression of specific genes .
[A]: cytosolic receptors


[Q]:  Furthermore , the correlation between cap formation , IL - 2 production and proliferation supports the hypothesis that an actin - dependent pathway is a source of specialized growth regulatory signals .
[A]:
IL - 2