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 Q]:  A novel serine kinase activated by rac1 / CDC42Hs - dependent autophosphorylation is related to PAK65 and STE20 .
[EX A]: serine kinase

[EX Q]:  Nitroglycerin ( glyceryl trinitrate ) as a monoamine oxidase inhibitor .
[EX A]: monoamine oxidase

[EX Q]:  Detailed analysis of the predicted amino acid sequence revealed sequence elements which are conserved in many DNA and RNA polymerases .
[EX A]:
RNA polymerases