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:  By computed homology search , we noticed significant similarities between US3 PK and p21 - activated kinase ( PAK ) , which is activated by the Cdc42 or Rac .

A: US3 PK
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Q:  Previous studies have shown that the IME1 gene is required for sporulation and the expression of meiosis specific genes in Saccharomyces cerevisiae .

A: IME1 gene
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Q:  The corresponding tetrapeptide sequences SSPD and SATD for human and mouse PKC - epsilon , respectively , are unusual for caspase - 3 .

A:
caspase - 3
****