Given the task definition and input, reply with output. 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.

Acanthamoeba myosin I heavy chain kinase ( MIHCK ) phosphorylates the heavy chains of amoeba myosins I , increasing their actin - activated ATPase activities .
amoeba myosins I