TASK DEFINITION: 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.
PROBLEM:  A novel serine kinase activated by rac1 / CDC42Hs - dependent autophosphorylation is related to PAK65 and STE20 .

SOLUTION: serine kinase

PROBLEM:  We identified two potential phosphorylation sites at serine49 and serine133 , both of which seem to be necessary for Myf - 5 activity .

SOLUTION: Myf - 5

PROBLEM:  Site - directed mutagenesis of the conserved cysteine residue ( tom1C3235A ) in the hect - domain , supposed to be necessary for thioester - bond formation with ubiquitin , abolished the gene function .

SOLUTION:
hect - domain