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 potent Chk1 inhibitor is selectively cytotoxic in melanomas with high levels of replicative stress.

SOLUTION: Chk1

PROBLEM: Cloning, characterization, and expression of a calcitonin receptor from guinea pig brain.

SOLUTION: calcitonin receptor

PROBLEM: Enzymatic and biochemical properties of a novel human serine dehydratase isoform.

SOLUTION:
human serine dehydratase