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:  The clr1 locus regulates the expression of the cryptic mating - type loci of fission yeast .

A: clr1 locus
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Q:  The Valpha and Vbeta domains have the canonical features of known teleost and mammalian TCR V domains , including conserved residues in the beginning of FR2 and at the end of FR3 .

A: Vbeta domains
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Q:  Internal controls over the volume of milk suckled do not appear until infant rats are about 2 weeks of age at which time gastric distension , milk , systemic dehydration , and intestinal hormone cholecystokinin suppress milk intake derived through suckling .

A:
intestinal hormone cholecystokinin
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