instruction:
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.
question:
The structures of thymidine kinase from herpes simplex virus type 1 in complex with substrates and a substrate analogue.
answer:
thymidine kinase


question:
Synthesis and structure-activity relationships of indazole arylsulfonamides as allosteric CC-chemokine receptor 4 (CCR4) antagonists.
answer:
CC-chemokine receptor 4


question:
Characterization of the molecular mechanisms involved in the increased insulin secretion in rats with acute liver failure.
answer:

insulin