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: Amino acid residues at the N- and C-termini are essential for the folding of active human butyrylcholinesterase polypeptide.

SOLUTION: human butyrylcholinesterase

PROBLEM: Anabolic effects of clenbuterol on skeletal muscle are mediated by beta 2-adrenoceptor activation.

SOLUTION: beta 2-adrenoceptor

PROBLEM: The dextromethorphan analog dimemorfan attenuates kainate-induced seizures via sigma1 receptor activation: comparison with the effects of dextromethorphan.

SOLUTION:
sigma1 receptor

