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 inhibition of monoamine oxidase ( MAO ) by tranylcypromine was studied in 6 healthy volunteers given increasing doses of 10 , 15 , 20 and 25 mg / day over a 4 - week period .
[A]: monoamine oxidase


[Q]:  LCCH1 was identical to the Rdl gene , a known GABA receptor subunit gene from D . melanogaster , whereas LCCH2 and LCCH3 were novel D . melanogaster sequences that exhibited structural similarity to other members of the ligand - gated chloride channel gene family .
[A]: Rdl gene


[Q]:  The PK domain showed pairwise in vitro binding interactions with the pseudokinase , HisRS , and C - term domains ; additionally , the HisRS domain interacted with the C - term region .
[A]:
HisRS domain