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.

[EX Q]: Adipose tissue as a source of nicotinamide N-methyltransferase and homocysteine.
[EX A]: nicotinamide N-methyltransferase

[EX Q]: A novel mutation of the erythroid-specific gamma-Aminolevulinate synthase gene in a patient with non-inherited pyridoxine-responsive sideroblastic anemia.
[EX A]: erythroid-specific gamma-Aminolevulinate synthase

[EX Q]: Metformin and phenformin activate AMP-activated protein kinase in the heart by increasing cytosolic AMP concentration.
[EX A]:
AMP-activated protein kinase