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]: C677T polymorphism of the methylenetetrahydrofolate reductase gene does not affect folic acid, vitamin B12, and homocysteine serum levels in Turkish children with neural tube defects.
[A]: methylenetetrahydrofolate reductase


[Q]: Effect of 5-azacytidine and procainamide on CD3-zeta chain expression in Jurkat T cells.
[A]: CD3-zeta chain


[Q]: Increased Cat3-mediated cationic amino acid transport functionally compensates in Cat1 knockout cell lines.
[A]:
Cat1