The official name of NR4A2 gene is "nuclear receptor subfamily 4, group A, member 2". The MSH6 gene provides instructions for making a member of steroid-thyroid hormone-retinoid receptor superfamily. that may plays a role as a Trascription factor. This protein found in the brain and the adrenal gland (the hormone-producing gland located on top of each kidney). In the brain, the NR4A2 protein plays a key role in prompting certain nerve cells to specialize (differentiate) and produce a chemical messenger called dopamine. Dopamine transmits messages that help the brain control physical movement and emotional behavior.