TH is the rate-limiting enzyme in the synthesis of the catecholamine neurotransmitters dopamine, epinephrine, and norepinephrine and is responsible for converting L-tyrosine to L-dopa. Synthesis of catecholamines is regulated by the interaction of TH with its cofactor, tetrahydrobiopterin (BH4) and the substrates L-tyrosine and molecular oxygen. In humans four TH mRNA splice variants (hTH1-hTH4) have been isolated while subprimate species rely on a single form of TH. It is known that the hTH1-hTH4 variants are identical in their catalytic domain but differ in their N-terminal regulatory domains. Importantly, LNC1 reacts with the catalytic domain of TH and thus with all four isoforms of human TH. The role of TH in the synthesis of catecholamine neurotransmitters suggests a connection between the enzyme and a number of neuropathogenic diseases characterized by irregular catecholamine levels, such as Parkinsons disease, schizophrenia, and dystonia, as well as a variety of cardiovascular diseases. Applications: Suitable for use in Western Blot, Immunoprecipitation, Immunocytochemistry and Immunohistochemistry. Other applications not tested. Recommended Dilutions: Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
