TAC1
(redirected from tachykinin, precursor 1)TAC1
A gene on chromosome 7q21-q22 that encodes four different tachykinins—substance P, neurokinin A, neuropeptide K and neuropeptide gamma—which are thought to function as neurotransmitters, interacting with nerve receptors and smooth muscle cells, inducing behavioural responses and acting as vasodilators and secretagogues.Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.