Glutamic acid
Appearance
Glutamic acid or glutamate is one of the 20 most common natural amino acids. As its name indicates, it is acidic, with a carboxylic acid component to its side chain.
Besides being used in protein synthesis, glutamate is also known to be an excitatory neurotransmitter.
The sodium salt of glutamic acid, monosodium glutamate (MSG) is responsible for one of the five basic tastes, and MSG is extensively used as a food additive.