aromatic amino acid


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aromatic amino acid

[¦ar·ə¦mad·ik ə′mēn·ō ′as·əd]
(biochemistry)
An organic acid containing at least one amino group and one or more aromatic groups; for example, phenylalanine, one of the essential amino acids.
References in periodicals archive ?
Dietary requirement of milkfish (Chanos chanos Forsskal) juvenile for total aromatic amino acids. Aquaculture 12:309-317.
As mentioned above, many amino acids, for example, BCAAs and aromatic amino acids, share the same amino acid transporter for transport across the blood-brain barrier.
coli via the overexpression of biosynthetic enzymes (TKT, transketolase; PEPS, phosphoenolpyruvate synthetase; fbr-DAHPS, feedback-inhibition-resistant 3-deoxy-d-arabino-heptulosonate-7-phosphate synthase; fbr-CM/PD, feedback-inhibition-resistant chorismate mutase/prephenate dehydrogenase and deletion of the repressor of aromatic amino acid biosynthesis; tyrR), and then modified the pathway to produce dopamine from tyrosine with the introduction of pathway-specific tyrosinase (TYR) of R.
Aromatic Amino Acids. Aromatic residues have been long assumed to lead to better thermostability of protein as weak polar interaction made by the aromatic ring of residues in phenylalanine is of enthalpic importance when compared to that of/with hydrogen bonding [39].
Jiangping, Determination of Aromatic Amino Acids in Serum by High Performance Liquid Chromatography and Its Clinical Application, Central South University, 2003.
The level of aromatic amino acids was significantly higher in Siberian sturgeon muscle tissue (7.81 g) than in the muscle tissue of the other fish species (7.23-7.37 g).
Comment: Previous research has found that plasma concentrations of BCAAs are low and concentrations of aromatic amino acids (phenylalanine, tyrosine, and tryptophan) and methionine are increased in patients with cirrhosis and hepatic encephalopathy.
Another point of the NRC (2012) model is that it considers that, with an increase in the pig's age, increasing competition occurs for aromatic amino acids with branched-chain amino acids (BCAA) like leucine, isoleucine and valine.
Well-validated markers of diabetic risk such as branched-chain and aromatic amino acids provide additional information on potential underlying pre-diabetes, which can subsequently be addressed to reduce future risk.
As a descaling agent, glyphosate enters the bacterial or plant cells and steals the atom of manganese from the EPSPS enzyme, rendering it unable to synthesize aromatic amino acids. If some of these building blocks are missing, the bacteria and plants can't synthesize the proteins, and they promptly die.