Amino Acids (AA)

<p>L-phenylalanine is an amino acid that has a sweet taste. It is one of the 20 amino acids encoded by the universal genetic code, and is classified as a polar amino acid because it has a hydroxyl group on its side chain. L-Phenylalanine is used in the food industry as a sweetener and to enhance salty or acidic flavors. Phenylalanine has been shown to be an important precursor for several important neurotransmitters in the brain. This includes serotonin, dopamine, and norepinephrine. Phenylalanine also plays a role in protein metabolism and enzyme activity, including aminopeptidases and racemases, which are enzymes that catalyze reactions involving racemic mixtures.</p>

<p>Z-Ala-Arg-OH is a low molecular weight carboxylate that has an acidic, hydrophobic side chain. The chemical formula for Z-Ala-Arg-OH is C11H18N4O6. The chemical structure of Z-Ala-Arg-OH can be found in the figure below:<br>Z-Ala-Arg-OH is an ionizable, acidic compound with a pKa of 3.5. The functional groups on Z-Ala-Arg-OH are shown in the figure below:<br>The carboxylate group and the amine group are present in this molecule.<br>Z-Ala-Arg-OH is a transpeptidase, which catalyses the posttranslational modification of proteins by transferring amino acids from one protein to another during translation or after translation. Transpeptidases are important enzymes in bacterial cell wall synthesis because they catalyze peptide bond formation between two amino acid</p>

<p>Angiotensin I/II (3-8) H-Val-Tyr-Ile-His-Pro-Phe-OH is a peptide that has physiological effects and is used as a drug. It is an active analogue of the peptide hormone angiotensin II, which regulates blood pressure and fluid volume. Angiotensin I/II (3-8) H-Val-Tyr-Ile-His-Pro-Phe-OH binds to angiotensin receptors and stimulates the release of calcium ions from cytosolic stores in cells, leading to increased muscle contractions and vasoconstriction. This drug may also have effects on dopamine levels in the brain, locomotor activity, and biochemical properties such as enzyme activity or protein binding.br&gt;<br>Angiotensin I/II (3-8) H-Val-Tyr-Ile-His Pro Phe OH has been shown to reduce the level of dopamine</p>