Amino acids

L-Isoleucine is an orally active branched chain amino acid, which is the L-enantiomer of isoleucine. L-Isoleucine has a role as a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a plant metabolite, a human metabolite, an algal metabolite and a mouse metabolite. L-Isoleucine regulates the inflammatory response to protect against pathogens in vivo and in vitro.

L-Citrulline is an amino acid derived from ornithine in the catabolism of proline or glutamine and glutamate, or from l-arginine via arginine-citrulline pathway.

L-Tyrosine is a non-essential amino acid which can inhibit citrate synthase activity in the posterior cortex.

L-Valine ((S)-Valine) is a nonlinear semiorganic material. L-Valine causes lipid peroxidation and accumulation of malondialdehyde (MDA), exhibits inhibitory activity against cyanobacteria. L-Valine inhibits multidrug-resistant bacteria through activation of PI3K/Akt signaling pathway and inhibition of arginase.

5-Hydroxytryptophan, a tryptophan metabolite, is a direct 5-hydroxytryptamine (5-HT) precursor and an L-aromatic amino acid decarboxylase substrate. .

L-Asparagine is an essential amino acid for leukemic cells and a substrate for L-Asparaginase. L-Asparaginase is a potent anti-leukemic enzyme that promotes asparagine (Asn) and glutamine (Gln) depletion and inhibits protein biosynthesis in lymphoblasts. Removal of L-asparagine from plasma by L-Asparaginase results in inhibition of RNA and DNA synthesis and subsequent apoptosis. L-Asparaginase has cell-killing ability in vitro and in vivo, and selectively inhibits the growth of cancer cells with low asparagine synthetase (AASNS) expression. L-Asparagine can be used as a biomarker and sensor for the study of childhood acute lymphoblastic leukemia.

L-Cysteine hydrochloride is an orally active conditionally essential amino acid, which acts as a precursor for biologically active molecules such as hydrogen sulphide (H2S), glutathione and taurine. L-Cysteine hydrochloride suppresses ghrelin and reduces appetite in rodents. L-Cysteine hydrochloride inhibits Aspergillus flavus growth and AFB synthesis by disrupting cell structure and antioxidant system balance. L-Cysteine hydrochloride enhances relaxant responses of rat aortic rings to NO and reduces responses to endothelium-derived relaxing factor (EDRF).

L-Alanine is a non-essential amino acid, involved in sugar and acid metabolism, increases immunity, and provides energy for muscle tissue, brain, and central nervous system.

L-Cystine is an orally active extracellular form of L-Cysteine (HY-Y0337), occurring in proteins of plants and animals. L-Cystine elevates Nrf2 protein expression and activates Nrf2 transcription factor. L-cystine reduces ROS generation and protects against oxidant- or Doxorubicin (HY-15142A)-induced apoptosis. L-Cystine combined with L-theanine (HY-15121) enhances the production of antigen-specific IgG by increasing glutathione (GSH) levels and T helper 2 (Th2) mediated responses in mice. L-Cystine is promising for research of cystinuria and kidney stones

Selenomethionine is a naturally occurring amino acid containing selenium that has oral activity and is a common natural food source. Selenomethionine has antitumor activity.

Methionine (MRX-1024; D-Methionine) is an effective chemoprotective agent which can also inhibit the neuronal activity through GABA_A receptor activation.

L-Cystathionine is a nonprotein thioether and is a key amino acid associated with the metabolic state of sulfur-containing amino acids. L-Cystathionine protects against Homocysteine-induced mitochondria-dependent apoptosis of vascular endothelial cells (HUVECs). L-Cystathionine plays an important role in cardiovascular protection.

D-Serine ((R)-Serine), an endogenous amino acid involved in glia-synapse interactions that has unique neurotransmitter characteristics, is a potent co-agonist at the NMDA glutamate receptor. D-Serinee has a cardinal modulatory role in major NMDAR-dependent processes including NMDAR-mediated neurotransmission, neurotoxicity, synaptic plasticity, and cell migration.

L-Theanine (L-Glutamic Acid γ-ethyl amide) is a non-protein amino acid contained in green tea leaves, which blocks the binding of L-glutamic acid to glutamate receptors in the brain, and with neuroprotective, anticancer and anti-oxidative activities. L-Theanine can pass through the blood–brain barrier and is orally active.

Sarcosine (N-Methylglycine), an endogenous amino acid, is a competitive glycine transporter type I (GlyT1) inhibitor and N-methyl-D-aspartate (NMDA) receptor co-agonist. Sarcosine increases the glycine concentration, resulting in an indirect potentiation of the NMDA receptor. Sarcosine is commonly used for the research of schizophrenia.

5-Aminolevulinic acid (5-ALA; δ-Aminolevulinic acid; 5-Amino-4-oxopentanoic acid) is an orally active heme precursor. 5-Aminolevulinic acid promotes aerobic energy metabolism and increases ATP levels by enhancing the activity of cytochrome c oxidase. 5-Aminolevulinic acid enhances LPS-induced proinflammatory cytokine production and gene activation, and restores the phagocytic activity and ROS generation capacity of neutrophils. 5-Aminolevulinic acid selectively accumulates protoporphyrin IX in tumor cells; as a photosensitizer and radiosensitizer, it induces ROS burst upon light or X-ray irradiation to inhibit tumor growth. 5-Aminolevulinic acid can be applied to the research of septic shock, melanoma, and cancer radiotherapy.

L-5-Hydroxytryptophan (L-5-HTP), a naturally occurring amino acid and a dietary supplement for use as an antidepressant, appetite suppressant, and sleep aid, is the immediate precursor of the neurotransmitter serotonin and a reserpine antagonist. L-5-Hydroxytryptophan (L-5-HTP) is used to treat fibromyalgia, myoclonus, migraine, and cerebellar ataxia.

Ectoine is a natural cell protectant, an amino acid derivate produced by bacteria living under extremely harsh environmental conditions. Ectoine serves as an osmoregulatory compatible solute, increasing the hydration of the skin surface and stabilizing lipid layers, which is useful in skincare. Ectoine demonstrates a good safety profile for the treatment of allergic rhinitis.

Phosphocreatine (disodium) is an organic compound found in vertebrate skeletal muscles. Phosphocreatine (disodium) enhances antioxidant activity, and activates the TAK1 pathway to protect the heart. Phosphocreatine (disodium) normalizing mitochondrial function and reducing oxidative stress via Akt mediated Nrf2/HO-1 pathway. Phosphocreatine (disodium) provides renal protection by suppressing Apoptosis and ROS (Reactive Oxygen Species) generation through ERK mediated mediated Nrf-2/HO-1 pathway..

L-lysine hydrochloride is an essential amino acid for humans with various benefits including treating herpes, increasing calcium absorption, reducing diabetes-related illnesses and improving gut health.