l-proline

L-Proline (proline) is a nonessential amino acid in humans. It is an essential component of collagen and is important for proper functioning of joints and tendons. It also helps maintain and strengthen heart muscles.

cis-L-Hydroxyproline inhibits the synthesis and extracellular deposition of collagen. The growth inhibition of pancreatic cancer cells induced by the Hyp isomer could be due to endoplasmatic reticulum stress.

L-Hydroxyproline (L-Hydroxyprolin) is one of the hydroxyproline (Hyp) isomers. L-Hydroxyproline is a useful chiral building block in the production of many pharmaceuticals.

Brevianamide F (Cyclo(L-Pro-L-Trp)), also known as cyclo-(L-Trp-L-Pro), belongs to a class of naturally occurring 2,5-diketopiperazines. Brevianamide F possess interesting breast cancer resistance protein inhibitory activity.

Cyclo(L-Phe-trans-4-hydroxy-L-Pro) (Cyclo(L-phenylalanyl-trans-4-hydroxy-L-proline)) is a natural product found in Phellinus igniarius.

H-Gly-Pro-OH (Glycyl proline) is a dipeptide composed of glycine and proline, and is an end product of collagen metabolism

Stachydrine (N,N-Dimethyl-L-proline) is a major constituent of Chinese herb leonurus heterophyllus sweet used to promote blood circulation and dispel blood stasis. Stachydrine (N,N-Dimethyl-L-proline) can inhibit the NF-κB signal pathway. Stachydrine (N,N-Dimethyl-L-proline) is a biomarker for the consumption of citrus fruits.

Hygric acid (N-Methyl-L-proline) (N-Methyl-L-proline) is a proline analogue found in the citrus juices and the bergamot juice.

Arecaidine hydrochloride may have carcinogenesis.

Arecaidine hydrobromide, a pyridine alkaloid, functions as a potent GABA uptake inhibitor and acts as a substrate for the H+-coupled amino acid transporter 1 (PAT1, SLC36A1), where it competitively inhibits L-proline uptake [1] [2].

L-Azetidine-2-carboxylic acid ((2S)-azetidine-2-carboxylic acid) is a toxic proline analogue produced by members of the Liliaceae and Agavaciae families.

(R)-pyrrolidine-2-carboxylic acid (D-Proline) is an isomer of the naturally occurring amino acid, L-Proline. D-amino acids have been found in relatively high abundance in human plasma and saliva. These amino acids may be of bacterial origin, but there is also evidence that they are endogenously produced through amino acid racemase activity.

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