d-isomer

D-Cysteine, the D-isomer of cysteine, is a powerful inhibitor of E. coli growth and is mediated by D-amino acid oxidase to produce H2S, serving as a neuroprotective agent against cerebellar ataxia. Additionally, D-cysteine can inhibit the growth and cariogenicity of a two-species biofilm formed by Streptococcus mutans and Streptococcus hemoglobin.

Dihydroartemisinin (mixture of α and β isomers) is a useful organic compound for research related to life sciences. The catalog number is T64399 and the CAS number is 131175-87-6.

(R)-Naroparcil is an isomer of Naroparcil. Naroparcil, a 4-methylumbelliferyl beta-D-xyloside analog, is associated with vascular smooth muscle cell proliferation and inhibits thrombus formation in the Wessler slough model.

D-Mannopyranose is a hexose or fermentable monosaccharide and isomer of glucose from manna, the ash Fraxinus ornus and related plants.

D-Arginine is the D-isomer and inactive form of L-Arginine.D-Arginine is an endogenous metabolite and inhibitor of EC 4.1.1.19 (arginine decarboxylase), has broad-spectrum toxicity to microorganisms, and acts as a regulator of microbial subpopulations.

D-Tagatose (D-(-)-Tagatose), a rare natural hexoketose and isomer of D-galactose, occurs naturally in Sterculia setigera gum and is found in small quantities in various foods such as sterilized and powdered cow's milk, hot cocoa, and various cheeses, yogurts, and other dairy products. It can be synthesized from D-galactose by isomerization under alkaline conditions in the presence of calcium. D-Tagatose has numerous health benefits, including promotion of weight loss, no glycemic effect, anti-plaque, non-cariogenic, anti-halitosis, prebiotic, and anti-biofilm properties; it is beneficial for organ transplants, enhancement of flavor, improvement of pregnancy and fetal development, treatment of obesity, and reduction in symptoms associated with type 2 diabetes, hyperglycemia, anemia, and hemophilia. (PMID: 17492284).

(R)-pyrrolidine-2-carboxylic acid (D-Proline) is an isomer of the naturally occurring amino acid L-Proline. D-amino acids, including D-Proline, are found in relatively high abundance in human plasma and saliva, potentially originating from bacterial sources or endogenous production via amino acid racemase activity.

N-Methyl-D-aspartic acid is an amino acid that, as the D-isomer, is the defining agonist for the NMDA (N-Methyl-D-aspartic acid) receptor subtype of glutamate receptors.

D-Lysine is the D-isomer of L-Lysine, prepared by chemical racemization and microbial asymmetric degradation of L-Lysine.D-Lysine reduces renal uptake of radiolabeled peptides and decreases nephrotoxicity.

D-Tyrosine, the D-isomer of tyrosine, acts as a negative regulator of melanin synthesis by inhibiting tyrosinase activity. Furthermore, D-Tyrosine also inhibits biofilm formation and induces the self-dispersal of biofilms, while not affecting bacterial growth.

trans-Doxercalciferol, an isomer of Doxercalciferol, is a Vitamin D receptor activator that prevents renal disease.

Fmoc-Gly-Gly-D-Phe-OtBu, an ADC cleavable linker, is utilized in the synthesis of antibody-drug conjugates. It is the R-isomer of Fmoc-Gly-Gly-Phe-OtBu [1].

24, 25-Dihydroxy VD2 (24,25-Dihydroxy vitamin D2) is a metabolite of vitamin D2, which is the isomer of vitamin D present in the body as 25-hydroxyvitamin D. PF-04957325 is used in the study of autoimmune encephalomyelitis.

D-methionine sulfoxide hydrochloride is the D-isomer of methionine sulfoxide hydrochloride, the oxidation product of methionine, a restrictive amino acid in milk or legume proteins that is easily oxidized during storage or processing.

(R)-Leucic acid (D-HICA) is a leucine metabolite and an orally active D-isomer of the alpha-hydroxy leucine analogue. It promotes intestinal fatty acid absorption by upregulating CD36, used for lipid metabolism studies.

(2R)-Octyl-α-hydroxyglutarate is a modified derivative of the D-isomer of 2-hydroxyglutarate. (2R)-Octyl-α-hydroxyglutarate can improve adenine-induced arterial calcification in rats and inhibit pancreatic tissue damage, making it suitable for research on vascular calcification (VC) and acute pancreatitis.

D-myo-Inositol-1,3,4,5,6-pentaphosphate (ammonium salt) [Ins(1,3,4,5,6)P5 (ammonium salt)] is an isomer of inositol phosphate that functions as a small, soluble second messenger in cellular signaling. It can bind to the PH domain of Grp1 with a dissociation constant (Kd) of 590 nM. This compound inhibits the phosphorylation and kinase activity of Akt/PKB, leading to apoptosis in ovarian, lung, and breast cancer cells. Additionally, it exhibits anti-angiogenic activity in vitro, blocking capillary formation by HUVECs, and demonstrates antitumor effects in cancer xenograft models in nude mice.

L-Glucose-1-14C is the L-isomer of glucose. It also is the enantiomer of the more common D-glucose.

(-)-L-threo-PDMP is an enhancer of ganglioside biosynthesis. The (-)-L-threo-PDMP (1S,2S) isomer is the active stimulatory component of DL-threo-PDMP in contrast to (+)-D-threo-PDMP , which is an inhibitor of glucosylceramide synthetase. (-)-L-threo-PDMP upregulates GM3, GD3, and GQ1b synthase levels, which are glycosyltransferases involved in ganglioside biosynthesis, and increases ganglioside levels in cells. It increases neurite outgrowth and synapse formation in vitro and improves retention of a long-term memory learned prior to forebrain ischemia in rats when administered following ischemia at a dose of 40 mg/kg per day.

Sphinganine (d20:0) is a natural isomer of dihydro-D-erythro-sphinganine (sphinganine (d18:0); that is a precursor of ceramide and sphingosine as well as a substrate for sphingosine kinases, which generate sphingosine-1-phosphate (d18:1) . In S. cerevisiae, the amount of sphinganine (d20:0) increases 10.8-fold in response to heat stress, indicating it is involved in heat stress adaptation. Sphinganine levels increase significantly in response to certain mycotoxins, including fumonisins as well as in some cancers. Sphinganine can block protein kinase C activation in some cases but not others.

Ins(1,4,5)P3 is an isomer of the biologically important D-myo-inositol-1,4,5-triphosphate. Unlike its isomer, Ins(1,4,5)P3 does not evoke a rise in intracellular calcium when added to cells. It is not known if Ins(1,4,5)P3 can act as a competitive inhibitor of biologically-active inositol phosphates.

Palmitoyl-D-carnitine is a long-chain acylcarnitine, an isomer of palmitoyl-L-carnitine , and the D enantiomer of palmitoyl-DL-carnitine . It inhibits carnitine palmitoyltransferase with a Ki value of 2.1 mM for 14C-palmitoylcarnitine synthesis by erythrocyte membranes.

UDP-β-D-Glucose is the stereoisomer of UDP-α-D-glucose (sodium salt) . The activities of the UDP-β-D-glucose isomer are not known.

D,L-erythro-PDMP, an erythro isomer of PDMP, exhibits growth inhibition on cultured rabbit skin fibroblasts. Additionally, this compound serves as an effective inhibitor of UDP-glucose: ceramide glucosyltransferase.