L-Cysteinesulfinic acid

mGlu and NMDA agonist CAS# 1115-65-7

L-Cysteinesulfinic acid

Catalog No. BCC6571----Order now to get a substantial discount!

Product Name & Size Price Stock
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Chemical structure

L-Cysteinesulfinic acid

3D structure

Chemical Properties of L-Cysteinesulfinic acid

Cas No. 1115-65-7 SDF Download SDF
PubChem ID 1549098 Appearance Powder
Formula C3H7NO4S M.Wt 153.15
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 100 mM in water
Chemical Name (2R)-2-amino-3-sulfinopropanoic acid
SMILES C(C(C(=O)O)N)S(=O)O
Standard InChIKey ADVPTQAUNPRNPO-REOHCLBHSA-N
Standard InChI InChI=1S/C3H7NO4S/c4-2(3(5)6)1-9(7)8/h2H,1,4H2,(H,5,6)(H,7,8)/t2-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of L-Cysteinesulfinic acid

DescriptionAgonist at mGlu1a and mGlu5a subtypes expressed in clonal RGT cell lines. Also agonist at NMDA and PLD-coupled mGlu receptors.

L-Cysteinesulfinic acid Dilution Calculator

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L-Cysteinesulfinic acid Molarity Calculator

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Preparing Stock Solutions of L-Cysteinesulfinic acid

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 6.5295 mL 32.6477 mL 65.2955 mL 130.5909 mL 163.2387 mL
5 mM 1.3059 mL 6.5295 mL 13.0591 mL 26.1182 mL 32.6477 mL
10 mM 0.653 mL 3.2648 mL 6.5295 mL 13.0591 mL 16.3239 mL
50 mM 0.1306 mL 0.653 mL 1.3059 mL 2.6118 mL 3.2648 mL
100 mM 0.0653 mL 0.3265 mL 0.653 mL 1.3059 mL 1.6324 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on L-Cysteinesulfinic acid

L-Cysteinesulfinic acid modulates cardiovascular function in the periaqueductal gray area of rat.[Pubmed:9781935]

J Cardiovasc Pharmacol. 1998 Oct;32(4):650-3.

L-Cysteinesulfinic acid (CSA) involvement in modulating periaqueductal gray (PAG) pressor neurons has been evaluated in the rat. Intra-PAG CSA induced an increase in mean blood pressure partially antagonized by (2S)-alpha-ethylglutamic acid (EGA), a group II metabotropic glutamate receptors (mGluRs) antagonist. Conversely, the NMDA antagonist, DL-AP5, or the mGluRs antagonists, (+)-MCPG, UPF523, or (RS)-alpha-methylserine-O-phosphate (MSOP), were devoid of any activity on the CSA effect. These data show that the excitatory amino acid CSA, probably by stimulating an mGluR, contributes with glutamate in modulating cardiovascular function at the PAG matter.

Sulphur-containing amino acids are agonists for group 1 metabotropic receptors expressed in clonal RGT cell lines.[Pubmed:9681926]

Neuropharmacology. 1998;37(3):277-87.

Comparison of the pharmacological effects of a range of sulphur-containing amino acids on human mGluR1alpha and mGluR5a has been undertaken. cDNAs of each mGluR were transfected into a Syrian hamster tumour cell line AV12-664 that was previously transfected with the rat glutamate-aspartate transporter protein (GLAST). The L-isomers of cysteine sulphinic acid (CSA), homocysteine sulphinic acid (HCSA), cysteic acid (CA) and serine-O-sulphate (SOS) stimulated PI hydrolysis in human mGluR1alpha and mGluR5a cells with full agonist effects. D-CSA, the only active D-isomer, was a partial agonist for mGluR5a whereas L-sulphocysteine (S-CYS) showed weak agonist-like effects at high concentrations on both mGluR1alpha and mGluR5a. L-Homocysteic acid was inactive on both mGluR1alpha and mGluR5a cells. Treatment of mGluR cultures with glutamate pyruvate transaminase did not alter the potencies of the S-amino acids on PI hydrolysis responses. Inhibitor constants (Ki) obtained for L-HCSA, L-CSA, L-CA and L-SOS in [3H]glutamate receptor binding studies with mGluR1alpha cells indicated that L-HCSA, L-CSA, L-CA and L-SOS can bind specifically to mGluR1 with L-HCSA showing the highest affinity. These results confirm that certain endogenously produced S-amino acids may interact directly with group 1 mGluRs.

Sulphur-containing excitatory amino acid-stimulated inositol phosphate formation in primary cultures of cerebellar granule cells is mediated predominantly by N-methyl-D-aspartate receptors.[Pubmed:8008194]

Neuroscience. 1994 Mar;59(2):299-308.

The stimulatory effect of excitatory sulphur-containing amino acids on inositol phosphate formation was investigated in primary cultures of cerebellar granule cells. L-Cysteine sulphinate (CSA), L-cysteate (CA), L-homocysteine sulphinate (HCSA), L-homocysteate (HCA) and S-sulpho-L-cysteine (SSC) dose-dependently stimulated the formation of [3H]inositol phosphates exhibiting EC50 values in the range 60-200 microM and maximal effects of six- to 17-fold that of basal [3H]inositol phosphate levels. Endogenous L-glutamate spontaneously released into the extracellular medium or following exposure of cells to HCSA, HCA or SSC did not contribute significantly to formation of [3H]inositol phosphates, whereas 10% of the total [3H]inositol phosphates accumulated following exposure to CSA and CA was due to released L-glutamate. The selective N-methyl-D-aspartate receptor antagonist, D,L-2-amino-5-phosphonopentanoic acid (APV, 500 microM) attenuated by 20% (HCSA) to between 80 and 100% (CSA, CA, SSC, HCA) the formation of [3H]inositol phosphates induced by 1 mM sulphur-containing amino acids. When, however, HCSA was used at 100 microM (a concentration near to its EC50 for phosphoinositide hydrolysis), APV inhibited induced responses by 70%. Sulphur-containing amino acid-stimulated [3H]inositol phosphate formation was unaffected by the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonist 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX, 10 microM). Inhibition of sulphur-containing amino acid-stimulated [3H]inositol phosphate formation by co-administration of APV and CNQX was similar to that obtained in the presence of APV alone. CSA-, CA-, SSC- and HCA-stimulated [3H]inositol phosphate formation was markedly reduced by removal of Ca2+ from the extracellular medium whereas that stimulated by HCSA was less affected. A similar inhibitory profile was observed when the levels of sulphur-containing amino acid-induced increases in intracellular free calcium ([Ca2+]i) were measured in the presence of 500 microM APV; 1 mM HCSA-induced responses being inhibited by only 30% whereas responses to the remaining sulphur-containing amino acid (also at 1 mM) were inhibited by > 45%. When the sulphur-containing amino acids were used at concentrations approximating their EC50 values for phosphoinositide hydrolysis, APV inhibited the induced increases in [Ca2+]i by 70-100%. HCA and SSC co-administered with the less efficacious but selective metabotropic glutamate receptor agonist, (+-)-1-aminocyclopentane-trans-1,3-dicarboxylic acid (trans-ACPD) at maximally effective concentrations (1 mM) of each agonist stimulated [3H]inositol phosphate formation in an additive manner.(ABSTRACT TRUNCATED AT 400 WORDS)

Description

L-Cysteinesulfinic acid is a potent agonist at several rat metabotropic glutamate receptors (mGluRs) with pEC50s of 3.92±0.03, 4.6±0.2, 3.9±0.2, 2.7±0.2, 4.0±0.2, and 3.94±0.08 for mGluR1, mGluR5, mGluR2, mGluR4, mGluR6, and mGluR8, respectively.

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