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Cysteine thiol probe

  Cat. No.:  DC28784   Featured
Chemical Structure
1947408-74-3
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More than 5000 active chemicals with high quality for research!
Field of application
Cysteine Thiol Probe is a thiol-based probe designed to label electrophilic natural products. Cysteine Thiol Probe possesses each of the characteristics of an ideal pharmacophore probe, and has a chromophore. Cysteine Thiol Probe is capable of engaging enone-, β-lactam-, and β-lactone-based electrophilic metabolites.
Chemicals PropertiesBiological activity COA & MSDSRelated productsDatasheet
Cas No.: 1947408-74-3
Chemical Name: Cysteine thiol probe
SMILES: SC[C@@H](C(OC)=O)NC(C1=CC=C(Br)C=C1)=O
Formula: C11H12BrNO3S
M.Wt: 318.18
Purity: >98%
Sotrage: 2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO
Publication: [1]. Castro-Falcón G, et al. Thiol Probes To Detect Electrophilic Natural Products Based on Their Mechanism of Action. ACS Chem Biol. 2016 Aug 19;11(8):2328-36. [2]. Reimer D, et al. Thiol-Based Probe for Electrophilic Natural Products Reveals That Most of the Ammosamides Are Artifacts. J Nat Prod. 2017 Jan 27;80(1):126-133.
Description: Cysteine Thiol Probe is a thiol-based probe designed to label electrophilic natural products. Cysteine Thiol Probe possesses each of the characteristics of an ideal pharmacophore probe, and has a chromophore. Cysteine Thiol Probe is capable of engaging enone-, β-lactam-, and β-lactone-based electrophilic metabolites[1][2].
In Vitro: Cysteine Thiol Probe (Probe 1) reacts much more readily with β-lactam- and β-lactone-based electrophilic natural products, and its reactivity with epoxide-based electrophilic natural products is poor. And probe 2 reacts much faster with epoxide-containing natural products. This orthogonal reactivity allows them to be employed in extracts simultaneously. Since Cysteine Thiol Probe is brominated and probe 2 is chlorinated, the isotopic patterns of labeled natural products point toward their structural origin. Competition experiments using Cysteine Thiol Probe and 2 indicated that brominated Cysteine Thiol Probe reacted exclusively with the β-lactam in penicillin G and the β-lactone in salinosporamide A while chlorinated probe 2 alone reacted with the epoxide in salinamide A[1].
References: [1]. Castro-Falcón G, et al. Thiol Probes To Detect Electrophilic Natural Products Based on Their Mechanism of Action. ACS Chem Biol. 2016 Aug 19;11(8):2328-36. [2]. Reimer D, et al. Thiol-Based Probe for Electrophilic Natural Products Reveals That Most of the Ammosamides Are Artifacts. J Nat Prod. 2017 Jan 27;80(1):126-133.
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