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30089

Sigma-Aldrich

L-Cysteine

≥98.5% (RT), suitable for HPLC, BioUltra

Synonym(s):

(R)-2-Amino-3-mercaptopropionic acid

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250 REACTIONS
CN¥3,107.76
1250 REACTIONS
CN¥14,336.31

CN¥3,107.76

Please contact Customer Service for Availability
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250 REACTIONS
CN¥3,107.76
1250 REACTIONS
CN¥14,336.31

About This Item

Linear Formula:
HSCH2CH(NH2)CO2H
CAS Number:
52-90-4
Molecular Weight:
121.16
Beilstein:
1721408
EC Number:
200-158-2
MDL number:
MFCD00064306
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
57648406
NACRES:
NA.26

CN¥3,107.76

Please contact Customer Service for Availability
New, lower price on this item!
Request a Bulk Order

Product Name

L-Cysteine, BioUltra, ≥98.5% (RT)

product line

BioUltra

Assay

≥98.5% (RT)

form

powder or crystals

optical activity

[α]20/D +8.0±0.5°, c = 5% in 5 M HCl

technique(s)

HPLC: suitable

impurities

insoluble matter, passes filter test
≤0.5% foreign amino acids

ign. residue

≤0.05% (as SO4)

loss

≤0.05% loss on drying, 20 °C (HV)

color

white

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This Item
KCQS00KCQS01KCQS07
KiCqStart® SYBR® Green qPCR ReadyMix™ with ROX™ for ABI instruments

KCQS02

KiCqStart® SYBR® Green qPCR ReadyMix™

KiCqStart® SYBR® Green qPCR ReadyMix™ For Bio-Rad, Cepheid, Eppendorf, Illumina, Corbett, and Roche systems

KCQS00

KiCqStart® SYBR® Green qPCR ReadyMix™

KiCqStart® SYBR® Green qPCR ReadyMix™ Low ROX™, for ABI and Stratagene instruments

KCQS01

KiCqStart® SYBR® Green qPCR ReadyMix™

KiCqStart® One-Step Probe RT-qPCR ReadyMix™ for Bio-Rad, Cepheid, Eppendorf, Illumina, Corbett, and Roche systems

KCQS07

KiCqStart® One-Step Probe RT-qPCR ReadyMix™

form

liquid

form

liquid

form

liquid

form

liquid

usage

sufficient for 1250 reactions

usage

sufficient for 1250 reactions, sufficient for 250 reactions, sufficient for 5000 reactions

usage

sufficient for 1250 reactions, sufficient for 250 reactions, sufficient for 5000 reactions

usage

sufficient for 500 reactions

feature

dNTPs included

feature

dNTPs included, hotstart

feature

dNTPs included, hotstart

feature

dNTPs included, hotstart

storage condition

protect from light

storage condition

protect from light

storage condition

protect from light

storage condition

protect from light

color

colorless

color

colorless

color

colorless

color

light blue

Application

L-Cysteine has been used in quenching of unreacted maleimide during antibody grafting. It has also been used in the preparation of nitrosocysteine stock solution, that has been employed to induce S-nitrosylation to achieve reversible cysteine modification.[1][2]

Biochem/physiol Actions

Cysteine is one of the functional amino acids that regulates metabolism for growth, reproduction, maintenance and immunity. Cysteine provides the disulfide linkage in proteins. It is directly associated with the transport of sulfur. Taurine, a metabolic product of cysteine acts as an antioxidant and controls the cellular redox state. Cysteine is involved in the formation of hydrogen sulfide that is utilized as a signaling molecule.[3]
NMDA glutamatergic receptor agonist.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves
  • Specification Sheet

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    Certificates of Analysis (COA)

    Lot/Batch Number
    BCCM5264
    BCCM1560
    BCCJ9613
    BCCJ8887
    BCCK9781

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    Preparation of polyion complex micelles from poly(ethylene glycol)-block-polyions
    Nuria Bayo-Puxan
    Journal of Controlled Release : Official Journal of the Controlled Release Society, 156(2), 118-127 (2011)
    Resin-assisted enrichment of thiols as a general strategy for proteomic profiling of cysteine-based reversible modifications
    Jia Guo
    Nature Protocols, 9(1), 64-75 (2014)
    Amino acids: metabolism, functions, and nutrition
    Guoyao Wu
    Amino Acids, 37(1), 1-17 (2009)
    Takeshi Annoura et al.
    FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 28(5), 2158-2170 (2014-02-11)
    The 10 Plasmodium 6-Cys proteins have critical roles throughout parasite development and are targets for antimalaria vaccination strategies. We analyzed the conserved 6-cysteine domain of this family and show that only the last 4 positionally conserved cysteine residues are diagnostic
    Georg K A Hochberg et al.
    Proceedings of the National Academy of Sciences of the United States of America, 111(16), E1562-E1570 (2014-04-09)
    Mammalian small heat-shock proteins (sHSPs) are molecular chaperones that form polydisperse and dynamic complexes with target proteins, serving as a first line of defense in preventing their aggregation into either amorphous deposits or amyloid fibrils. Their apparently broad target specificity
    View All Related Papers

    Articles

    Dietary Antioxidants

    Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.

    Chromatograms

    application for HPLC

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