2. Metabolic Enzyme/Protease
  3. Tyrosinase
  4. Cysteine peptide

Cysteine peptide is a tyrosinase inhibitor with skin-whitening, antioxidant and multi-regulatory activities. Cysteine peptide inhibits enzyme activity and blocks melanin transport, effectively reducing UV-B-induced skin erythema and pigmentation. Cysteine peptide synergistically maintains skin health by quenching ROS, resisting oxidative stress and promoting pheomelanin production. Cysteine peptide safely prevents daily ultraviolet damage and supports moderate sun exposure for vitamin D synthesis. Cysteine peptide also acts as a plant signaling factor to regulate vegetative growth, development and stress resistance responses.

For research use only. We do not sell to patients.

Custom Peptide Synthesis

Cysteine peptide

Cysteine peptide Chemical Structure

CAS No. : 845727-64-2

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Based on 1 publication(s) in Google Scholar

Cysteine peptide Related Antibodies

Top Publications Citing Use of Products

  • Biological Activity

  • Purity & Documentation

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Description

Cysteine peptide is a tyrosinase inhibitor with skin-whitening, antioxidant and multi-regulatory activities. Cysteine peptide inhibits enzyme activity and blocks melanin transport, effectively reducing UV-B-induced skin erythema and pigmentation. Cysteine peptide synergistically maintains skin health by quenching ROS, resisting oxidative stress and promoting pheomelanin production. Cysteine peptide safely prevents daily ultraviolet damage and supports moderate sun exposure for vitamin D synthesis. Cysteine peptide also acts as a plant signaling factor to regulate vegetative growth, development and stress resistance responses[1][2].

In Vitro

Cysteine peptides, including γ-glutamylcysteine and cysteinylglycine, contribute to enhanced DPPH radical scavenging capacity relative to an equivalent amount of GSH alone[1].
Tobacco cysteine peptide RALF inhibits root growth and nutrient uptake in tobacco cells[2].
Tomato cysteine peptide LeRALF induces medium alkalinization in tomato cells via receptor binding, with disulphide bridges essential for activity, and binds to cell surface sites with a dissociation value of 0.8×10-9 M[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Cysteine peptide Related Antibodies
Molecular Weight

750.87

Formula

C32H50N10O9S
CAS No.
Appearance

Solid

Color

White to off-white

Sequence

Ac-Arg-Phe-Ala-Ala-Cys-Ala-Ala
Sequence Shortening

Ac-RFAACAA
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

Sealed storage, away from moisture

Powder -80°C 2 years
-20°C 1 year

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

H2O : 3.33 mg/mL (4.43 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.3318 mL 6.6589 mL 13.3179 mL
5 mM --- --- ---
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

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Calculation results:
Working solution concentration: mg/mL
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation

Purity: 99.74%

SDS (252 KB)

COA (245 KB) RP-HPLC (262 KB) MS (68 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
H2O 1 mM 1.3318 mL 6.6589 mL 13.3179 mL 33.2947 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Cysteine peptide Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Cysteine peptide845727-64-2Tyrosinasetomato pollen tubetyrosinaseNeurospora crassaUV-B-induced skin erythemareactive oxygen speciestobacco cellsmelanosomesTorenia fournieriBrassicaArabidopsisInhibitorinhibitorinhibit

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