2. Metabolic Enzyme/Protease NF-κB Apoptosis
  3. Endogenous Metabolite Keap1-Nrf2 Apoptosis
  4. L-Methionine

L-Methionine is an L-isomer of orally active Methionine, an essential amino acid. Methionine is a strong liver antidote that acts as a liver protector. L-Methionine can inhibit cell proliferation and induce cell apoptosis. L-Methionine has antitumor and antioxidant activity.

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L-Methionine Chemical Structure

L-Methionine Chemical Structure

CAS No. : 63-68-3

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10 mM * 1 mL in Water
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Based on 1 publication(s) in Google Scholar

Other Forms of L-Methionine:

L-Methionine Related Antibodies

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  • Biological Activity

  • Purity & Documentation

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Description

L-Methionine is an L-isomer of orally active Methionine, an essential amino acid. Methionine is a strong liver antidote that acts as a liver protector. L-Methionine can inhibit cell proliferation and induce cell apoptosis. L-Methionine has antitumor and antioxidant activity[1][2][3].

IC50 & Target

Microbial Metabolite

 

Human Endogenous Metabolite

 

In Vitro

L-Methionine (5 mg/mL, 7 or 3 days) can inhibit the proliferation of BXPC-3 (mutant p53) and HPAC (wild-type p53) pancreatic cancer cells, interfere with cell cycle, and induce apoptosis of BXPC-3 cells[1].
L-Methionine (0.3-10 mM, 24 h) reduces the formation of free radicals in endothelial cells by inducing heme oxidase-1 and ferritin[2].

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

L-Methionine Related Antibodies

Cell Proliferation Assay[1]

Cell Line: BXPC-3, HPAC
Concentration: 5 mg/mL
Incubation Time: 7 or 3 days
Result: Reduced growth of BXPC-3 cells by 31 and 32%, respectively.
Reduced growth of HPAC cells by 35% and 18%, respectively.
Reduced S to G2 transition in BXPC-3 cells and intervened in both G1–S and S–G2 transitions in HPAC cells.
Increased late cell apoptosis at a percentage of 76% in BXPC-3 cells.

Western Blot Analysis[2]

Cell Line: ECV304
Concentration: 0.3, 1, 3, 5, 10 mM
Incubation Time: 24 h
Result: Increased the level of HO-1 protein up to 9.5-fold and the HO-1 activity.
In Vivo

L-Methionine (215, 268.8, 322.5, 430 mg/kg, orally, for 14 consecutive days) induces endogenous antioxidant activity by activating the Nrf2-ARE pathway and inhibits ROS-induced oxidative stress in growing rats[3].

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

Animal Model: Male Wistar rats (body weight 70-80 g)[3]
Dosage: 215,268.8, 322.5, 430 mg/kg
Administration: p.o.
Result: Reduced the hepatic ROS levels and the hepatic MDA contents.
Increased the hepatic T-AOC, CAT and T-SOD.
Increased the hepatic activity of GCL, GR, GST and GPx.
Molecular Weight

149.21

Formula

C5H11NO2S
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

N[C@@H](CCSC)C(O)=O
Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

H2O : 10 mg/mL (67.02 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 6.7020 mL 33.5098 mL 67.0196 mL
5 mM 1.3404 mL 6.7020 mL 13.4039 mL
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. 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)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 12.5 mg/mL (83.77 mM); Clear solution; Need ultrasonic and warming and heat to 60°C

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

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
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: 99.60%

COA (244 KB) HNMR (123 KB) RP-HPLC (194 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. 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 6.7020 mL 33.5098 mL 67.0196 mL 167.5491 mL
5 mM 1.3404 mL 6.7020 mL 13.4039 mL 33.5098 mL
10 mM 0.6702 mL 3.3510 mL 6.7020 mL 16.7549 mL
15 mM 0.4468 mL 2.2340 mL 4.4680 mL 11.1699 mL
20 mM 0.3351 mL 1.6755 mL 3.3510 mL 8.3775 mL
25 mM 0.2681 mL 1.3404 mL 2.6808 mL 6.7020 mL
30 mM 0.2234 mL 1.1170 mL 2.2340 mL 5.5850 mL
40 mM 0.1675 mL 0.8377 mL 1.6755 mL 4.1887 mL
50 mM 0.1340 mL 0.6702 mL 1.3404 mL 3.3510 mL
60 mM 0.1117 mL 0.5585 mL 1.1170 mL 2.7925 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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L-Methionine 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:

L-Methionine63-68-3Endogenous MetaboliteKeap1-Nrf2ApoptosisMethionineAntitumorAntioxidantBXPC-3HPACECV304Inhibitorinhibitorinhibit

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