Date published: 2026-7-20

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GCL Activators

GCL (Glutamate-Cysteine Ligase) activators modulate the activity of the enzyme glutamate-cysteine ligase (GCL). This enzyme plays a pivotal role in the cellular antioxidant defense system by catalyzing the rate-limiting step in the synthesis of glutathione, a crucial intracellular thiol molecule. Glutathione is renowned for its significance in maintaining redox homeostasis within cells, detoxifying harmful reactive oxygen species (ROS), and safeguarding against oxidative stress-induced damage. GCL activators amplify the production of glutathione by facilitating the activity of GCL, hence fortifying the cell's defenses against oxidative stress.

Chemically, GCL activators can encompass a diverse array of small molecules or compounds, each with its unique structural features and mechanisms of action. These activators typically exert their influence on GCL through various pathways, including direct binding to the enzyme or modulation of its transcription and translation. The net effect of GCL activation is an upsurge in the cellular levels of glutathione, which, in turn, enhances the cell's ability to counteract oxidative insults.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

N-Acetyl-L-cysteine

616-91-1sc-202232
sc-202232A
sc-202232C
sc-202232B
5 g
25 g
1 kg
100 g
$34.00
$74.00
$270.00
$114.00
34
(1)

NAC is a precursor to cysteine, enhancing its availability as a substrate for GCL and promoting glutathione synthesis.

L-Cysteine

52-90-4sc-286072
sc-286072A
sc-286072B
sc-286072C
sc-286072D
25 g
100 g
500 g
5 kg
10 kg
$51.00
$112.00
$449.00
$1151.00
$2178.00
1
(1)

L-Cysteine is a direct precursor to glutathione, serving as a substrate for GCL and facilitating glutathione synthesis.

Glutathione, reduced

70-18-8sc-29094
sc-29094A
10 g
1 kg
$82.00
$2091.00
8
(2)

GSH can act as a feedback activator by providing reduced glutathione, signaling the need for more glutathione and enhancing GCL activity.

Cysteamine

60-23-1sc-217991
sc-217991A
sc-217991B
5 g
25 g
50 g
$89.00
$238.00
$442.00
1
(1)

Cysteamine, structurally related to cysteine, supplies cysteine as a precursor, supporting GCL in generating glutathione.

L-Methionine

63-68-3sc-394076
sc-394076A
sc-394076B
sc-394076C
sc-394076D
sc-394076E
25 g
100 g
250 g
1 kg
5 kg
10 kg
$34.00
$37.00
$57.00
$151.00
$577.00
$1103.00
(0)

Methionine indirectly influences GCL activity by participating in the transsulfuration pathway, contributing to cysteine availability.

Homocysteine

6027-13-0sc-507315
250 mg
$195.00
(0)

Homocysteine impacts GCL activity indirectly through the transsulfuration pathway, influencing cysteine availability.

Ademetionine

29908-03-0sc-278677
sc-278677A
100 mg
1 g
$184.00
$668.00
2
(1)

SAMe indirectly affects GCL activity by modulating cysteine availability through its involvement in the transsulfuration pathway and methionine metabolism.

α-Lipoic Acid

1077-28-7sc-202032
sc-202032A
sc-202032B
sc-202032C
sc-202032D
5 g
10 g
250 g
500 g
1 kg
$69.00
$122.00
$212.00
$380.00
$716.00
3
(1)

Alpha-lipoic acid is an antioxidant that may maintain glutathione levels and indirectly support GCL activity by protecting against oxidative stress.