Date published: 2026-4-24

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GILT Activators

GILT Activators are a class of chemical compounds that influence the intracellular conditions and pathways to enhance the function of GILT, a lysosomal thiol reductase involved in the processing of antigens for presentation by MHC class II molecules. The mechanisms by which these activators function are grounded in their ability to modulate the intracellular environment of the lysosome, where GILT operates, or to influence upstream pathways that affect antigen processing.

Chemicals such as Chloroquine, Bafilomycin A1, and Concanamycin A exert their enhancing effect on GILT by raising the pH within lysosomes, which is an indirect method of maintaining GILT's enzymatic activity, as GILT requires an acidic environment. Similarly, Monensin and Nigericin function as ionophores that disrupt lysosomal ion gradients, leading to pH modifications that can support GILT activity.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Bafilomycin A1

88899-55-2sc-201550
sc-201550A
sc-201550B
sc-201550C
100 µg
1 mg
5 mg
10 mg
$98.00
$255.00
$765.00
$1457.00
280
(6)

Bafilomycin A1 is a specific inhibitor of the V-ATPase proton pump, leading to increased pH in lysosomes. This can indirectly enhance GILT activity by maintaining an environment conducive to its enzymatic activity in antigen processing.

Concanamycin A

80890-47-7sc-202111
sc-202111A
sc-202111B
sc-202111C
50 µg
200 µg
1 mg
5 mg
$66.00
$167.00
$673.00
$2601.00
109
(2)

Concanamycin A, another V-ATPase inhibitor, similarly increases lysosomal pH, potentially enhancing GILT function as it relies on acidic conditions to process antigens for MHC class II presentation.

Zymosan

9010-72-4sc-296863
sc-296863A
100 mg
1 g
$99.00
$599.00
1
(0)

Zymosan activates the complement pathway and can lead to enhanced phagocytosis, thereby potentially increasing the delivery of antigenic materials to lysosomes where GILT processes the antigens.

Lipopolysaccharide, E. coli O55:B5

93572-42-0sc-221855
sc-221855A
sc-221855B
sc-221855C
10 mg
25 mg
100 mg
500 mg
$98.00
$171.00
$425.00
$1560.00
12
(2)

LPS activates the Toll-like receptor 4 (TLR4) pathway leading to the activation of immune cells and potentially increasing the expression and activity of proteins involved in antigen presentation, including GILT.

Monensin A

17090-79-8sc-362032
sc-362032A
5 mg
25 mg
$155.00
$525.00
(1)

Monensin is a carboxylic ionophore that alters intracellular trafficking and lysosomal pH, which may enhance GILT activity by affecting the optimal pH for its enzymatic function in antigen processing.

Nigericin sodium salt

28643-80-3sc-201518A
sc-201518
sc-201518B
sc-201518C
sc-201518D
1 mg
5 mg
25 mg
1 g
5 g
$46.00
$112.00
$240.00
$7079.00
$27417.00
9
(2)

Nigericin is an ionophore that exchanges H+ for K+ across membranes, potentially increasing lysosomal pH and enhancing the activity of GILT within its functional pH range.

Imidazole

288-32-4sc-204776
sc-204776A
sc-204776B
sc-204776C
25 g
100 g
1 kg
5 kg
$27.00
$56.00
$84.00
$343.00
2
(2)

Imidazole is a compound that can buffer cellular pH. By maintaining a slightly acidic pH, it can indirectly maintain the activity of lysosomal enzymes like GILT that are involved in antigen processing.

Leupeptin hemisulfate

103476-89-7sc-295358
sc-295358A
sc-295358D
sc-295358E
sc-295358B
sc-295358C
5 mg
25 mg
50 mg
100 mg
500 mg
10 mg
$73.00
$148.00
$316.00
$499.00
$1427.00
$101.00
19
(3)

Leupeptin inhibits cysteine and serine proteases, potentially increasing the availability of antigenic peptides for GILT-mediated processing by preventing their degradation in lysosomes.