Date published: 2026-4-24

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EG626682 Activators

Defa28, an alpha-defensin predicted to enable protein homodimerization activity, demonstrates involvement in various crucial processes. These include cellular response to lipopolysaccharide, defense against other organisms, and positive regulation of membrane permeability. Predicted to be active in the extracellular space, Defa28 plays a pivotal role in innate immunity. Activation of Defa28 involves intricate regulatory mechanisms influenced by various chemicals. Histone deacetylase inhibitors like Sodium Butyrate and Trichostatin A modify chromatin acetylation patterns, enhancing Defa28 expression and contributing to the cellular response to lipopolysaccharide. Direct activators such as LPS (Lipopolysaccharide) and Tumor Necrosis Factor-α (TSA) stimulate Defa28, triggering defense responses against other organisms.

Indirect activators like Resveratrol and Quercetin influence cellular responses by activating SIRT1 and AMPK, respectively, leading to the up-regulation of Defa28. Additionally, sodium nitroprusside and valinomycin modulate ion transport, affecting positive regulation of membrane permeability and promoting Defa28 activity. In summary, Defa28 emerges as a key player in innate immunity, responding to a diverse array of chemicals that modulate its expression and activity. The activation mechanisms involve intricate pathways related to cellular response to lipopolysaccharide, defense against other organisms, and positive regulation of membrane permeability. The multifaceted nature of Defa28's functions highlights its significance in the intricate network of innate immune responses.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Sodium Butyrate

156-54-7sc-202341
sc-202341B
sc-202341A
sc-202341C
250 mg
5 g
25 g
500 g
$31.00
$47.00
$84.00
$222.00
19
(3)

Histone deacetylase inhibitor; promotes Defa28 expression by modifying chromatin acetylation patterns, enhancing cellular response to lipopolysaccharide and defense against other organisms in the extracellular space.

Resveratrol

501-36-0sc-200808
sc-200808A
sc-200808B
100 mg
500 mg
5 g
$80.00
$220.00
$460.00
64
(2)

Activates SIRT1; influences cellular response to lipopolysaccharide and positive regulation of membrane permeability, indirectly promoting Defa28.

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)

Direct activator; stimulates cellular response to lipopolysaccharide, triggering Defa28 expression and contributing to defense against other organisms.

Trichostatin A

58880-19-6sc-3511
sc-3511A
sc-3511B
sc-3511C
sc-3511D
1 mg
5 mg
10 mg
25 mg
50 mg
$152.00
$479.00
$632.00
$1223.00
$2132.00
33
(3)

Histone deacetylase inhibitor; enhances Defa28 expression by promoting chromatin acetylation in processes related to cellular response to lipopolysaccharide and defense against other organisms.

Valproic Acid

99-66-1sc-213144
10 g
$87.00
9
(1)

Histone deacetylase inhibitor; modifies chromatin acetylation, indirectly promoting Defa28 in cellular response to lipopolysaccharide and defense against other organisms.

8-Bromo-cAMP

76939-46-3sc-201564
sc-201564A
10 mg
50 mg
$126.00
$328.00
30
(1)

Direct activator; mimics endogenous cAMP, stimulating pathways related to cellular response to lipopolysaccharide and positive regulation of membrane permeability, promoting Defa28.

Sodium nitroprusside dihydrate

13755-38-9sc-203395
sc-203395A
sc-203395B
1 g
5 g
100 g
$43.00
$85.00
$158.00
7
(1)

Releases nitric oxide; influences defense response to other organisms and membrane permeability, indirectly enhancing Defa28.

Quercetin

117-39-5sc-206089
sc-206089A
sc-206089E
sc-206089C
sc-206089D
sc-206089B
100 mg
500 mg
100 g
250 g
1 kg
25 g
$11.00
$17.00
$110.00
$250.00
$936.00
$50.00
33
(2)

Activates AMPK; modulates cellular response to lipopolysaccharide and positive regulation of membrane permeability, indirectly promoting Defa28.

Valinomycin

2001-95-8sc-200991
25 mg
$250.00
3
(1)

Indirect activator; modulates ion transport, influencing positive regulation of membrane permeability and promoting Defa28.

PMA

16561-29-8sc-3576
sc-3576A
sc-3576B
sc-3576C
sc-3576D
1 mg
5 mg
10 mg
25 mg
100 mg
$41.00
$132.00
$214.00
$500.00
$948.00
119
(6)

Activates PKC; influences cellular response to lipopolysaccharide, positively regulating membrane permeability and promoting Defa28.