Date published: 2025-11-28

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CRB1 Activators

CRB1 activators constitute a category of chemical compounds that are specifically designed to modulate the activity of the protein CRB1 (Crumbs homolog 1), which is a critical component of the Crumbs protein complex. CRB1 is integral to the establishment and maintenance of epithelial cell polarity, and it contributes significantly to the proper formation and function of the adherens junctions in retinal cells. The protein is known to interact with other proteins such as PALS1 and PATJ to form the Crumbs complex, which is essential for the correct localization and functioning of the complex in cellular polarity and tight junction formation.

The activation of CRB1 by these compounds can occur through direct or indirect mechanisms. Direct CRB1 activators bind to CRB1 and induce a conformational change that promotes its interaction with its partner proteins within the Crumbs complex, enhancing their stabilization at the cell membrane and influencing the complex's role in maintaining cellular architecture. By augmenting the proper localization and function of CRB1, direct activators could thereby support the integrity of epithelial layers, such as the retina, and the organization of cellular structures. Indirect CRB1 activators could influence the activity of CRB1 through the regulation of signaling pathways that affect the expression levels of CRB1 or its post-translational modifications. Such modifications could include phosphorylation, ubiquitination, or other molecular alterations that can impact the stability, localization, or protein-protein interactions of CRB1. Additionally, indirect activators might modulate the cellular environment or the activity of other proteins that interact with the Crumbs complex, thereby influencing the function of CRB1 within this complex.

Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Retinoic Acid, all trans

302-79-4sc-200898
sc-200898A
sc-200898B
sc-200898C
500 mg
5 g
10 g
100 g
$65.00
$319.00
$575.00
$998.00
28
(1)

All-trans-retinoic acid is a metabolite of Vitamin A which is known to activate the retinoic acid receptor (RAR). RAR activation can lead to the upregulation of CRB1 through the regulation of gene expression.

25-Hydroxyvitamin D3 monohydrate

63283-36-3sc-238445
sc-238445A
1 mg
2.5 g
$110.00
$4089.00
(1)

25-Hydroxyvitamin D3 is a precursor of the active form of Vitamin D3. Vitamin D3 can regulate gene expression through the vitamin D receptor (VDR). This regulatory action can lead to the upregulation of CRB1.

Dibutyryl-cAMP

16980-89-5sc-201567
sc-201567A
sc-201567B
sc-201567C
20 mg
100 mg
500 mg
10 g
$45.00
$130.00
$480.00
$4450.00
74
(7)

db-cAMP is a cell-permeable cAMP analog that activates protein kinase A (PKA). PKA can then phosphorylate certain proteins that can interact with CRB1, enhancing its functional activity.

Isoproterenol Hydrochloride

51-30-9sc-202188
sc-202188A
100 mg
500 mg
$27.00
$37.00
5
(0)

Isoproterenol is a non-selective beta-adrenergic agonist that increases intracellular cAMP levels. Elevated cAMP levels can activate PKA, which can phosphorylate proteins that interact with CRB1, enhancing its functional activity.

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$76.00
$150.00
$725.00
$1385.00
$2050.00
73
(3)

Forskolin directly stimulates adenylyl cyclase, leading to increased cAMP levels. Elevated cAMP activates PKA, which can phosphorylate proteins that interact with CRB1, enhancing its functional activity.

Sodium Butyrate

156-54-7sc-202341
sc-202341B
sc-202341A
sc-202341C
250 mg
5 g
25 g
500 g
$30.00
$46.00
$82.00
$218.00
19
(3)

Sodium butyrate is a histone deacetylase inhibitor. By inhibiting histone deacetylase, sodium butyrate promotes a more relaxed chromatin state, which can lead to the upregulation of CRB1.

PMA

16561-29-8sc-3576
sc-3576A
sc-3576B
sc-3576C
sc-3576D
1 mg
5 mg
10 mg
25 mg
100 mg
$40.00
$129.00
$210.00
$490.00
$929.00
119
(6)

PMA is an activator of protein kinase C (PKC). PKC can phosphorylate proteins that interact with CRB1, enhancing its functional activity.

Docosa-4Z,7Z,10Z,13Z,16Z,19Z-hexaenoic Acid (22:6, n-3)

6217-54-5sc-200768
sc-200768A
sc-200768B
sc-200768C
sc-200768D
100 mg
1 g
10 g
50 g
100 g
$92.00
$206.00
$1744.00
$7864.00
$16330.00
11
(1)

DHA is an omega-3 fatty acid that can modulate the fluidity of cell membranes, possibly influencing the function of membrane proteins like CRB1.

Curcumin

458-37-7sc-200509
sc-200509A
sc-200509B
sc-200509C
sc-200509D
sc-200509F
sc-200509E
1 g
5 g
25 g
100 g
250 g
1 kg
2.5 kg
$36.00
$68.00
$107.00
$214.00
$234.00
$862.00
$1968.00
47
(1)

Curcumin is an activator of the NRF2 pathway, which can protect cells from oxidative stress. By reducing oxidative stress, curcumin can indirectly enhance the functional activity of CRB1.

Eicosa-5Z,8Z,11Z,14Z,17Z-pentaenoic Acid (20:5, n-3)

10417-94-4sc-200766
sc-200766A
100 mg
1 g
$102.00
$423.00
(0)

EPA is an omega-3 fatty acid that can modulate the fluidity of cell membranes, possibly influencing the function of membrane proteins like CRB1.