Date published: 2026-2-10

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cGKII Activators

cGKII activators are a class of chemical compounds that specifically target and enhance the activity of cyclic GMP-dependent protein kinase II (cGKII), an enzyme that plays a vital role in various cellular signaling pathways. cGKII, also known as PKG2, is one of the two main isoforms of protein kinase G (PKG), a family of serine/threonine kinases that are activated by cyclic guanosine monophosphate (cGMP). cGKII is predominantly expressed in tissues such as the brain, bone, intestine, and kidney, where it regulates a wide array of physiological processes, including ion transport, cell differentiation, and circadian rhythms. The activation of cGKII by specific activators leads to the phosphorylation of target proteins, which then modulate various downstream signaling events within the cell. The mechanism by which cGKII activators enhance the enzyme's activity typically involves increasing the affinity of cGKII for cGMP or stabilizing its active conformation, thereby promoting more efficient phosphorylation of its substrates. This increased kinase activity can influence numerous cellular functions, such as the regulation of ion channels, transporters, and other proteins involved in maintaining cellular homeostasis. Additionally, cGKII activators may modulate the enzyme's role in controlling processes like bone growth, where cGKII is known to be involved in the regulation of chondrocyte differentiation and proliferation. By understanding the specific pathways influenced by cGKII activators, researchers can gain deeper insights into how this kinase contributes to the fine-tuning of cellular signaling networks and the maintenance of physiological balance within various tissues. This knowledge is crucial for comprehending the broader role of cGKII in cellular function and the intricate mechanisms by which it regulates multiple biological processes.

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

8-(4-Chlorophenylthio)guanosine 3′,5′-cyclic Monophosphate sodium salt

51239-26-0sc-202029
sc-202029A
1 mg
5 mg
$46.00
$159.00
(0)

8-(4-Chlorophenylthio)guanosine 3',5'-cyclic Monophosphate sodium salt acts as a potent modulator of intracellular signaling pathways, particularly influencing cyclic nucleotide dynamics. Its unique thioether linkage enhances binding affinity to specific phosphodiesterases, altering reaction kinetics and promoting sustained cGMP levels. This compound exhibits distinct molecular interactions that can lead to differential activation of protein kinases, thereby influencing various cellular processes and responses.

Sp-8-pCPT-cyclic GMPS Sodium

200716-65-0sc-202433
1 mg
$155.00
(0)

Sp-8-pCPT-cyclic GMPS Sodium is a specialized cyclic nucleotide that exhibits unique structural features, including a thioether moiety that enhances its stability and solubility in aqueous environments. This compound engages in selective interactions with target proteins, facilitating the modulation of enzymatic activities. Its distinct conformational flexibility allows for efficient binding to regulatory sites, influencing downstream signaling cascades and promoting specific cellular responses through altered phosphorylation patterns.

8-(4-Chlorophenylthio)guanosine 3′,5′-cyclic Monophosphate triethylammonium salt

54364-02-2sc-202432
sc-202432A
1 mg
5 mg
$42.00
$168.00
(0)

8-(4-Chlorophenylthio)guanosine 3',5'-cyclic Monophosphate triethylammonium salt is a cyclic nucleotide characterized by its thioether linkage, which contributes to its unique reactivity and interaction profile. This compound demonstrates a propensity for forming stable complexes with various protein kinases, thereby influencing their activity. Its distinct electronic properties facilitate rapid conformational changes, enhancing its ability to modulate signaling pathways and affect cellular processes through targeted phosphorylation events.

Tadalafil

171596-29-5sc-208412
50 mg
$180.00
13
(2)

Similar to Sildenafil, Tadalafil functions as a PDE5 inhibitor, increasing cGMP levels in cells, which in turn can lead to the activation of cGKII.

Vardenafil

224785-90-4sc-362054
sc-362054A
sc-362054B
100 mg
1 g
50 g
$526.00
$735.00
$16653.00
7
(1)

Vardenafil is another PDE5 inhibitor that works by elevating cGMP concentrations, indirectly facilitating cGKII activation.

Riociguat

625115-55-1sc-476845
5 mg
$300.00
(0)

Riociguat, a soluble guanylate cyclase stimulator, enhances cGMP synthesis, indirectly promoting cGKII activity.

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin activates adenylyl cyclase, leading to an increase in cAMP, which can influence cGKII activity through cross-talk mechanisms between cAMP and cGMP pathways.

Zaprinast (M&B 22948)

37762-06-4sc-201206
sc-201206A
25 mg
100 mg
$105.00
$250.00
8
(2)

Zaprinast inhibits PDE5 and PDE6, leading to increased cGMP levels and potential activation of cGKII.

Vinpocetine

42971-09-5sc-201204
sc-201204A
sc-201204B
20 mg
100 mg
15 g
$55.00
$214.00
$2400.00
4
(1)

Vinpocetine, a PDE1 inhibitor, can indirectly affect cGKII activity by altering cGMP levels.

Cilostazol

73963-72-1sc-201182
sc-201182A
10 mg
50 mg
$109.00
$322.00
3
(1)

Cilostazol inhibits PDE3 and increases cAMP levels, which can indirectly modulate cGKII activity through interplay between cAMP and cGMP pathways.