4′-Demethylnobiletin is a bioactive metabolite that activates the PKA/ERK/CREB signaling pathway, enhances CRE-mediated transcription in hippocampal neurons, and reverses memory impairment associated with NMDA receptor antagonism by stimulating ERK signaling[1].
Rp-8-CPT-cAMPS sodium, a cAMP analog, is a potent and competitive antagonist of cAMP-induced activation of cAMP-dependent PKA I and II. Rp-8-CPT-cAMPS sodium preferentially selects site A of RI compares to site A of RII and site B of RII compares to site B of RI[1][2].
CCG215022 is a G protein-coupled receptor kinases (GRKs) inhibitor with IC50s of 0.15±0.07 μM, 0.38±0.06 μM and 3.9±1 μM for GRK2, GRK5 and GRK1, respectively.
GSK299115A is a G Protein-coupled Receptor Kinase (GRK) and PKA inhibitor[1].
HA-100 is an inhibitor of cGMP-dependent protein kinase (PKG), cAMP-dependent protein kinase (PKA), Protein kinase C (PKC) and MLC-kinase with IC50s of 4, 8, 12 and 240 μM, respectively.
Daphnetin (7,8-dihydroxycoumarin), one coumarin derivative isolated from plants of the Genus Daphne, is a protein kinase inhibitor, with IC50s of 7.67 μM, 9.33 μM and 25.01 μM for EGFR, PKA and PKC in vitro, respectively[1][2]. Daphnetin (7,8-dihydroxycoumarin) is a secondary metabolite of plants used in folk medicine to counter inflammatory and allergic diseases, also has been clinically used in the treatment of coagulation disorders, rheumatoid arthritis with anti-malarian and anti-pyretic properties[3].
8-Chloro-cAMP is a cAMP analogue that induces growth arrest, and modulates cAMP-dependent PKA activity. 8-Chloro-cAMP has anticancer activity[1].
PKA Inhibitor Fragment (6-22) amide is an inhibitor of cAMP-dependent protein kinase A (PKA), with a Ki of 2.8 nM. PKA Inhibitor Fragment (6-22) amide can significantly reverse low-level morphine antinociceptive tolerance in mice[1][2].
Balanol (Ophiocordin; Azepinostatin) is a potent and ATP competitive PKC/PKA inhibitor against human PKC isozymes α, β-I, β-II, γ, δ, ε, η (IC50s=4-9 nM) and ζ (IC50=150 nM). Balanol also blocks the phosphorylation of cyclic AMP response element-binding protein (CREB) and myristoylated alanine-rich C kinase substrate (MARCKS). Balanol can be isolated from the fungus Verticillium balanoides[1][2].
AT7867 is a potent ATP-competitive inhibitor of Akt1/Akt2/Akt3 and p70S6K/PKA with IC50s of 32 nM/17 nM/47 nM and 85 nM/20 nM, respectively.
Fasudil (HA-1077; AT877) hydrochloride semihydrate is a nonspecific RhoA/ROCK inhibitor and also has inhibitory effect on protein kinases, with an Ki of 0.33 μM for ROCK1, IC50s of 0.158 μM and 4.58 μM, 12.30 μM, 1.650 μM for ROCK2 and PKA, PKC, PKG, respectively. Fasudil hydrochloride semihydrate is also a potent Ca2+ channel antagonist and vasodilator[1][2][3].
Sp-cAMPS, a cAMP analog, is potent activator of cAMP-dependent PKA I 和 PKA II. Sp-cAMPS is also a potent, competitive phosphodiesterase (PDE3A) inhibitor with a Ki of 47.6 µM. Sp-cAMPS binds the PDE10 GAF domain with an EC50 of 40 μM[1][2][3].