pka ii

PKA Regulatory Subunit II Substrate (RII phosphopeptide) is a tool peptide derived from the regulatory subunit Type II (RII) of cyclic adenosine monophosphate-dependent protein kinase (PKA). It is commonly used to simulate the phosphorylation activity of protein kinases and to assess the activity of protein phosphatases by serving as a specific substrate.

Sp-cAMPS sodium salt is an analog of cAMP that serves as a potent activator of cAMP-dependent PKA I and PKA II, and as a competitive phosphodiesterase (PDE3A) inhibitor with a Ki of 47.6 μM. It also binds the PDE10 GAF domain with an EC50 of 40 μM [1] [2] [3].

H-1152 dihydrochloride (H-1152 2HCl) is a specific inhibitor of Rho-associated protein kinase (ROCK) with an IC50 of 12 nM and a Ki of 1.6 nM. H-1152 dihydrochloride inhibits PKA, PKC, PKG, Aurora A and CaMKII with IC50 values of 3.03 μM, 5.68 μM, 0.360 μM, 0.745 μM and 0.180 μM, respectively.

K-252a is a staurosporine analog isolated from Nocardiopsis sp. soil fungi. K-252a inhibits protein kinase (IC50: 470 nM, 140 nM, 270 nM, and 1.7 nM for PKC, PKA, Ca2+ calmodulin-dependent kinase type II, and phosphorylase kinase, respectively).

Rottlerin (NSC-56346) is a natural product purified from Mallotus Philippinensis and is a specific PKC inhibitor (IC50: PKCδ of 3-6 μM, PKCα,β,γ of 30-42 μM, PKCε,η,ζ of 80-100 μM). Rottlerin causes apoptosis via caspase 3 activation.

MLCK inhibitor peptide 18 acetate is a selective competitive inhibitor of myosin light chain kinase (IC50 = 50 nM). Displays 4000-fold selectivity over CaM kinase II and does not inhibit PKA. Cell permeable.

8-MA-cAMP (8-Methylamino-cAMP) is a cyclic adenosine monophosphate analog that acts as a site-selective PKA agonist, exhibiting similar affinity for the B site of both Type I and Type II protein kinase A. When used in conjunction with analogs that preferentially target site A, such as 8-piperidinyl cAMP, 8-MA-cAMP facilitates selective stimulation of Type I enzymes.

Rp-8-CPT-cAMP is a structural combination of the lipophilic and non-hydrolyzable cAMP analogs, 8-CPT-cyclic AMP and Rp-cyclic AMPS .[1] It functions as a site-selective inhibitor of protein kinase A (PKA) type I and II, with preference towards site A of type I and site B of type II.2 By occupying cAMP binding sites at the regulatory subunit of PKA, Rp-8-CPT-cAMP prevents the kinase holoenzyme from dissociative activation.[2],[3]

Rp-cAMPS triethylammonium salt is a competitive inhibitor of cAMP-dependent protein kinases I and II, inhibiting cAMP-induced conformational changes to block PKA activation.

TDZD-8 (NP 01139) is an inhibitor of GSK-3β, with an IC50 of 2 μM; minimal inhibitory effect observed on CDK1, casein kinase II, PKA and PKC.

Rp-8-CPT-cAMPS is a powerful and competitive antagonist of cAMP-induced activation of cAMP-dependent protein kinase (PKA) I and II. Acting as a potent cAMP analog, Rp-8-CPT-cAMPS exhibits a preference for site A of RI over site A of RII. Additionally, it favors site B of RII over site B of RI. This compound effectively inhibits cAMP-dependent PKA activation and demonstrates selectivity in binding to specific sites within the protein kinase.

A-3 hydrochloride is a potent, cell-permeable, reversible, ATP-competitive non-selective antagonist of various kinases. It inhibits PKC and casein kinase I with Ki values of 47 μM and 80 μM, respectively[1], and also inhibits PKA (Ki=4.3 μM), casein kinase II (Ki=5.1 μM), and myosin light chain kinase (MLCK) (Ki=7.4 μM).

AT13148 is an oral-active and ATP-competitive, multi-AGC kinase inhibitor for Akt1 2 3, p70S6K, PKA, and ROCKI II.

Sp-8-CPT-cAMPS is a powerful and specific cAMP analog that activates cAMP-dependent protein kinase A (PKA I and PKA II) selectively and effectively. It exhibits a 153-fold preference for site A of RI over site A of RII, and a 59-fold preference for site B of RII over site B of RI.

Sp-8-pCPT-cGMPS is a potent agonist for cyclic guanosine monophosphate-gated (CNG) channels and serves as a lipophilic activator for PKG (types I α, I β, and II) and PKA II. It exhibits excellent cell membrane permeability and stability against phosphodiesterases. This compound is utilized in studying the role of cGMP in synaptic transmission and neural plasticity.

Selective competitive inhibitor of myosin light chain kinase (IC50 = 50 nM). Displays 4000-fold selectivity over CaM kinase II and does not inhibit PKA. Cell permeable.

Sp-cAMPS triethylamine, a cAMP analog, serves as a potent activator of cAMP-dependent PKA I and II, and acts as a competitive inhibitor of phosphodiesterase (PDE3A) with a K i of 47.6 µM. Additionally, it binds the PDE10 GAF domain with an EC 50 of 40 μM [1] [2] [3].

Urocortin II, mouse, is a selective and potent endogenous peptide agonist for the type-2 corticotropin-releasing factor (CRF2) receptor, displaying K_i values of 0.66 nM for CRFR2 and >100 nM for CRFR1, signifying its high specificity. It engages CRF2 receptors through mechanisms dependent on cAMP PKA and Ca2+ CaMKII. Additionally, Urocortin II, mouse is localized in specific regions of the central nervous system, influencing central neurons that process visceral sensory information and regulate autonomic functions [1] [2] [3].

Rp-cAMPS sodium is a phosphorothioate analog of cAMP, a protein kinase A inhibitor and a membrane-permeable cAMP antagonist that inhibits cAMP-dependent protein kinases by blocking cAMP-induced conformational transitions, and can be used in the study of cardiovascular diseases.

1. Nardosinone has inhibitory effect on Ang II-induced hypertrophy in H9c2 cells, might be mediated by targeting PI3K Akt and MEK ERK signaling pathways. 2. Nardosinone could protect against the neuronal injury exposed to OGD, which may be relevant to the

Two Rho-associated kinases (ROCK), ROCK-I and ROCK-II, act downstream of the G protein Rho to regulate cytoskeletal stability. The ROCKs play important roles in diverse cellular functions including cell adhesion and proliferation, smooth muscle contraction, and stem cell renewal. Glycyl-H-1152 is a selective and potent ROCK inhibitor (IC50 = 11.8 nM for ROCK-II). It is a glycylated isoquinoline compound derived from the therapeutically-important ROCK inhibitor HA-1077 (Fasudil) and exhibits better specificity. Thus, it poorly inhibits Ca2+/calmodulin-dependent kinase type II, protein kinase (PK) G, and Aurora A (IC50 = 2.57, 2.35, and 3.26 μM, respectively) as well as PKA or PKC (IC50 ≥ 10 μM for each). The potency of Glycyl-H-1152 is superior to that of other ROCK inhibitors, including Y-27632 (Ki = 220 nM) and HA-1077 (IC50 = 158 nM).

Rp-8-bromo-Cyclic AMPS (Rp-8-bromo-cAMPS) is a cell-permeable cAMP analog that combines an exocyclic sulfur substitution in the equatorial position of the cyclophosphate ring with a bromine substitution in the adenine base of cAMP. It acts as an antagonist of cAMP-dependent protein kinases (PKAs) and is resistant to hydrolysis by cyclic nucleotide phosphodiesterases. Rp-8-bromo-cAMPS more effectively antagonizes cAMP-dependent activation of purified PKA type I from rabbit muscle than PKA type II from bovine heart.

H-1152 is a potent, specific, ATP-competitive, and cell permeable ROCK inhibitor (Ki = 1.6 nM).

Rp-cAMPS competitively inhibits the cAMP-induced activation of cAMP-dependent protein kinase (PKA).