phosphorylates

Samuraciclib hydrochloride (ICEC0942 hydrochloride) is a potent, selective, ATP competitive and oral active CDK7 inhibitor with IC50 of 41 nM. The selectivity of Samuraciclib hydrochloride is 45-, 15-, 230- and 30-fold higher than CDK1, CDK2 (IC50 is 578 nM), CDK5 and CDK9 respectively. Samuraciclib hydrochloride inhibits the growth of breast cancer cell lines with GI50 values between 0.2-0.3 μM. Samuraciclib hydrochloride has anti-tumor effects.

Cyclin-dependent kinase 5 (Cdk5) is a serine/threonine kinase that is predominantly active in neuronal tissues. With p25 or p35, Cdk5 phosphorylates a range of proteins, including histone H1 and tau. Cdk5 substrate is a synthetic peptide (PKTPKKAKKL) corresponding to a sequence of histone H1. It is phosphorylated by Cdk5 with a Km value of 5 μM.

Cyclin-dependent kinase 5 (Cdk5) is a serine threonine kinase that is predominantly active in neuronal tissues. With p25 or p35, Cdk5 phosphorylates a range of proteins, including histone H1 and tau. Cdk5 Substrate acetate is a synthetic peptide (PKTPKKAKKL) corresponding to a sequence of histone H1. It is phosphorylated by Cdk5 with a Km value of 5 µM.

Mitogen-activated protein kinase 1 (MAPK1) activates the p38 NF-κB pathway and regulates cellular processes in sepsis-associated diseases. Its catalytic action phosphorylates substrate proteins, serving as a regulatory switch for their activity [1].

S3 Fragment is a biologically active peptide featuring the amino-terminal phosphorylation site unique to Xenopus ADF cofilin, which is the target of LIM kinase (LIMK) phosphorylation. LIMK1, a pivotal regulator of the actin cytoskeleton, phosphorylates ADF cofilin at serine-3, leading to its inactivation. As a segment of the S3 peptide harboring the serine-3 sequence, this fragment serves as a widely recognized competitive inhibitor of LIMK1.