86555-35-3

Malantide is a synthetic dodecapeptide derived from the site phosphorylated by cAMP-dependent protein kinase (PKA) on the β-subunit of phosphorylase kinase. Malantide is a highly specific substrate for PKA with a Km of 15 μM and shows protein inhibitor (PKI) inhibition >90% substrate phosphorylation in various rat tissue extracts[1]. Malantide is also an efficient substrate for PKC with a Km of 16 μM[2].

[1] Murray KJ, et al. Use of a synthetic dodecapeptide (malantide) to measure the cyclic AMP-dependent protein kinase activity ratio in a variety of tissues. Biochem J. 1990 May 1;267(3):703-8. DOI:10.1042/bj2670703
[2] Z H Zhao, et al. Characterization of a New Substrate for Protein Kinase C: Assay by Continuous Fluorometric Monitoring and High Performance Liquid Chromatography. Biochem Biophys Res Commun. 1991 May 15;176(3):1454-61. DOI:10.1016/0006-291x(91)90450-l