PKG inhibitor peptide

Description: Competitive inhibitor of cGMP-dependent protein kinase (PKG), analog of a substrate peptide corresponding to a phosphorylation site of histone H2B. Competes with synthetic substrates (Ki = 86 mM) but does not inhibit phosphorylation of intact histones by PKG. Inhibits phosphorylation of intact histones by PKA. Smiles: C[C@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](N)CCCNC(N)=N)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(O)=O. References: Bhatnagar et al (1988) Synthetic peptide analogues differentially alter the binding affinities of cyclic nucleotide dependent protein kinases for nucleotide substrates. Biochemistry 27 1988 PMID: