The Substrate Specificity of Adenosine 3':5'-cyclic Monophosphate-dependent Protein Kinase of Rabbit Skeletal Muscle
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The known amino acid sequences at the two sites on phosphorylase kinase that are phosphorylated by cyclic AMP-dependent protein kinase were extended. The sequences of 42 amino acids around the phosphorylation site on the alpha-subunit and of 14 amino acids around the phosphorylation site on the beta-subunit were shown to be: alpha-subunit Phe-Arg-Arg-Leu-Ser(P)-Ile-Ser-Thr-Glu-Ser-Glx-Pro-Asx-Gly-Gly-His-Ser-Leu-Gly-Ala-Asp-Leu-Met-Ser-Pro-Ser-Phe-Leu-Ser-Pro-Gly-Thr-Ser-Val-Phe(Ser,Pro,Gly)His-Thr-Ser-Lys; beta-subunit, Ala-Arg-Thr-Lys-Arg-Ser-Gly-Ser(P)-VALIle-Tyr-Glu-Pro-Leu-Lys. The sites on histone H2B which are phosphorylated by cyclic AMP-dependent protein kinase in vitro were identified as serine-36 and serine-32. The amino acid sequence in this region is: Lys-Lys-Arg-Lys-Arg-Ser32(P)-Arg-Lys-Glu-Ser36(P)-Tyr-Ser-Val-Tyr-Val- [Iwai, K., Ishikawa, K. & Hayashi, H. (1970) Nature (London) 226, 1056-1058]. Serine-36 was phosphorylated at 50% of the rate at which the beta-subunit of phosphorylase kinase was phosphorylated, and it was phosphorylated 6-7-fold more rapidly than was serine-32. The amino acid sequences when compared with those at the phosphorylation sites of other physiological substrates suggest that the presence of two adjacent basic amino acids on the N-terminal side of the susceptible serine residue may be critical for specific substrate recognition in vivo.
Protein kinase A catalytic subunit isoform PRKACA; History, function and physiology.
Turnham R, Scott J Gene. 2015; 577(2):101-8.
PMID: 26687711 PMC: 4713328. DOI: 10.1016/j.gene.2015.11.052.
Identification of autophosphorylation sites in eukaryotic elongation factor-2 kinase.
Pyr Dit Ruys S, Wang X, Smith E, Herinckx G, Hussain N, Rider M Biochem J. 2012; 442(3):681-92.
PMID: 22216903 PMC: 3286862. DOI: 10.1042/BJ20111530.
Interaction sites on phosphorylase kinase for calmodulin.
Heilmeyer Jr L, Gerschinski A, Meyer H, Jennissen H Mol Cell Biochem. 1993; 127-128:19-30.
PMID: 7935351 DOI: 10.1007/BF01076754.
Gard D, Lazarides E Proc Natl Acad Sci U S A. 1982; 79(22):6912-6.
PMID: 6294666 PMC: 347244. DOI: 10.1073/pnas.79.22.6912.
cDNA clone coding for part of a mouse H-2d major histocompatibility antigen.
Kvist S, Bregegere F, Rask L, Cami B, Garoff H, Daniel F Proc Natl Acad Sci U S A. 1981; 78(5):2772-6.
PMID: 6265910 PMC: 319439. DOI: 10.1073/pnas.78.5.2772.