Synthetic peptide substrates for casein kinase II

Marshak, D. R., Carroll, D. (1991) Synthetic peptide substrates for casein kinase II. Methods Enzymol, 200. pp. 134-56. ISSN 0076-6879 (Print)0076-6879 (Linking)

DOI: 10.1016/0076-6879(91)00135-J


Synthetic peptide substrates for CKII are useful reagents in the analysis of phosphorylation sites when used in conjunction with biochemical and genetic analysis of the protein substrates for the enzyme. A multidisciplinary approach should be applied to the characterization of the synthetic peptide products, including amino acid analysis, sequencing, and mass spectrometry. Synthetic procedures for CKII substrate peptides often result in anisole adducts and dehydrated forms. Mass spectrometry is invaluable in identifying these contaminants, and preparative HPLC can be used to separate them from the desired product. Quantitative analysis of the CKII phosphorylation of peptides can utilize phosphocellulose paper if the peptide has a basic sequence, or thin-layer chromatography, if the peptide has no basic portion. Qualitative analysis using electrophoresis and mass spectrometry help to establish the stoichiometry of phosphorylation. Sequence analysis of phosphoserine after beta elimination and derivatization is useful in quantifying adjacent phosphorylation sites. Overall, application of a variety of techniques permits detailed analysis of CKII phosphorylation sites on synthetic peptides that are model substrates.

Item Type: Paper
Uncontrolled Keywords: Adenosine Triphosphate/metabolism Amino Acid Sequence Animals Casein Kinases Chromatography, High Pressure Liquid/methods Drug Design Kinetics Mass Spectrometry/methods Molecular Sequence Data Oncogene Proteins/metabolism Peptides/*chemical synthesis/metabolism Phosphorus Radioisotopes Protein Kinases/*analysis/metabolism Radioisotope Dilution Technique Substrate Specificity
Subjects: bioinformatics > genomics and proteomics > design > protein network design > peptide design
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > enzymes > kinase
CSHL Authors:
Communities: CSHL labs
Depositing User: Matt Covey
Date: 1991
Date Deposited: 09 Dec 2015 21:17
Last Modified: 09 Dec 2015 21:17
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