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Protein kinase C in yeast. Characteristics of the Saccharomyces cerevisiae PKC1 gene product. 1994

B Antonsson, and S Montessuit, and L Friedli, and M A Payton, and G Paravicini
Glaxo Institute for Molecular Biology, Plan-les-Ouates, Geneva, Switzerland.

The Saccharomyces cerevisiae PKC1 gene encodes a homolog of mammalian protein kinase C (Levin, D. E., Fields, F.O., Kunisawa, R., Bishop, J.M., and Thorner, J. (1990) Cell 62, 213-224). A protein of 150 kDa is recognized by a polyclonal antiserum raised against a trpE-Pkc1 fusion protein. In subcellular fractionations, Pkc1p associates with the 100,000 x g particulate fraction. This association is resistant to extraction with high salt concentrations, alkali buffer, or nonionic detergents, suggesting that Pkc1p may be associated with a large protein complex. Pkc1p modified at its COOH terminus with two repeats of the Staphylococcus aureus protein A IgG-binding fragment (ZZ sequence tag) was able to fully restore the growth defects of a pkc1ts strain at restrictive temperature. ZZ-tagged Pkc1p was partially purified by chromatography on DEAE-Sepharose, followed by IgG-Sepharose. In vitro, Pkc1p phosphorylates the pseudosubstrate peptide and myelin basic protein, but not histones. Replacing an isoleucine with an arginine 2 amino acids COOH-terminal of the acceptor serine in the substrate peptide resulted in a 10-fold decrease of Km. Pkc1p activity was independent of cofactors such as phospholipids, diacylglycerol, and Ca2+, known to activate several mammalian protein kinase C isoenzymes, making it a rather distantly related member of the protein kinase C superfamily.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008322 Mammals Warm-blooded vertebrate animals belonging to the class Mammalia, including all that possess hair and suckle their young. Mammalia,Mammal
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D010748 Phosphopeptides PEPTIDES that incorporate a phosphate group via PHOSPHORYLATION. Phosphopeptide
D010957 Plasmids Extrachromosomal, usually CIRCULAR DNA molecules that are self-replicating and transferable from one organism to another. They are found in a variety of bacterial, archaeal, fungal, algal, and plant species. They are used in GENETIC ENGINEERING as CLONING VECTORS. Episomes,Episome,Plasmid
D011493 Protein Kinase C An serine-threonine protein kinase that requires the presence of physiological concentrations of CALCIUM and membrane PHOSPHOLIPIDS. The additional presence of DIACYLGLYCEROLS markedly increases its sensitivity to both calcium and phospholipids. The sensitivity of the enzyme can also be increased by PHORBOL ESTERS and it is believed that protein kinase C is the receptor protein of tumor-promoting phorbol esters. Calcium Phospholipid-Dependent Protein Kinase,Calcium-Activated Phospholipid-Dependent Kinase,PKC Serine-Threonine Kinase,Phospholipid-Sensitive Calcium-Dependent Protein Kinase,Protein Kinase M,Calcium Activated Phospholipid Dependent Kinase,Calcium Phospholipid Dependent Protein Kinase,PKC Serine Threonine Kinase,Phospholipid Sensitive Calcium Dependent Protein Kinase,Phospholipid-Dependent Kinase, Calcium-Activated,Serine-Threonine Kinase, PKC
D011993 Recombinant Fusion Proteins Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes. Fusion Proteins, Recombinant,Recombinant Chimeric Protein,Recombinant Fusion Protein,Recombinant Hybrid Protein,Chimeric Proteins, Recombinant,Hybrid Proteins, Recombinant,Recombinant Chimeric Proteins,Recombinant Hybrid Proteins,Chimeric Protein, Recombinant,Fusion Protein, Recombinant,Hybrid Protein, Recombinant,Protein, Recombinant Chimeric,Protein, Recombinant Fusion,Protein, Recombinant Hybrid,Proteins, Recombinant Chimeric,Proteins, Recombinant Fusion,Proteins, Recombinant Hybrid
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D005800 Genes, Fungal The functional hereditary units of FUNGI. Fungal Genes,Fungal Gene,Gene, Fungal

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