Cloning and chromosomal location of a novel member of the myotonic dystrophy family of protein kinases

Yanming Zhao, Pascal Loyer, Haimin Li, Virginia Valentine, Vincent Kidd, Andrew Kraft

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We have cloned a novel serine/threonine protein kinase (PK428) which is highly related (65%) within the kinase domain to the myotonic dystrophy protein kinase (DM-PK), as well as the cyclic AMP-dependent protein kinase (33%). Northern blots demonstrate that PK428 mRNA is distributed widely among tissues and is expressed at the highest levels in pancreas, heart, and skeletal muscle, with lower levels in liver and lung. Two PK428 mRNAs 10 and 3.8 kilobase pairs in size are seen in a number of cell lines, including hematopoietic and breast cancer cells. An antibody generated to a glutathione S-transferase-PK428 fusion protein detects a 65-kDa protein in these cell lines, and a similarly sized protein when the cloned cDNA is transiently expressed in Cos 7 cells. Immunoprecipitation of the transiently expressed PK428 protein and incubation with [γ-32P]ATP demonstrate that it is capable of autophosphorylation. In addition, immunoprecipitates of the PK428 protein kinase also phosphorylated histone H1 and a peptide encoding a cyclic AMP-dependent protein kinase substrate. The gene corresponding to the 3.8-kb PK428 mRNA, and its corresponding 65-kDa protein, was isolated by polymerase chain reaction screening of a P1 phage human genomic library. Using this P1 phage clone as a probe, the PK428 gene was located on 1q41-42, a possible location for a human senescence gene, a gene associated with Rippling muscle disease, as well as a region associated with genetically acquired mental retardation.

Original languageEnglish (US)
Pages (from-to)10013-10020
Number of pages8
JournalJournal of Biological Chemistry
Volume272
Issue number15
DOIs
StatePublished - Apr 11 1997
Externally publishedYes

Fingerprint

Cloning
Protein Kinases
Organism Cloning
Genes
Bacteriophage P1
Bacteriophages
Cells
Cyclic AMP-Dependent Protein Kinases
Proteins
Messenger RNA
Muscle
Cell Line
Genomic Library
Protein-Serine-Threonine Kinases
Polymerase chain reaction
Glutathione Transferase
Immunoprecipitation
Intellectual Disability
Northern Blotting
Liver

ASJC Scopus subject areas

  • Biochemistry

Cite this

Cloning and chromosomal location of a novel member of the myotonic dystrophy family of protein kinases. / Zhao, Yanming; Loyer, Pascal; Li, Haimin; Valentine, Virginia; Kidd, Vincent; Kraft, Andrew.

In: Journal of Biological Chemistry, Vol. 272, No. 15, 11.04.1997, p. 10013-10020.

Research output: Contribution to journalArticle

Zhao, Yanming ; Loyer, Pascal ; Li, Haimin ; Valentine, Virginia ; Kidd, Vincent ; Kraft, Andrew. / Cloning and chromosomal location of a novel member of the myotonic dystrophy family of protein kinases. In: Journal of Biological Chemistry. 1997 ; Vol. 272, No. 15. pp. 10013-10020.
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