Expression of the mitochondrial creatine kinase genes

R. Payne, Arnold W. Strauss

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Mitochondrial Creatine Kinase (MtCK) is responsible for the transfer of high energy phosphate from mitochondria to the cytosolic carrier, creatine, and exists in mammals as two isoenzymes encoded by separate genes. In rats and humans, sarcomere-specific MtCK (sMtCK) is expressed only in skeletal and heart muscle, and has 87% nucleotide identity across the 1257 bp coding region. The ubiquitous isoenzyme of MtCK (uMtCK) is expressed in many tissues with highest levels in brain, gut, and kidney, and has 92% nucleotide identity between the 1254 bp coding regions of rat and human. Both genes are highly regulated developmentally in a tissue-specific manner. There is virtually no expression of sMtCK mRNA prior to birth. Unlike cytosolic muscle CK (MCK) and brain CK (BCK), there is no developmental isoenzyme switch between the MtCKs. Cell culture models representing the tissue-specific expression of either sMtCK or uMtCK are available, but there are no adequate developmental models to examine their regulation. Several animal models are available to examine the coordinate regulation of the CK gene family and include 1) Cardiac Stress by coarctation (sMtCK, BCK, and MCK), 2) Uterus and placenta during pregnancy (uMtCK and BCK), and 3) Diabetes and mitochondrial myopathy (sMtCK, BCK, and MCK). We report the details of these findings, and discuss the coordinate regulation of the genes necessary for high-energy transduction.

Original languageEnglish (US)
Pages (from-to)235-243
Number of pages9
JournalMolecular and Cellular Biochemistry
Volume133-134
Issue number1
DOIs
StatePublished - Apr 1994
Externally publishedYes

Fingerprint

Mitochondrial Form Creatine Kinase
Isoenzymes
Brain
Genes
Muscle
Tissue
Muscles
Rats
Nucleotides
Mitochondrial Myopathies
Sarcomeres
Mitochondria
Mammals
Creatine
Energy Transfer
Medical problems
Cell culture
Placenta
Uterus
Myocardium

Keywords

  • creatine kinase
  • creatine phosphate shuttle
  • gene expression
  • metabolism
  • mitochondria
  • muscle

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Clinical Biochemistry
  • Cell Biology

Cite this

Expression of the mitochondrial creatine kinase genes. / Payne, R.; Strauss, Arnold W.

In: Molecular and Cellular Biochemistry, Vol. 133-134, No. 1, 04.1994, p. 235-243.

Research output: Contribution to journalArticle

Payne, R. ; Strauss, Arnold W. / Expression of the mitochondrial creatine kinase genes. In: Molecular and Cellular Biochemistry. 1994 ; Vol. 133-134, No. 1. pp. 235-243.
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