Identification of creatine kinase isoenzymes in the guinea-pig presence of mitochondrial creatine kinase in smooth muscle
| Autor: | Yukisato Ishida, Wolfram Hemmer, Markus Wyss, Theo Wallimann |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Male
Biophysics Biology Mitochondrion Creatine Biochemistry Isozyme Muscle Smooth Vascular Phosphocreatine chemistry.chemical_compound Structural Biology Cricetinae Energetics Genetics medicine Animals Creatine Kinase Smooth muscle of guinea-pig and chicken (aorta taenia cacci vasdefens) Molecular Biology HEPES Cardiac muscle Muscle Smooth Fast protein liquid chromatography Electrophoresis Cellulose Acetate Cell Biology Mitochondria Muscle Isoenzymes Mitochondrial creatine kinase medicine.anatomical_structure chemistry Phosphocreatine circuit Chromatography Gel biology.protein CK isoenzymes Creatine kinase Chickens |
| Zdroj: | FEBS Letters. 283:37-43 |
| ISSN: | 0014-5793 |
| DOI: | 10.1016/0014-5793(91)80548-h |
| Popis: | Isoenzymes of creatine kinase (CK, EC 2.7.3.2) in guinea-pig smooth, cardiac and skeletal muscles as well as in brain were analyzed by cellulose acetate electrophoresis and FPLC gel permeation chromatography. In crude tissue extracts of smooth muscles brain type BB-CK and the hybrid form MB-CK were detected, but in enriched mitochondrial fractions from different guinea-pig smooth muscles, mitochondrial type Mi-CK was unambiguously identified. Smooth muscle Mi-CK displayed the same electrophoretic mobility as Mi-CK from brain, which migrates slower than cardiac Mi-CK. Identical to parallel experiments with Mi-CK from cardiac muscle and brain, smooth muscle Mi-CK could be resolved into dimeric and octameric species, the latter being remarkably stable. In contrast to guinea-pig smooth muscles, Mi-CK was not detected in chicken gizzard tissue extracts nor in enriched mitochondrial fractions thereof. The presence of Mi-CK, predominantly in octameric form, in guinea-pig smooth muscles, but not in chicken gizzard, may represent a clue for the different physiological properties of these muscles and may provide the molecular basis for the dependence of the PCr production on oxidative metabolism observed in the guinea-pig taenia caeci. |
| Databáze: | OpenAIRE |
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