Menin 2001 Mol Cell Biochem

Has title::Menin L, Panchichkina M, Keriel C, Olivares J, Braun U, Seppet EK, Saks VA (2001) Macrocompartmentation of total creatine in cardiomyocytes revisited. Mol Cell Biochem 220: 149-159.

» [[Has info::PMID: 11451375 ]]

Was written by::Menin L, Was written by::Panchichkina M, Was written by::Keriel C, Was written by::Olivares J, Was written by::Braun U, Was written by::Seppet EK, Was written by::Saks VA (Was published in year::2001) Was published in journal::Mol Cell Biochem

Abstract: [[has abstract::Distribution of total creatine (free creatine + phosphocreatine) between two subcellular macrocompartments – mitochondrial matrix space and cytoplasm – in heart and skeletal muscle cells was reinvestigated by using a permeabilized cell technique. Isolated cardiomyocytes were treated with saponin (50 mgrg/ml for 30 min or 600 mgrg/ml for 1 min) to open the outer cellular membrane and release the metabolites from cytoplasm (cytoplasmic fraction, CF). All mitochondrial population in permeabilized cells remained intact: the outer membrane was impermeable for exogenous cytochrome c, the acceptor control index of respiration exceeded 10, the mitochondrial creatine kinase reaction was fully coupled to the adenine nucleotide translocator. Metabolites were released from mitochondrial fraction (MF) by 2–5% Triton X100. Total cellular pool of free creatine + phosphocreatine (69.6 ± 2.1 nmoles per mg of protein) was found exclusively in CF and was practically absent in MF. When fibers were prepared from perfused rat hearts, cellular distribution of creatine was not dependent on functional state of the heart and only slightly modified by ischemia. It is concluded that there is no stable pool of creatine or phosphocreatine in the mitochondrial matrix in the intact muscle cells, and the total creatine pool is localized in only one macrocompartment – cytoplasm.]] • Keywords: has publicationkeywords::Heart, has publicationkeywords::Skeletal muscle, has publicationkeywords::Mitochondria, has publicationkeywords::Creatine, has publicationkeywords::Phosphocreatine, has publicationkeywords::Compartmentation

• O2k-Network Lab: Was published by MiPNetLab::EE Tallinn Saks VA, Was published by MiPNetLab::EE Tartu Seppet EK

Labels:

Tissue;cell: tissue and cell::Heart  Preparation: Preparation::Permeabilized tissue 

Coupling state: Coupling states::OXPHOS 

HRR: Instrument and method::Oxygraph-2k