Abstract:
:In this study we used tightly-coupled mitochondria from Yarrowia lipolytica and Dipodascus (Endomyces) magnusii yeasts. The two yeast strains are good alternatives to Saccharomyces cerevisiae, being aerobes containing well structured mitochondria (thus ensuring less structural limitation to observe their appreciable swelling) and fully competent respiratory chain with three invariantly functioning energy conservation points, including Complex I, that can be involved in induction of the canonical Ca²⁺/P(i)-dependent mitochondrial permeability transition (mPTP pore) with an increased open probability when electron flux increases(Fontaine et al. J Biol Chem 273: 25734–25740, 1998; Bernardi et al. FEBS J 273:2077–2099, 2006). High amplitude swelling and collapse of the membrane potential were used as parameters for demonstrating pore opening. Previously (Kovaleva et al. J Bioenerg Biomembr 41:239–249, 2009; Kovaleva et al. Biochemistry (Moscow) 75: 297–303, 2010) we have shown that mitochondria from Y.lipolytica and D. magnusii were very resistant to the Ca²⁺overload combined with varying concentrations of P(i),palmitic acid, SH-reagents, carboxyatractyloside (an inhibitor of ADP/ATP translocator), as well as depletion of intramitochondrial adenine nucleotide pools, deenergization of mitochondria, and shifting to acidic pH values in the presence of high [P(i)]. Here we subjected yeast mitochondria to other conditions known to induce an mPTP in animal and plant mitochondria, namely to Ca²⁺ overload under hypoxic conditions (anaerobiosis). We were unable to observe Ca²⁺-induced high permeability of the inner membrane of D. magnusii and Y. lipolytica yeast mitochondria under anaerobic conditions, thus suggesting that an mPTP-like pore, if it ever occurs in yeast mitochondria, is not coupled with the Ca²⁺ uptake. The results provide the first demonstration of ATP-dependent energization of yeast mitochondria under conditions of anaerobiosis.
journal_name
J Bioenerg Biomembrjournal_title
Journal of bioenergetics and biomembranesauthors
Trendeleva T,Sukhanova E,Ural'skaya L,Saris NE,Zvyagilskaya Rdoi
10.1007/s10863-011-9402-3subject
Has Abstractpub_date
2011-12-01 00:00:00pages
623-31issue
6eissn
0145-479Xissn
1573-6881journal_volume
43pub_type
杂志文章abstract::Uncoupling proteins (UCPs) located in the inner mitochondrial membrane are involved in the regulation of energy balance. Thus far, 5 UCP isoforms have been identified, but controversies exist in the research focused on the function of the UCPs (except UCP1) in the pathogenesis of obesity. Because of the known cross-re...
journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
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journal_title:Journal of bioenergetics and biomembranes
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journal_title:Journal of bioenergetics and biomembranes
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journal_title:Journal of bioenergetics and biomembranes
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journal_title:Journal of bioenergetics and biomembranes
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
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更新日期:2002-08-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
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更新日期:2009-12-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1007/BF00769536
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1007/BF00785813
更新日期:1991-08-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
doi:10.1007/s10863-011-9353-8
更新日期:2011-06-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1007/BF00808117
更新日期:1989-10-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1007/BF00785997
更新日期:1991-10-01 00:00:00
abstract::Traumatic brain injury (TBI) is still the leading cause of disability in young adults worldwide. The major mechanisms - diffuse axonal injury, cerebral contusion, ischemic neurological damage, and intracranial hematomas have all been shown to be associated with mitochondrial dysfunction in some form. Mitochondrial dys...
journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1007/s10863-014-9589-1
更新日期:2015-04-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1023/B:JOBB.0000041756.23918.11
更新日期:2004-08-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 社论
doi:10.1007/s10863-012-9425-4
更新日期:2012-02-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
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更新日期:2004-08-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
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journal_title:Journal of bioenergetics and biomembranes
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
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更新日期:2016-02-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
doi:10.1007/BF00751054
更新日期:1983-12-01 00:00:00
abstract::Methylmalonic acidemia is one of the most prevalent inherited metabolic disorders involving neurological deficits. In vitro experiments, animal model studies and tissue analyses from human patients suggest extensive impairment of mitochondrial energy metabolism in this disease. This review summarizes changes in mitoch...
journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1007/s10863-011-9330-2
更新日期:2011-02-01 00:00:00
abstract::Increased membrane unsaturation has been associated with shorter longevity due to higher sensitivity to lipid peroxidation (LP) leading to enhanced mitochondrial dysfunction and ROS overproduction. However, the role of LP during aging has been put in doubt along with the participation of electron leak at the electron ...
journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
doi:10.1007/s10863-014-9550-3
更新日期:2014-06-01 00:00:00
abstract::This introductory article and those that follow focus on the roles that mitochondria may have in cancer metastasis (spreading) that all too frequently leads to death of cancer patients. The history of cancer dates back in time to several thousand years BC and continues to this day. Although billions of dollars have be...
journal_title:Journal of bioenergetics and biomembranes
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更新日期:2012-12-01 00:00:00
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journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章,评审
doi:10.1007/s10863-005-9476-x
更新日期:2005-12-01 00:00:00
abstract::Electron transport from Photosystem II to Photosystem I of spinach chloroplasts can be stimulated by bicarbonate and various carbonyl or carboxyl compounds. Monovalent or divalent cations, which have hitherto been implicated in the energy distribution between the two photosystems, i.e., "spillover" phenomena at low li...
journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
doi:10.1007/BF00744683
更新日期:1980-08-01 00:00:00
abstract::Cytochrome c oxidase was purified from mitochondria of Euglena gracilis and separated into 15 different polypeptide subunits by polyacrylamide gel electrophoresis. All 15 subunits copurify through various purification procedures, and the subunit composition of the isolated enzyme is identical to that of the immunoprec...
journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
doi:10.1007/BF00762727
更新日期:1989-06-01 00:00:00
abstract::A study of NADH ferricyanide reductase activity in oriented vesicles or open ghosts of human and porcine erythrocytes shows that the dehydrogenase activity can have three types of orientation in the membrane. There is activity which responds only to acceptors and NADH exclusively on the inside face, or exclusively on ...
journal_title:Journal of bioenergetics and biomembranes
pub_type: 杂志文章
doi:10.1007/BF00743068
更新日期:1982-12-01 00:00:00