Abstract：
:F1-ATPases transiently entrap inhibitory MgADP in a catalytic site during turnover when noncatalytic sites are not saturated with ATP. An initial burst of ATP hydrolysis rapidly decelerates to a slow intermediate rate that gradually accelerates to a final steady-state rate. Transition from the intermediate to the final rate is caused by slow binding of ATP to noncatalytic sites which promotes dissociation of inhibitory MgADP from the affected catalytic site. Evidence from several laboratories suggests that the gamma subunit rotates with respect to alpha/beta subunit pairs of F1-ATPase during ATP hydrolysis. The alpha 3 beta 3 and alpha 3 beta 3 delta subcomplexes of the TF1-ATPase do not entrap inhibitory MgADP in a catalytic site during turnover, suggesting involvement of the gamma subunit in the entrapment process. From these observations, it is proposed that the gamma subunit moves into an abortive position for ATP hydrolysis when inhibitory MgADP is entrapped in a catalytic site during ATP hydrolysis.
journal_name
J Bioenerg Biomembrjournal_title
Journal of bioenergetics and biomembranesauthors
Allison WS,Jault JM,Dou C,Grodsky NBdoi
10.1007/BF02113985subject
Has Abstractpub_date
1996-10-01 00:00:00pages
433-8issue
5eissn
0145-479Xissn
1573-6881journal_volume
28pub_type
杂志文章,评审abstract：:Mitochondrial porin facilitates the diffusion of small hydrophilic molecules across the mitochondrial outer membrane. Despite low sequence similarity among porins from different species, a "glycine-leucine-lysine" (GLK) motif is conserved in mitochondrial and Neisseria porins. To investigate the possible roles of thes...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1005618510502
更新日期：2000-12-01 00:00:00
abstract：:The plasma membrane-enriched fraction isolated from smooth muscle of rat gastric fundus was found to contain a substantial level of potassium-stimulated p-nitrophenylphosphatase activity (K-pNPPase), and its subcellular distribution closely resembled that of other plasma membrane enzyme markers. The kinetic profile of...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/BF00743050
更新日期：1986-08-01 00:00:00
abstract：:The topic of human adult neural plasticity and neurogenesis is of great interest for medical and scientific community, but it is also largely debated. In the last years, an increasing interest has been paid to the olfactory system, and particularly to the plasticity of the olfactory bulb (OB). While the molecular/cell...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/s10863-018-9780-x
更新日期：2019-02-01 00:00:00
abstract：:Specific molecular interactions that determine many of the functions of a biomembrane have a high probability of occurring at the surface of that membrane. However, unlike their hydrophobic core, the polar-apolar interface of biomembranes has been somewhat neglected experimentally. Reasons for this are that the chemic...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00762300
更新日期：1987-12-01 00:00:00
abstract：:High-conductance calcium-activated potassium (maxi-K) channels comprise a specialized family of K+ channels. They are unique in their dual requirement for depolarization and Ca2+ binding for transition to the open, or conducting, state. Ion conduction through maxi-K channels is blocked by a family of venom-derived pep...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF02110699
更新日期：1996-06-01 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：:Affinity labeling and genetic studies on the glycine-rich sequence of the beta subunit of E. coli F-type ATPase are discussed. A model of the structure of the enzyme near the gamma phosphate moiety is proposed. ...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00762363
更新日期：1992-10-01 00:00:00
abstract：:Absorbance changes at 446 nm in purified cytochrome oxidase following flash photolysis of carboxy-oxidase poised in the mixed valance state at +220 mV show biphasic kinetics. One phase corresponds to CO recombination to ferrous cytochrome a3 with an energy of activation of 9 kcal/mol; the second phase is 3-5 times fas...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/BF00762550
更新日期：1988-12-01 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：:We have studied a mutant strain of Drosophila in which 80% of the mitochondrial DNA molecules have lost over 30% of their coding region through deletion. This deletion affects genes encoding five subunits of complex I of the respiratory chain (NADH:ubiquinone oxidoreductase). The enzymatic activity of complex I in the...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/b:jobb.0000023624.06665.40
更新日期：2004-04-01 00:00:00
abstract：:The presence of transplasma membrane electron transport in a variety of plant cells and tissues is reported. It is now agreed that this property of eukaryotic cells is of ubiquitous nature. Studies with highly purified plasma membranes have established the presence of electron transport enzymes. Two types of activitie...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00771013
更新日期：1991-06-01 00:00:00
abstract：:Although the "Warburg effect", i.e., elevated glucose metabolism to lactic acid (glycolysis) even in the presence of oxygen, has been recognized as the most common biochemical phenotype of cancer for over 80 years, its biochemical and genetic basis remained unknown for over 50 years. Work focused on elucidating the un...
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
abstract：:Recent studies of isolated muscle membrane have enabled induction and monitoring of rapid Ca2+ release from sarcoplasmic reticulum (SR)5 in vitro by a variety of methods. On the other hand, various proteins that may be directly or indirectly involved in the Ca2+ release mechanism have begun to be unveiled. In this min...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00812071
更新日期：1989-04-01 00:00:00
abstract：:The possibility is analyzed that the pH of the water space localized inside the invagination of a membrane can differ from the pH of the external bulk buffer outside the invagination. The proton flow responsible for decreased pH values inside mitochondrial cristae and membrane invaginations of cyanobacteria has been c...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/BF00745047
更新日期：1983-06-01 00:00:00
abstract：:We have studied changes in plasma membrane NAD(P)H:quinone oxidoreductases of HL-60 cells under serum withdrawal conditions, as a model to analyze cell responses to oxidative stress. Highly enriched plasma membrane fractions were obtained from cell homogenates. A major part of NADH-quinone oxidoreductase in the plasma...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1016035504049
更新日期：2002-06-01 00:00:00
abstract：:Mitochondria are both targets and sources of oxidative stress. This dual relationship is particularly evident in experimental paradigms modeling ischemic brain injury. One mitochondrial metabolic enzyme that is particularly sensitive to oxidative inactivation is pyruvate dehydrogenase. This reaction is extremely impor...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/B:JOBB.0000041766.71376.81
更新日期：2004-08-01 00:00:00
abstract：:3-Bromopyruvate (3BP) is an energy-depleting drug that inhibits Hexokinase II activity by alkylation during glycolysis, thereby suppressing the production of ATP and inducing cell death. As such, 3BP can potentially serve as an anti-tumorigenic agent. Our previous research showed that 3BP can induce apoptosis via AKT ...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-015-9612-1
更新日期：2015-08-01 00:00:00
abstract：:Members of the genus Methanosarcina are strictly anaerobic archaea that derive their metabolic energy from the conversion of a restricted number of substrates to methane. H2 + CO2 are converted to CH4 via the CO2-reducing pathway, while methanol and methylamines are metabolized by the methylotrophic pathway. Two novel...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/b:jobb.0000019598.64642.97
更新日期：2004-02-01 00:00:00
abstract：:Plasma membranes isolated from pig liver contained almost no acid sphingomyelinase but significant neutral magnesium-dependent sphingomyelinase that was activated by phosphatidylserine. We report here the purification to apparent homogeneity of neutral sphingomyelinase of about 87 kDa from liver plasma membranes. The ...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1010704715979
更新日期：2001-04-01 00:00:00
abstract：:The serotonergic system plays a crucial role in the energy balance regulation. Energy balance is mediated by food intake and caloric expenditure. Thus, the present study investigated the mechanisms that might be associated with fluoxetine treatment-induced weight reduction. Wistar male rat pups received daily injectio...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-015-9617-9
更新日期：2015-08-01 00:00:00
abstract：:Copper transporting P-type ATPases, designated ATP7A and ATP7B, play an essential role in mammalian copper balance. Impaired intestinal transport of copper, resulting from mutations in the ATP7A gene, lead to Menkes disease in humans. Defects in a similar gene, the copper transporting ATPase ATP7B, result in Wilson di...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/a:1021293818125
更新日期：2002-10-01 00:00:00
abstract：:The organization of the oxidative phosphorylation (OXPHOS) system within the inner mitochondrial membrane appears to be far more complicated than previously thought. In particular, the individual protein complexes of the OXPHOS system (complexes I to V) were found to specifically interact forming defined supramolecula...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/s10863-008-9167-5
更新日期：2008-10-01 00:00:00
abstract：:Many previous investigations have consistently reported that caloric restriction (40%), which increases maximum longevity, decreases mitochondrial reactive species (ROS) generation and oxidative damage to mitochondrial DNA (mtDNA) in laboratory rodents. These decreases take place in rat liver after only seven weeks of...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-006-9051-0
更新日期：2006-12-01 00:00:00
abstract：:A sodium-dependent phosphate transporter (type II Na/Pi-cotransporter) was isolated which is expressed in apical membranes of proximal tubules and exhibits transport characteristics similar as described for renal reabsorption of phosphate. Type II associated Na/Pi-cotransport is electrogenic and results obtained by el...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/a:1020525409894
更新日期：1998-04-01 00:00:00
abstract：:The role of nucleoside diphosphate (NDP) kinase with special reference to mammalian signal transduction systems was described. The interaction between NDP kinases and G proteins was reevaluated in view of their protein structural information and its significance was extended further on the basis of recent findings obt...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/a:1023489722460
更新日期：2003-02-01 00:00:00
abstract：:Cytoplasmic male sterility arises when mitochondrial activities are disrupted that are essential for pollen development. Rearrangements in the mitochondrial genome that create novel open reading frames are strongly correlated with CMS phenotypes in a number of systems. The morphological aberrations which indicate CMS-...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF02110007
更新日期：1995-08-01 00:00:00
abstract：:Mitochondria are responsible for many vital cellular functions in eukaryotic cells, such as ATP production, steroid synthesis and prosthetic group biogenesis. The vital functions of mitochondria are possible due to the compartmental nature of this organelle. Mitochondria form a dynamic network that can exist as a netw...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/s10863-016-9648-x
更新日期：2017-02-01 00:00:00
abstract：:Free radical production and leak of brain nonsynaptic mitochondria were higher with pyruvate/malate than with succinate in rats and pigeons. Rotenone, antimycin A, and myxothiazol maximally stimulated free radical production with pyruvate/malate but not with succinate. Simultaneous treatment with myxothiazol plus anti...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1020592719405
更新日期：1998-06-01 00:00:00
abstract：:Bacterial growth at the extremes of temperature has remained a fascinating aspect in the study of membrane function and structure. The stability of the integral membrane proteins of thermophiles make them particularly amenable to study. Respiratory enzymes of thermophiles appear to be functionally similar to the mesop...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00762352
更新日期：1992-12-01 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
