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Kobayashi K, Iwasaki Y, Sasaki T, Nakamura K, Asahi T. Putative ammo-terminal presequence for β-subunit of plant mitochondrial F1ATPase deduced from the amino-terminal sequence of the mature subunit. FEBS Lett 2001. [DOI: 10.1016/0014-5793(86)80731-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Glaser E, Hamasur B, Norling B, Andersson B. Activation of F1-ATPase isolated from potato tuber mitochondria. FEBS Lett 2001. [DOI: 10.1016/0014-5793(87)80309-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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3
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Skulachev V. Energy Transduction Mechanisms (Animals and Plants). Compr Physiol 1997. [DOI: 10.1002/cphy.cp140104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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4
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Itoh A, Sekiya J. Tissue specificity of mitochondrial F0F1-ATPase activity of Lilium longiflorum plant. FEBS Lett 1994; 356:229-32. [PMID: 7805844 DOI: 10.1016/0014-5793(94)01269-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A large difference was found in the activities of oligomycin-sensitive mitochondrial F0F1-ATPase isolated from different tissues of Lilium longiflorum plants. The enzyme activity of F0F1-ATPase in pollen was the highest, while that in bulbs was the lowest. When ATPases were cross-reconstituted from F1-ATPases and F1-depleted submitochondrial particles (SMP), ATPases reconstituted from F1-depleted pollen SMP showed the higher activity regardless of the source of F1-ATPase. Fatty acid compositions of phospholipids in SMP were also different between bulbs and pollen. These suggest that the F0 portion and/or its environment are important for regulation of F0F1-ATPase activity in L. longiflorum plant.
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Affiliation(s)
- A Itoh
- Department of Agricultural Chemistry, Faculty of Agriculture, Kyoto University, Japan
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5
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Amzel LM, Blanchet MA, Pedersen PL. Structure of F0F1ATPases Determined by Direct and Indirect Methods. MEMBRANE PROTEIN STRUCTURE 1994:164-177. [DOI: 10.1007/978-1-4614-7515-6_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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6
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Luethy MH, Horak A, Elthon TE. Monoclonal Antibodies to the [alpha]- and [beta]-Subunits of the Plant Mitochondrial F1-ATPase. PLANT PHYSIOLOGY 1993; 101:931-937. [PMID: 12231744 PMCID: PMC158709 DOI: 10.1104/pp.101.3.931] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We have generated nine monoclonal antibodies against subunits of the maize (Zea mays L.) mitochondrial F1-ATPase. These monoclonal antibodies were generated by immunizing mice against maize mitochondrial fractions and randomly collecting useful hybridomas. To prove that these monoclonal antibodies were directed against ATPase subunits, we tested their cross-reactivity with purified F1-ATPase from pea cotyledon mitochondria. One of the antibodies ([alpha]-ATPaseD) cross-reacted with the pea F1-ATPase [alpha]-subunit and two ([beta]-ATPaseD and [beta]-ATPaseE) cross-reacted with the pea F1-ATPase [beta]-subunit. This established that, of the nine antibodies, four react with the maize [alpha]-ATPase subunit and the other five react with the maize [beta]-ATPase subunit. Most of the monoclonal antibodies cross-react with the F1-ATPase from a wide range of plant species. Each of the four monoclonal antibodies raised against the [alpha]-subunit recognizes a different epitope. Of the five [beta]-subunit antibodies, at least three different epitopes are recognized. Direct incubation of the monoclonal antibodies with the F1-ATPase failed to inhibit the ATPase activity. The monoclonal antibodies [alpha]-ATPaseD and [beta]-ATPaseD were bound to epoxide-glass QuantAffinity beads and incubated with a purified preparation of pea F1-ATPase. The ATPase activity was not inhibited when the antibodies bound the ATPase. The antibodies were used to help map the pea F1-ATPase subunits on a two-dimensional map of whole pea cotyledon mitochondrial protein. In addition, the antibodies have revealed antigenic similarities between various isoforms observed for the [alpha]- and [beta]-subunits of the purified F1-ATPase. The specificity of these monoclonal antibodies, along with their cross-species recognition and their ability to bind the F1-ATPase without inhibiting enzymic function, makes these antibodies useful and invaluable tools for the further purification and characterization of plant mitochondrial F1-ATPases.
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Affiliation(s)
- M. H. Luethy
- School of Biological Sciences and the Center for Biotechnology, University of Nebraska, Lincoln, Nebraska, 68588-0118 (M.H.L., T.E.E.)
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7
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Morikami A, Aiso K, Asahi T, Nakamura K. The delta'-subunit of higher plant six-subunit mitochondrial F1-ATPase is homologous to the delta-subunit of animal mitochondrial F1-ATPase. J Biol Chem 1992. [DOI: 10.1016/s0021-9258(18)48460-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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8
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Kimura T, Nakamura K, Kajiura H, Hattori H, Nelson N, Asahi T. Correspondence of Minor Subunits of Plant Mitochondrial F1ATPase to F1FOATPase Subunits of Other Organisms. J Biol Chem 1989. [DOI: 10.1016/s0021-9258(18)94048-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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9
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Gautheron DC, Godinot C. Evidence from immunological studies of structure-mechanism relationship of F1 and F1F0. J Bioenerg Biomembr 1988; 20:451-68. [PMID: 2464585 DOI: 10.1007/bf00762203] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Monoclonal and polyclonal antibodies directed against peptides of F1-ATPase of F1F0-ATPase synthase provide new and efficient tools to study structure-function relationships and mechanisms of such complex membrane enzymes. This review summarizes the main results obtained using this approach. Antibodies have permitted the determination of the nature of subunits involved in the complex, their stoichiometry, their organization, neighboring interactions, and vectorial distribution within or on either face of the membrane. Moreover, in a few cases, amino acid sequences exposed on a face of the membrane or buried inside the complex have been identified. Antibodies are very useful for detecting the role of each subunit, especially for those subunits which appear to have no direct involvement in the catalytic mechanism. Concerning the mechanisms, the availability of monoclonal antibodies which inhibit (or activate) ATP hydrolysis or ATP synthesis, which modify nucleotide binding or regulation of activities, which detect specific conformations, etc. brings many new ways of understanding the precise functions. The specific recognition by monoclonal antibodies on the beta subunit of epitopes in the proximity of, or in the catalytic site, gives information on this site. The use of anti-alpha monoclonal antibodies has shown asymmetry of alpha in the complex as already shown for beta. In addition, the involvement of alpha with respect to nucleotide site cooperativity has been detected. Finally, the formation of F1F0-antibody complexes of various masses, seems to exclude the functional rotation of F1 around F0 during catalysis.
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Affiliation(s)
- D C Gautheron
- Laboratoire de Biologie et Technologie des Membranes du CNRS, Université Claude Bernard de Lyon, Villeurbanne, France
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10
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Horak A, Horak H, Packer M. Subunit composition and cold stability of the pea cotyledon mitochondrial F1-ATPase. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1987. [DOI: 10.1016/0005-2728(87)90039-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Restoration of ATP synthesis in urea-treated membranes prepared from pea cotyledon mitochondria. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1987. [DOI: 10.1016/0005-2728(87)90157-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Moradi-Améli M, Godinot C. Availability to monoclonal antibodies of antigenic sites of the alpha and beta subunits in active, denatured or membrane-bound mitochondrial F1-ATPase. BIOCHIMICA ET BIOPHYSICA ACTA 1987; 890:55-65. [PMID: 2432934 DOI: 10.1016/0005-2728(87)90068-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The binding of five monoclonal antibodies to mitochondrial F1-ATPase has been studied. Competition experiments between monoclonal antibodies demonstrate that these antibodies recognize four different antigenic sites and provide information on the proximity of these sites. The accessibility of the epitopes has been compared for F1 integrated in the mitochondrial membrane, for purified beta-subunit and for purified F1 maintained in its active form by the presence of nucleotides or inactivated either by dilution in the absence of ATP or by urea treatment. The three anti-beta monoclonal antibodies bound more easily to the beta-subunit than to active F1, and recognized equally active F1 and F1 integrated in the membrane, indicating that their antigenic sites are partly buried similarly in purified or membrane-bound F1 and better exposed in the isolated beta-subunit. In addition, unfolding F1 by urea strongly increased the binding of one anti-beta monoclonal antibody (14 D5) indicating that this domain is at least partly shielded inside the beta-subunit. One anti-alpha monoclonal antibody (20 D6) bound poorly to F1 integrated in the membrane, while the other (7 B3) had a higher affinity for F1 integrated in the membrane than for soluble F1. Therefore, 20 D6 recognizes an epitope of the alpha-subunit buried inside F1 integrated in the membrane, while 7 B3 binds to a domain of the alpha-subunit well exposed at the surface of the inner face of the mitochondrial membrane.
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Horak A, Packer M. Coupling factor activity of the purified pea mitochondrial F1-ATPase. BIOCHIMICA ET BIOPHYSICA ACTA 1985; 810:310-8. [PMID: 2865969 DOI: 10.1016/0005-2728(85)90215-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The pea cotyledon mitochondrial F1-ATPase was released from the submitochondrial particles by a washing procedure using 300 mM sucrose/2 mM Tricine (pH 7.4). The enzyme was purified by DEAE-cellulose chromatography and subsequent sucrose density gradient centrifugation. Using polyacrylamide gel electrophoresis under non-denaturing conditions, the purified protein exhibited a single sharp band with slightly lower mobility than the purified pea chloroplast CF1-ATPase. The molecular weights of pea mitochondrial F1-ATPase and pea chloroplast CF1-ATPase were found to be 409 000 and 378 000, respectively. The purified pea mitochondrial F1-ATPase dissociated into six types of subunits on polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate. Most of these subunits had mobilities different from the subunits of the pea chloroplast CF1-ATPase. The purified mitochondrial F1-ATPase exhibited coupling factor activity. In spite of the observed differences between CF1 and F1, the mitochondrial enzyme stimulated ATP formation in CF1-depleted pea chloroplast membranes. Thus, the mitochondrial F1 was able to substitute functionally for the chloroplast CF1 in reconstituting photophosphorylation.
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Randall SK, Wang Y, Sze H. Purification and Characterization of the Soluble F(1)-ATPase of Oat Root Mitochondria. PLANT PHYSIOLOGY 1985; 79:957-62. [PMID: 16664552 PMCID: PMC1075006 DOI: 10.1104/pp.79.4.957] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The properties of the soluble moiety (F(1)) of the mitochondrial H(+)-ATPase from oat roots were examined and compared to those of the native mitochondrial membrane-bound enzyme. The chloroform soluble preparation was purified by Sephadex G-200 and DEAE-cellulose chromatography. The purified F(1) preparation contained major polypeptides corresponding to alpha, beta, gamma, delta, and epsilon of apparent molecular mass 58, 55, 35, 22, and 14 kilodaltons, respectively. The purified F(1)-ATPase, like the native enzyme, was inhibited by azide (I(50) = 10 micromolar), nitrate (I(50) = 7-10 millimolar), 4,4'-diisothiocyano-2,2'-stilbene disulfonic acid (I(50) = 1-3 micromolar), and 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole (I(50) = 3 micromolar). F(1)-ATPase activity was stimulated by bicarbonate but not by chloride. In both the native and the F(1)-form of the ATPase, ATP was hydrolyzed in preference to GTP. The results indicate that these properties of the native membrane-bound mitochondrial ATPase have been conserved in the purified F(1). In contrast to the membrane-bound enzyme, the F(1)-ATPase was not inhibited by oligomycin or by N,N'-dicyclohexylcarbodiimide. The mitochondrial F(1)-ATPase from oat roots is analogous to other known F(1)F(0)-ATPases.
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Affiliation(s)
- S K Randall
- Botany Department, University of Maryland, College Park, Maryland 20742
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15
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Iwasaki Y, Asahi T. Intracellular sites of the synthesis of sweet potato mitochondrial F1ATPase subunits. PLANT MOLECULAR BIOLOGY 1985; 5:339-346. [PMID: 24306987 DOI: 10.1007/bf00037554] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/1985] [Revised: 09/03/1985] [Accepted: 09/17/1985] [Indexed: 06/02/2023]
Abstract
Five subunits (α-, β-, γ-, δ- and δ'-subunits) of the six α∼δ'-and ε-subunits) in the F1 portion (F1ATPase) of sweet potato (Ipomoea batatas) mitochondrial adenosine triphosphatase were isolated by an electrophoretic method. The δ- and δ'-subunits were not distinguishable immunologically but showed completely different tryptic peptide maps, indicating that they were different molecular species. In vitro protein synthesis with isolated sweet potato root mitochondria produced only the α-subunit when analyzed with anti-sweet potato F1ATPase antibody reacting with all the subunits except the ε-subunit. Sweet potato root poly(A)(+)RNA directed the synthesis of six polypeptides which were immunoprecipitated by the antibody: two of them immunologically related to the β-subunit and the others to the δ- and δ'-subunits. We conclude that the α-subunit of the F1ATPase is synthesized only in the mitochondria and the β-, δ- and δ'-subunits are in the cytoplasm.
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Affiliation(s)
- Y Iwasaki
- Laboratory of Biochemistry, Faculty of Agriculture, Nagoya University, Chikusa, 464, Nagoya, Japan
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Braun CJ, Levings CS. Nucleotide Sequence of the F(1)-ATPase alpha Subunit Gene from Maize Mitochondria. PLANT PHYSIOLOGY 1985; 79:571-7. [PMID: 16664454 PMCID: PMC1074929 DOI: 10.1104/pp.79.2.571] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The alpha subunit of the F(1)-ATPase complex of maize is a mitochondrial translational product, presumably encoded by the mitochondrial genome. Based on nucleotide and amino acid homology, we have identified a mitochondrial gene, designated atpalpha, that appears to code for the F(1)-ATPase alpha subunit of Zea mays. The atpalpha gene is present as a single copy in the maize. Texas cytoplasm and is actively transcribed. The maize alpha polypeptide has a predicted length of 508 amino acids and a molecular mass of 55,187 daltons. Amino acid homologies between the maize mitochondrial alpha subunit and the tobacco chloroplast CF(1) and Escherichia coli alpha subunits are 54 and 51%, respectively. The origin of the atpalpha gene is discussed.
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Affiliation(s)
- C J Braun
- Department of Genetics, Box 7614, North Carolina State University, Raleigh, North Carolina 27695-7614
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Partridge B, Spitsberg VL, Pfeiffer NE, Schuster SM. Kinetic Analysis of Corn Mitochondrial F(1)-ATPase. PLANT PHYSIOLOGY 1985; 77:346-51. [PMID: 16664056 PMCID: PMC1064517 DOI: 10.1104/pp.77.2.346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The activation and catalytic mechanism of corn mitochondrial F(1) were examined for the two distinct forms of the enzyme which appear upon storage in ammonium sulfate or glycerol. Apparently irreversible differences in the stability of the two active forms were found. Nucleosidetriphosphate induced activation of the enzyme was found to produce lasting effects on subsequent catalysis. These effects varied with both the nucleotide used for activation, and the hydrolyzed species. The substrate and metal specificity were examined with the ATP activated enzyme. Mg(2+) and Ca(2+) were found to be the most effective at promoting ATP hydrolysis. The substrates were hydrolyzed in the order GTP > ITP > ATP regardless of which nucleotide was used for activation. While ATP and GTP hydrolysis exhibited kinetics typical of other ATPases, ITP showed a transition from negative to positive cooperativity at low substrate concentrations. Bicarbonate was found to affect primarily the kinetics of ATP hydrolysis. AMP-PNP proved to be a potent inhibitor with respect to ATP hydrolysis. The results are discussed in terms of possible catalytic mechanisms and the similarities of the corn mitochondrial F(1) to other ATPases.
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Affiliation(s)
- B Partridge
- Department of Chemistry, and School of Biological Sciences, University of Nebraska, Lincoln, Nebraska 68588-0304
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