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Electrochemistry of Ru(edta) complexes relevant to small molecule transformations: Catalytic implications and challenges. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213773] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Maher AG, Liu M, Nocera DG. Ligand Noninnocence in Nickel Porphyrins: Nickel Isobacteriochlorin Formation under Hydrogen Evolution Conditions. Inorg Chem 2019; 58:7958-7968. [DOI: 10.1021/acs.inorgchem.9b00717] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Andrew G. Maher
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Mengran Liu
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Daniel G. Nocera
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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3
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Effect of silver nanoelectrode ensembles on the electrocatalytic reduction of NO2− by zinc phthalocyanine. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.02.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Ruhlmann L, Costa-Coquelard C, Canny J, Thouvenot R. Electrochemical and electrocatalytical investigations on the trimanganese sandwich complex [NaMn3(H2O)2(P2W15O56)2]17−. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2007.02.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ruhlmann L, Genet G. Wells–Dawson-derived tetrameric complexes {K28H8[P2W15Ti3O60.5]4} electrochemical behaviour and electrocatalytic reduction of nitrite and of nitric oxide. J Electroanal Chem (Lausanne) 2004. [DOI: 10.1016/j.jelechem.2004.02.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Ruhlmann L, Canny J, Contant R, Thouvenot R. Di- and tricobalt Dawson sandwich complexes: synthesis, spectroscopic characterization, and electrochemical behavior of Na(18)[(NaOH(2))(2)Co(2)(P(2)W(15)O(56))(2)] and Na(17)[(NaOH(2))Co(3)(H(2)O)(P(2)W(15)O(56))(2)]. Inorg Chem 2002; 41:3811-9. [PMID: 12132904 DOI: 10.1021/ic020146u] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of the trivacant Dawson anion alpha-[P(2)W(15)O(56)](12-) and the divalent cations Co(2+) is known to form the tetracobalt sandwich complex [Co(4)(H(2)O)(2)(P(2)W(15)O(56))(2)](16-) (Co(4)P(4)W(30)). Two new complexes, with different Co/P(2)W(15) stoichiometry, [(NaOH(2))(2)Co(2)(P(2)W(15)O(56))(2)](18-) (Na(2)Co(2)P(4)W(30)) and [(NaOH(2))Co(3)(H(2)O)(P(2)W(15)O(56))(2)](17-) (NaCo(3)P(4)W(30)), have been synthesized as aqueous-soluble sodium salts, by a slight modification of the reaction conditions. Both compounds were characterized by IR, elemental analysis, and (31)P solution NMR spectroscopy. These species are "lacunary" sandwich complexes, which add Co(2+) cations according to Na(2)Co(2)P(4)W(30) + Co(2+) --> NaCo(3)P(4)W(30) + Na(+) followed by NaCo(3)P(4)W(30) + Co(2+) --> Co(4)P(4)W(30) + Na(+). A Li(+)/Na(+) exchange in the cavity was evidenced by (31)P dynamic NMR spectroscopy. The electrochemical behaviors of the sandwich complexes [(NaOH(2))Co(3)(H(2)O)(P(2)W(15)O(56))(2)](17-) and [(NaOH(2))(2)Co(2)(P(2)W(15)O(56))(2)](18-) were investigated in aqueous solutions and compared with that of [Co(4)(H(2)O)(2)(P(2)W(15)O(56))(2)](16-). These complexes showed an electrocatalytic effect on nitrite reduction.
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Affiliation(s)
- Laurent Ruhlmann
- Laboratoire de Chimie Physique, Groupe TEMiC, Equipe d'Electrochimie et de Photoélectrochimie, UMR 8000, Université Paris-sud, Bâtiment 420, 91405 Orsay Cedex, France.
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7
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Maldonado J, Notton B, Hewitt E. Effects of reduced dehydrogenase electron acceptors on the various nitrate dependant activities of spinach (Spinacea oleracea
L.) nitrate reductase. FEBS Lett 2001. [DOI: 10.1016/0014-5793(78)80829-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Gardberg AS, Doan PE, Hoffman BM, Ibers JA. Singly and Doubly Oxidized Phthalocyanine (pc) Rings: [Cu(pc)(ReO4)] and [Cu(pc)(ReO4)2]. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010105)113:1<250::aid-ange250>3.0.co;2-a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Gardberg AS, Doan PE, Hoffman BM, Ibers JA. Singly and Doubly Oxidized Phthalocyanine (pc) Rings: [Cu(pc)(ReO 4 )] and [Cu(pc)(ReO 4 ) 2 ]. Angew Chem Int Ed Engl 2001; 40:244-246. [PMID: 29711941 DOI: 10.1002/1521-3773(20010105)40:1<244::aid-anie244>3.0.co;2-g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2000] [Indexed: 11/11/2022]
Affiliation(s)
- Anna S Gardberg
- Department of Chemistry and Materials Research Center Northwestern University, 2145 Sheridan Road Evanston, IL, USA 60208-3113, USA, Fax: (+1) 847-491-2976
| | - Peter E Doan
- Department of Chemistry and Materials Research Center Northwestern University, 2145 Sheridan Road Evanston, IL, USA 60208-3113, USA, Fax: (+1) 847-491-2976
| | - Brian M Hoffman
- Department of Chemistry and Materials Research Center Northwestern University, 2145 Sheridan Road Evanston, IL, USA 60208-3113, USA, Fax: (+1) 847-491-2976
| | - James A Ibers
- Department of Chemistry and Materials Research Center Northwestern University, 2145 Sheridan Road Evanston, IL, USA 60208-3113, USA, Fax: (+1) 847-491-2976
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Ranjit K, Viswanathan B. Photocatalytic reduction of nitrite and nitrate ions over doped TiO2 catalysts. J Photochem Photobiol A Chem 1997. [DOI: 10.1016/s1010-6030(97)00025-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Abstract
To understand the evolutionary mechanisms and relationships of nitrate reductases (NRs), the nucleotide sequences encoding 19 nitrate reductase (NR) genes from 16 species of fungi, algae, and higher plants were analyzed. The NR genes examined show substantial sequence similarity, particularly within functional domains, and large variations in GC content at the third codon position and intron number. The intron positions were different between the fungi and plants, but conserved within these groups. The overall and nonsynonymous substitution rates among fungi, algae, and higher plants were estimated to be 4.33 x 10(-10) and 3.29 x 10(-10) substitutions per site per year. The three functional domains of NR genes evolved at about one-third of the rate of the N-terminal and the two hinge regions connecting the functional domains. Relative rate tests suggested that the nonsynonymous substitution rates were constant among different lineages, while the overall nucleotide substitution rates varied between some lineages. The phylogenetic trees based on NR genes correspond well with the phylogeny of the organisms determined from systematics and other molecular studies. Based on the nonsynonymous substitution rate, the divergence time of monocots and dicots was estimated to be about 340 Myr when the fungi-plant or algae-higher plant divergence times were used as reference points and 191 Myr when the rice-barley divergence time was used as a reference point. These two estimates are consistent with other estimates of divergence times based on these reference points. The lack of consistency between these two values appears to be due to the uncertainty of the reference times.
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Affiliation(s)
- J Zhou
- Department of Genetics and Cell Biology, Washington State University, Pullman 99164-6420, USA
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Sellmann D, Seubert B. Molekulare Mechanismen der Reduktion von NO zu NH2OH an Molybdän-Schwefel-Zentren. Angew Chem Int Ed Engl 1992. [DOI: 10.1002/ange.19921040219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Development of a sensor for the detection of nitrite using a glassy carbon electrode modified with the electrocatalyst [Os(bipy)2(PVP)10Cl]Cl. Anal Chim Acta 1991. [DOI: 10.1016/0003-2670(91)85085-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Fanning JC. The interaction of iron complexes with small nitrogen-containing molecules and ions. Coord Chem Rev 1991. [DOI: 10.1016/0010-8545(91)80007-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Bagchi S, Rai A, Singh H. Regulation of nitrate reductase in cyanobacteria. Repression-derepression control of nitrate reductase apoprotein in the cyanobacterium Nostoc muscorum. Biochim Biophys Acta Gen Subj 1985. [DOI: 10.1016/0304-4165(85)90236-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Di Martino Rigano V, Vona V, Fuggi A, Di Martino C, Rigano C. Regulation of Nitrate Reductase in Chlorella. Nitrate Requirement for the Appearance of Nitrate Reductase Activity. ACTA ACUST UNITED AC 1983. [DOI: 10.1016/s0304-4211(83)80018-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Regulation by Oxidation-Reduction of Ferredoxin-NADP Reductase from Spinach Chloroplasts. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/s0044-328x(81)80131-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Ekés M. Ultrastructural demonstration of ferricyanide reductase (Diaphorase) activity in the envelopes of the plastids of etiolated barley (Hordeum vulgare L.) leaves. PLANTA 1981; 151:439-446. [PMID: 24302109 DOI: 10.1007/bf00386537] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/1980] [Accepted: 09/02/1980] [Indexed: 06/02/2023]
Abstract
Electron-dense precipitate was found consistently in the plastid envelope compartment in etiolated barley (Hordeum vulgare L.) leaves, incubated prior to fixation with succinate or malate as substrates and ferricyanide as the electron acceptor. Sulfhydryl reagents p-chloromercuribenzoate and N-ethylmaleimide abolished this reaction, while KCN did not affect it. Prefixation with 0.1% glutaraldehyde followed by incubation in basic media did not change the fine structural localization of precipitate, whereas pretreatment with 1.25% glutaraldehyde resulted in aspecific precipitation. Omission of the subtrate from the medium brought about diminished or negative reaction. Our results indicate that a (possibly not yet assembled) nitrate reductase complex is present in the plastid envelope compartment, the diaphorase part of which is responsible for the observed precipitation.
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Affiliation(s)
- M Ekés
- Department of Plant Anatomy, Eötvös Loránd University, Muzeum krt. 4/A, H-1088, Budapest, Hungary
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Losada M, Guerrero MG, Vega JM. The Assimilatory Reduction of Nitrate. PROCEEDINGS IN LIFE SCIENCES 1981. [DOI: 10.1007/978-3-642-67919-3_3] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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21
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Llobell A, Bárcena J, Vila R, Paneque A. Flavin-Mediated Photoreduction of Nitrate by Nitrate Reductase from Azotobacter chroococcum. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/s0044-328x(80)80277-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Rigano C, Vona V, Di Martino Rigano V, Fuggi A. Active and inactive nitrate reductase. Effects of mild treatment with denaturing agents of protein. BIOCHIMICA ET BIOPHYSICA ACTA 1980; 613:26-33. [PMID: 7189670 DOI: 10.1016/0005-2744(80)90188-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Nitrate reductase (NAD(P)H:nitrate oxidoreductase, EC 1.6.6.2) of the unicellular alga Cyanidium caldarium can exist in two interconvertible forms; one catalytically active and one inactive. The inactive nitrate reductase can be activated by mild treatment with denaturing agents of protein. By treatment with urea or mersalyl, activation of both the NADPH and benzyl viologen activities can be realized under mild conditions, whereas by treatment with heat, the activation of benzyl viologen activity is concomitant with loss of the NADPH activity. On the other hand, both activities are activated and destroyed concomitantly by ethylene glycol. In the present of FAD, either activation of benzyl viologen activity or loss of NADPH activity upon heating occur only at higher temperatures. The existence of a controlling region in the nitrate reductase molecule is postulated.
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23
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Chang CK. Synthesis and characterization of alkylated isobacteriochlorins, models of siroheme and sirohydrochlorin. Biochemistry 1980; 19:1971-6. [PMID: 7378387 DOI: 10.1021/bi00550a037] [Citation(s) in RCA: 73] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Chaparro A, de la Rosa MA, Vega JM. Involvement of Oxygen in Chlorella fusca Nitrate Reductase Inactivation by Reduced Nicotinamide Adenine Dinucleotide. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/s0044-328x(79)80030-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
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27
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Zauner E, Schlanderer G, Held W, Dellweg H. Growth of the yeast Hansenula anomala with nitrate as sole source of nitrogen under aerobic and anaerobic conditions. Biotechnol Lett 1979. [DOI: 10.1007/bf01388185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Rigano C, Vona V, Di Martino Rigano V, Fuggi A. Nitrate reductase and glutamate dehydrogenase of the red alga Porphyridium aerugineum. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0304-4211(79)90111-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Glutamine synthetase activity, ammonia assimilation and control of nitrate reduction in the unicellular red algaCyanidium caldarium. Arch Microbiol 1979. [DOI: 10.1007/bf00689974] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Llama MJ, Macarulla JM, Serra JL. Characterization of the nitrate reductase activity in the diatom Skeletonema costatum. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0304-4211(79)90056-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Presence of haem in the tungsten analogue of nitrate reductase and its relationship to dehydrogenase function. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0304-4211(79)90159-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Roldán JM, Calero F, Aparicio PJ. Photoreactivation of Spinach Nitrate Reductase: Role of Flavins. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/s0044-328x(78)80215-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Vila R, Llobell A, Bárcena JA, Paneque A. Nitrate reductase from Azotobacter chroococcum. Inactivation by oxidizing agents and reactivation with dithioerythritol. Biochem Biophys Res Commun 1978; 84:943-9. [PMID: 728161 DOI: 10.1016/0006-291x(78)91674-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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37
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Manzano C, Candau P, Guerrero MG. Affinity chromatography of Anacystis nidulans ferredoxin nitrate reductase and NADP reductase on reduced ferredoxin-Sepharose. Anal Biochem 1978; 90:408-12. [PMID: 103462 DOI: 10.1016/0003-2697(78)90044-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Maldonado J, Notton B, Hewitt E. Inhibitory effects of ferrocytochrome c on NADH-nitratereductase activity of spinach (Spinacea oleracea L.). ACTA ACUST UNITED AC 1978. [DOI: 10.1016/s0304-4211(78)80011-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Serra JL, Llama MJ, Cadenas E. Characterization of the nitrate reductase activity in the diatom Skeletonema costatum. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/0304-4211(78)90063-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Gewitz HS, Piefke J, Vennesland B. Nitrate reductase of Chlorella fusca: Partial purification, cytochrome content and presence of HCN after in vivo inactivation. PLANTA 1978; 141:323-328. [PMID: 24414880 DOI: 10.1007/bf00388351] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/1978] [Accepted: 04/19/1978] [Indexed: 06/03/2023]
Abstract
An inactivated nitrate reductase (EC 1.6.6.1) formed in vivo by the green alga Chlorella fusca Shihira and Kraus is shown to be a cyanide complex. The partially purified inactive enzyme releases 0.048 nmol of HCN per unit of enzyme activated. This compares with 0.066 nmol of HCN liberated in similar previous measurements with the inactivated enzyme from Chlorella vulgaris. The nitrate reductase from C. fusca has been purified to a level of 67 μmol nitrate reduced per min per mg enzyme. It contains a cytochrome b557, at a level 1.9-fold higher per unit of active enzyme, than the nitrate reductase from C. vulgaris.
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Affiliation(s)
- H S Gewitz
- Forschungsstelle Vennesland der Max-Planck-Gesellschaft, Harnackstraße 23, D-1000, Berlin 33
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41
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Pistorius EK, Funkhouser EA, Voss H. Effect of ammonium and ferricyanide on nitrate utilization by Chlorella vulgaris. PLANTA 1978; 141:279-282. [PMID: 24414873 DOI: 10.1007/bf00388344] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/1978] [Accepted: 04/07/1978] [Indexed: 06/03/2023]
Abstract
It has been shown previously that added ammonium salts cause a cessation of nitrate utilization in some Chlorella species. It has also been shown that Chlorella vulgaris can form an inactivated nitrate reductase which is an HCN complex. In the present study, a comparison has been made of the rate of nitrate utilization and the rate of nitrate reductase inactivation in Chlorella vulgaris in response to the addition of ammonium salts and light-dark changes. The rate of formation of HCN-inactivated enzyme is too slow to account for the prompt inhibition of nitrate utilization caused by adding ammonium. In contrast, when nitrate utilization is inhibited by addition of ferricyanide to intact cells, the HCN-inactivated enzyme is promptly formed in vivo, and might account for the inhibition of nitrate utilization, though inhibition of nitrate uptake can not be excluded.
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Affiliation(s)
- E K Pistorius
- Forschungsstelle Vennesland der Max-Planck-Gesellschaft, Harnackstraße 23, D-1000, Berlin 33
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Sosa F, Ortega T, Barea J. Mutants from Chlamydomonas reinhardii affected in their nitrate assimilation capability. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/0304-4211(78)90052-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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44
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Sosa F, Cardenas J. NADPH as Electron Donor for Nitrate Reduction in Chlamydomonas reinhardi. ACTA ACUST UNITED AC 1977. [DOI: 10.1016/s0044-328x(77)80292-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Ortega T, Rivas J, Cárdenas J, Losada M. Metabolic interconversion of ferredoxin-nitrate reductase and NADP reductase of Nostoc muscorum. Biochem Biophys Res Commun 1977; 78:185-93. [PMID: 410410 DOI: 10.1016/0006-291x(77)91238-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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46
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Guerrero MG, Gutierrez M. Purification and properties of the NAD(P)H:nitrate reductase of the yeast Rhodotorula glutinis. BIOCHIMICA ET BIOPHYSICA ACTA 1977; 482:272-85. [PMID: 18182 DOI: 10.1016/0005-2744(77)90241-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The assimilatory nitrate reductase from the yeast Rhodotorula glutinus has been purified 740-fold, its different catalytic activities have been characterized and some inhibitors studied. The purified enzyme (150 units per mg protein) contains a cytochrome of the b-557 type. An S20,w of 7.9 S was found by the use of sucrose density gradient centrifugation, and a Stokes radius of 7.05 nm was determined by gel filtration. From these values, a molecular weight of 230 000 was estimated for the native enzyme. The purified preparation consisted of two electrophoretically distinguishable proteins, both of which exhibited nitrate reductase activity. The species with the higher electrophoretic mobility which represented the great majority of the total nitrate reductase gave a positive stain for heme and was shown to be composed of subunits with a molecular weight of about 118 000. Thus the molecule contains two subunits of the same size.
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Ortega T, Castillo F, Cárdenas J, Losada M. Inactivation by ammonia of the photosynthetic reduction of nitrate in Nostoc muscorum particles. Biochem Biophys Res Commun 1977; 75:823-31. [PMID: 405010 DOI: 10.1016/0006-291x(77)91456-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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48
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Vila R, Bárcena JA, Llobell A, Paneque A. Characterization of a membrane-bound nitrate reductase from Azotobacter chroococcum. Biochem Biophys Res Commun 1977; 75:682-8. [PMID: 193497 DOI: 10.1016/0006-291x(77)91526-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Villalobo A, Roldán JM, Rivas J. Assimilatory nitrate reductase from Acinetobacter calcoaceticus. Arch Microbiol 1977; 112:127-32. [PMID: 849099 DOI: 10.1007/bf00429324] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A soluble nitrate reductase from the bacterium Acinetobacter calcoaceticus grown on nitrate has been characterized. The reduction of nitrate to nitrite is mediated by an enzyme of 96000 molecular weight that can use as electron donors either viologen dyes chemically reduced with dithionite or enzymatically reduced with NAD(P)H, through specific diaphorases which utilize viologens as electron acceptors. Nitrate reductase activity is molybdenumdependent as shown by tungstate antagonistic experiments and is sensitive to--SH reagents and metal chelators such as KCN. The enzyme synthesis is repressed by ammonia. Moreover, nitrate reductase activity undergoes a quick inactivation either by dithionite and temperature or by dithionite in the presence of small amounts of nitrate. Cyanate prevents this inactivating process and can restore the activity once the inactivation had occurred, thus suggesting that an interconversion mechanism may participate in the regulation of Acinetobacter nitrate reductase.
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Vega JM, Kamin H. Spinach nitrite reductase. Purification and properties of a siroheme-containing iron-sulfur enzyme. J Biol Chem 1977. [DOI: 10.1016/s0021-9258(19)75183-7] [Citation(s) in RCA: 123] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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