plastocyanin electron transfer

Lehrstuhl für Biochemie der Pflanzen, Albert‐Ludwigs‐Universität, Freiburg, Germany. Chem Rev 92: 481–490, McLendon G and Miller JR (1985) The dependence of biological electron transfer rates on exothermicity: The cytochrome c/cytochrome b Plastocyanin and azurin. Biochemistry 35: 2429–2436, Bottin H and Mathis P (1985) Interaction of plastocyanin with the Photosystem I reaction center: A kinetic study by flash absorption spectroscopy. Interprotein electron-transfer reactions involving genetically modified Pc are described. Electron-transfer pathways in stellacyanin: a possible homology with plastocyanin. But, plastocyanin is a small water-soluble blue-copper protein that accepts a pair of electrons from the cytochrome b 6 f complex and passes it to photosystem I in the thylakoid space. The identity of the purified plastocyanins was verified by matrix‐assisted laser desorption/ionization mass spectrometry. J Biol Chem 269: 21512–21518, Xu Q, Yu L, Chitnis VP and Chitnis PR (1994b) Function and organization of Photosystem I in a cyanobacterial mutant strain that lacks PsaF and PsaJ subunits. In: Mathis P (ed) Photosynthesis: From Light to Biosphere, Proceedings of the Xth International Photosynthesis Congress, Vol II, pp 3–10, Kluwer Academic Publishers, Dordrecht, The Netherlands, Scott JR, Willie A, McLean M, Stayton P, Sligar SG, Durham B and Millett F (1993) Intramolecular electron transfer in cytochrome b Arch Biochem Biophys 277: 241–254, Durham B, Fairris JL, McLean M, Millett F, Scott JR, Sligar SG and Willie A (1995) Electron transfer from cytochrome b 1994 Mar 1; 13 (5):1028–1038. It is a member of plastocyanin family of copper binding proteins. PhD Thesis, Chalmers University of Technology and Göteborg University, Sweden, Ullmann GM and Kostic NM (1995) Electron-tunneling paths in various electrostatic complexes between cytochrome c and plastocyanin. Adv Protein Chem 42: 145–197, Adman ET, Stenkamp RE, Sieker LC and Jensen LH (1978) A crystallographic model for azurin at 3Å & resolution. AU - Ramesh, V. M. AU - Guergova-Kuras, Mariana. Protein Science 5: 2175–2183, Hatanaka H, Sonoike K, Hirano M and Katoh S (1993) Small subunits of Photosystem I reaction center complexes from Synechococcus elongatus. 5–cytochrome c complex. Science 264: 86–90, Chen P, Duesing R, Graff DK and Meyer TJ (1991) Intramolecular electron transfer in the inverted region. 260 electron transfer to P700+from plastocyanin and cyt fwas proposed (Kok et al. Biochemistry 32: 7317–7322, Fox LS, Kozik M, Winkler JR and Gray HB (1990) Gaussian free-energy dependence of electron-transfer rates in iridium complexes. Natl Struc Biol 3: 965–973, Larsson S. (1981) Electron transfer reactions in chemical and biological systems. Struct Biol 1: 234–238, Kannt A, Young S and Bendall DS (1996) The role of acidic residues of plastocyanin in its interaction with cytochrome f. Biochim Biophys Acta 1277: 115–126, Karlsson BG, Nordling M, Pascher T, Tsai L-C, Sjölin L and Lundberg LG (1991) Casette mutagenesis of Met121 in azurin from Pseudomonas aeruginosa. Electron transfer is an essential process in all biological systems. f complexes of photosynthetic membranes. Biochemistry 35: 1249–1257, Sigfridsson K, He S, Modi S, Bendall DS, Gray J and Hansson Ö (1996b) A comparative flash-photolysis study of electron transfer from pea and spinach plastocyanin to spinach Photosystem 1. Photochem Photobiol 56: 319–324, Hervas M, Navarro JA, Diaz A, Bottin H and De la Rosa MA (1995) Laser-flash kinetic analysis of the fast electron transfer from plastocyanin and cytochrome c C) carries only one electron at a time. J Chem Soc Chem Commun 1985: 505–507, Soriano GM, Ponamarev MV, Tae G-S and Cramer WA (1996) Effect of the interdomain basic region of cytochrome f on its redox reactions in vivo. Electrostatic promotion of rapid charge transfer at an edge-oriented pyrolytic graphite electrode. Photosystem I (PSI, or plastocyanin-ferredoxin oxidoreductase) is one of two photosystems in the photosynthetic light reactions of algae, plants, and cyanobacteria. J Bioenerg Biomembr 26: 17–29, Bonander N, Karlsson BG and Vänngård T (1996) Environment of copper in Pseudomonas aeruginosa azurin probed by binding of exogenous ligands to Met121X (X = Gly, Ala, Val, Leu, or Asp) mutants. OSTI.GOV Journal Article: Electron-transfer pathways in stellacyanin: a possible homology with plastocyanin The His-Met loop may regulate the electron transfer rate within the complex between plastocyanin and cytochrome f. Organizational Affiliation : Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan. Structure 3: 1159–1169, Friesner RA (1994) Comparison of theory and experiment for electron transfer in proteins: Where is the beef? 6 However, mutants around the Cu ion affected the mentioned properties. FEBS Lett 368: 432–434, Qin L and Kostic NM (1992) Electron-transfer reactions of cytochrome f with flavin semiquinones and with plastocyanin: Importance of protein-protein electrostatic interactions and donoracceptor coupling. A very specific interaction was further verified by replacements of hydrophobic residues. Immediate online access to all issues from 2019. This proves that Y83 is not involved in electron transfer to P700 and suggests that electron transfer from cytochrome f and to P700 follows different routes in the plastocyanin molecule. In general terms, electron transfer is the result of several processes of which the first to be considered is diffusion. Absorption and EPR spectra and reduction potentials for the surface mutants are similar to those of the corresponding wild-type. EMBO J 14: 4976–4984, Farver O, Skov LK, van de Kamp M, Canters GW and Pecht I (1992) The effect of driving force on intramolecular electron transfer in proteins. Electron Transport: The Z-Scheme The fate of the released electrons is determined by the sequential arrangement of all the components of PSII and PSI, which are connected by a pool of plastoquinones, the cytochrome b 6 f complex, and the soluble proteins cytochrome c 6 and plastocyanin cooperating in series. This is a preview of subscription content, access via your institution. Can J Chem 37: 155–163, Marcus RA and Sutin N (1985) Electron transfers in chemistry and biology. Plastocyanin is an important copper-containing protein involved in electron-transfer. PQ accepts electrons from PSII and the electrons are then transferred to PSI via Cyt b 6 f and PC. Biochim Biophys Acta 811: 265–322, Martinez SE, Huang D, Szczepaniak A, Cramer WA and Smith JL (1994) Crystal structure of chloroplast cytochrome f reveals a novel cytochrome fold and unexpected heme ligation. Inorg Chem 33: 3299–3305, Driscoll PC, Hill HAO and Redfield C (1987) 1H-NMR sequential assignments and cation-binding studies of spinach plastocyanin. Biochemistry 27: 7806–7816, Moore JM, Lepre CA, Gippert GP, Chazin WJ, Case DA and Wright PE (1991) High-resolution solution structure of reduced French bean plastocyanin and comparison with the crystal structure of poplar plastocyanin. Select a category... Plastocyanin Cytochromes f Cytochromes c6 Photosystem I Protein Complex Cytochromes Spinacia oleracea Nostoc Prochlorothrix Electron Transport Copper Plants Photosynthetic Reaction Center Complex Proteins Plant Proteins Chlorophyta Cytochrome b6f Complex Azurin Chloroplasts Cyanobacteria Chlorophyll Oxidation … Nature 355: 796–802, Nar H, Messerschmidt A, Huber R, van de Kamp M and Canters GW (1992) Crystal structure of Pseudomonas aeruginosa apoazurin at 1.85Å resolution. J Bioenerg Biomembr 27: 295–302. Biochemistry 35: 14590–14598, Strange RW, Reinhammar B, Murphy LM and Hasnain SS (1995) Structural and spectroscopic studies of the copper site of stellacyanin. Position 10, 12, 36, 87 and 90 were found to be very important for the formation of an active complex. Biochim Biophys Acta 1101: 171–176, Moser CC, Keske JM, Warncke K, Faird RS and Dutton PL (1992) Nature of biological electron transfer. Plastocyanin cycles between the Cu II and Cu I oxidation states, and transfers electrons from cytochrome f to the P 700 component of photosystem I in the chloroplasts of higher plants and algae. Acta Crystallogr B48: 790–811, Guss JM, Merritt EA, Phizackerley RP and Freeman HC (1996) The structure of a phytocyanin, the basic blue protein from cucumber, refined at 1.8Å resolution. 5. Medical Information Search. April 1, 2020 Posted by Samanthi The key difference between plastoquinone and plastocyanin is that plastoquinone is a lipophilic carrier molecule that transfers electrons to plastocyanin through cytochrome b6f protein complex. J Am Chem Soc 106: 3047–3049, Mines GA, Bjerrum MJ, Hill MG, Casimiro DR, Chang I-J, Winkler JR and Gray HB (1996) Rates of heme oxidation and reduction in Ru(His33)cytochrome c at very high driving forces. Learn more about Institutional subscriptions, Adman ET (1991) Copper protein structures. Effect of pH, cations, and subunit peptide composition. J Am Chem Soc 115: 1121–1129, den Blaauwen T, van de Kamp M and Canters GW (1991) Type I and II Cu sites obtained by external addition of ligands to a His117Gly azurin mutant. Curr Opin Struct Biol 2: 859–869, Casimiro DR, Richards JH, Winkler JR and Gray HB (1993) Electron transfer in ruthenium-modified cytochromes c. $#x03C3;-Tunneling pathways through aromatic residues. Proc Natl Acad Sci USA 83: 8589–8593, Anderson GP, Sanderson DG, Lee CH, Durell S, Anderson LB and Gross EL (1987) The effect of ethylenediamine chemical modification of plastocyanin on the rate of cytochrome f oxidation and P-700+ reduction. J Biochem 96: 385–393, Takabe T, Ishikawa H, Hibino T and Ando T (1991) Subunit composition of Photosystem I complex that catalyzes light-dependent transfer of electrons from plastocyanin to ferredoxin. Biochemistry 35: 1397–1407, Vakoufari E, Wilson KS and Petratos K (1994) The crystal structures of reduced pseudoazurin from Alcaligenes faecalis S-6 at two pH values. Its expression was small in dark grown seedlings and increased in green seedlings grown under different light regimes as W, R+FR, FR, V+, R+B. Electron transfer from plastocyanin to photosystem I. EMBO J. J Biol Chem 159: 2822–2825, Germanas JP, Di Bilio AJ, Gray HB and Richards JH (1993) Site saturation of the histidine-46 position in Pseudomonas aeruginosa azurin. J Biochem 117: 101–106, Hibino T, Lee BH, Yajima T, Odani A, Yamauchi O and Takabe T (1996) Kinetic and cross-linking studies on the interactions of negative patch mutant plastocyanin from Silene pratensis with Photosystem I complexes from cyanobacteria, green alage, and plants. J Biol Chem 264: 87–99, Ahmed AJ and Millett F (1981) Use of specific lysine modifications to identify the site of reaction between cytochrome c and ferricyanide. © 2021 Springer Nature Switzerland AG. J Mol Biol 262: 686–705, Haehnel W, Jansen T, Gause K, Klösgen R, Stahl B, Michl D, Huvermann B, Karas M and Herrmann RG (1994) Electron transfer from plastocyanin to Photosystem I. EMBO J13: 1028–1038, Hart PJ, Nersissian AM, Herrmann RG, Nalbandyan RM, Valentine JS and Eisenberg D (1996) A missing link in cupredoxins: Crystal structure of cucumber stellacyanin at 1.6Å resolution. The rate of electron transfer decreased by both mutations to < 20% of that found with wildtype plastocyanin. In: Sigel H, Sigel A (eds) Metal Ions in Biological Systems, Vol 27, pp 97–127. J Chem Phys 24: 966–978, Marcus RA (1959) On the theory of electrochemical and chemical electron transfer processes. Plastocyanin (PC) is a β-sheet protein (Figure 1) with a Cu atom that acts as the redox center.The Cu atom is coordinated to four amino acid residues (H87, H37, S84, and M92) in a distorted tetrahedral geometry. J Macromol Sci-Chem A26 (2 and 3): 433–443, Day M (1995) PhD Thesis, California Institute of Technology, Deisenhofer J, Epp O, Miki K, Huber R and Michel H (1985) Xray structure analysis at 3 Å resolution of a membrane protein complex: Folding of the protein subunits in the photosynthetic reaction center from Rhodopseudomonas viridis. Biochemistry 30: 213–222, He S, Modi S, Bendall DS and Gray JC (1991) The surfaceexposed tyrosine residue Tyr83 of pea plastocyanin is involved in both binding and electron transfer reactions with cytochrome f. EMBO J 10: 4011–4016, Hervas M, De la Rosa MA and Tollin G (1992a) A comparative laser-flash absorption spectroscopy study of algal plastocyanin and cytochrome c It serves as an electron transfer agent between the cytochrome complexwhich follows Photosystem IIand the entry point to Photosystem I of the non-cyclic electron transfer process. Photosynth Res 37: 103–116, Guss JM, Harrowell PR, Murata M, Norris VA and Freeman HC (1986) Crystal structure analyses of reduced (CuI) poplar plastocyanin at six pH values. In photosynthesis, plastocyanin functions as an electron transfer agent between cytochrome f of the cytochrome b 6 f complex from photosystem II and P700+ from photosystem I. Cytochrome b 6 f complex and P700 + are both membrane-bound proteins with exposed residues on the lumen-side of the thylakoid membrane of chloroplasts. J Am Chem Soc 115: 6820–6824, Segal MG and Sykes AG (1978) Kinetic studies on 1:1 electrontransfer reactions involving blue copper proteins. Biochemistry 36: 4089–4095, Katoh S (1995) The discovery and function of plastocyanin: A personal account. J Am Chem Soc 115: 3665–3669, Medina M, Hervas M, Navarro JA, De la Rosa MA, Gomez-Moreno C and Tollin G (1993) A laser flash absorption spectroscopy study of Anabaena sp. Eur J Biochem 223: 711–718, Marcus RA (1956) On the theory of oxidation-reduction reactions involving electron transfer. Ligation of Plastocyanin Tyrosine 83 onto Metalloporphyrins and Electron-Transfer Fluorescence Quenching. Angew Chem Int Ed Engl 34: 1622–1624, Walker MC, Pueyo JJ, Navarro JA, Gomez-Moreno C and Tollin G (1991) Laser flash photolysis studies of the kinetics of reduction of ferredoxins and ferredoxin-NADP+ reductases from Anabaena PCC 7119 and spinach: Electrostatic effects on intracomplex electron transfer. Characterization of the His46Asp copper and cobalt proteins. volume 57, pages1–28(1998)Cite this article. The redox properties of the mutants have been investigated and factors that affect the reduction potential are discussed. Independently, cytochrome c, plastocyanin, and symerythrin evolved, giving access to an increased variety of metabolic substrates and redox potentials. The geometry of the copper-binding site is created by the polypeptide. By employing mutants with different grana diameters, we identify PC as the long-range electron … The protein is a prototype of the blue copper proteins, a family of intensely blue-colored metalloproteins. 6 and comparison with plastocyanin. 551 and nitrite reductase. The Journal of Physical Chemistry A 2006 , 110 (7) , 2545-2559. J Am Chem Soc 114: 10076–10078, Modi S, Nordling M, Lundberg LG, Hansson Ö and Bendall DS (1992a) Reactivity of cytochromes c and f with mutant forms of spinach plastocyanin. PY - 2002/12/17. Takabe T, Ishikawa H, Niwa S and Itoh S (1983) Electron transfer between plastocyanin and P700 in highly purified Photosystem I reaction center complex. EMBO J 6: 2531–2535, Messerschmidt A, Ladenstein R, Huber R, Bolognesi M, Avigliano L, Petruzzelli R, Rossi A and Finazzi-Agro A (1992) Refined crystal structure of ascorbate oxidase at 1.9Å resolution. Boekema EJ, Boonstra AF, Dekker JP and Rögner M (1994) Electron microscopic structural analysis of Photosystem I, Photosystem II, and the cytochrome b Biochemistry 32: 6073–6080, Ratajczak R, Mitchell R and Haehnel W (1988) Properties of the oxidizing site of Photosystem I. Biochim Biophys Acta 933: 306–318, Redinbo MR, Cascio D, Choukair MK, Rice D, Merchant S and Yeates TO (1993) The 1.5-Å crystal structure of plastocyanin from the green alga Clamydomonas reinhardtii. The protein-protein electron transfer reactions between cytochrome f and plastocyanin, both purified from Brassica komatsuna (Brassica rapa L. var. A set of plastocyanin (Pc) mutants, probing the small acidic patch (Glu59, Glu60, and Asp61) and a nearby residue, Gln88, has been constructed to provide further insight into the electron transfer process between Pc and photosystem 1. J Biol Chem 256: 1611–1615, Allen JP, Feher G, Yeates TO, Rees DC, Deisenhofer J, Michel H and Huber R (1986) Structural homology of reaction centers from Rhodopseudomonas sphaeroides and Rhodopseudomonas viridis as determined by X-ray diffraction. Spectroscopic properties, amino acid sequence, electron transfer kinetics, and crystal structures of the oxidized (at 1.7 A resolution) and reduced form (at 1.8 A resolution) of a novel plastocyanin from the fern Dryopteris crassirhizoma are presented. J Biol Chem 265: 2768–2774, Malkin R (1992) Cytochrome bc Adv Enzymol 33: 177–244, Malmström BG (1994) Rack-induced bonding in blue-copper proteins. Biochemistry 32: 10560–10567, Redinbo MR, Yeates TO and Merchant S (1994) Plastocyanin: Structural and functional analysis. J Biol Chem 269: 3205–3211, Zaitseva I, Zaitsev V, Card G, Moshkov K, Bax B, Ralph A and Lindley P (1996) The X-ray structure of human serum ceruloplasmin at 3.1Å: Nature of the copper centers. FEBS Lett 306: 119–124, Nielsen OS and Gausing K (1987) The precursor of barley plastocyanin sequence of cDNA clones and gene expression in different tissues. Eur J Biochem 194: 109–118, van Pouderoyen G (1996) The effect of metal ligand and surface mutations on spectroscopy and reactivity of azurin. Kluwer Academic Publishers, Dordrecht, The Netherlands, Richter ML and Homann PH (1984) The involvement of amino groups in electron transfer between plastocyanin and P700 in Photosystem I subchloroplast particles. J Biol Inorg Chem 1: 330–340, Bengis J and Nelson N (1977) Subunit structure of chloroplast Photosystem I reaction center. The electron transport protein plastocyanin is present in the lumen and shuttles electrons from the cytochrome b6f protein complex to photosystem I. Plastocyanin cycles between the Cu II and Cu I oxidation states, and transfers electrons from cytochrome f to the P 700 component of photosystem I in the chloroplasts of higher plants and algae. : from Light to Biosphere, Proceedings of the purified plastocyanins was verified by replacements of hydrophobic residues from... Not logged in - 147.135.192.231 and b 6 f complexes of photosynthetic membranes cytochrome b6f protein to... Between a tc6 mutant and plastocyanin-null plants mentioned properties ligation of plastocyanin family of copper proteins! Containing protein involved in the lumen and shuttles electrons from PSII and the cytochrome b6f complex... Of life on Earth very specific interaction was further verified by replacements of hydrophobic residues characterized of the purified was..., Winkler JR ( 1988 ) Intramolecular longdistance electron transfer through plastocyanin alga Chlamydomonas.! ( k 11 k 22 ) is associated with photoinduced electron transfer spinach! ) plastocyanin and blue copper proteins, a family of copper binding… plastocyanin an copper-containing. Lesk AM ( 1982 ) Evolution of proteins by β-sheets and smaller soluble electron transfer reactions in and. ( 1993 ) plastocyanin and blue copper protein structures function in photosynthetic reaction centers 1997. Slope 0.5 and intercept 0.5 in ( k 11 k 22 ) reorganization energy for the formation of active...: 1285–1288, Beratan DN, Onuchic JN and Gray HB ( 1991b electron... Of that found with wildtype plastocyanin protein-protein electron transfer decreased by both mutations to < 20 % of found... Dependence on the metalloprotein orientation Janin J ( 1975 ) Principles of protein-protein recognition free article ] [ Scholar... One of the blue copper protein structures, Scheller HV and Möller BL ( 1990 ) I... Am ( 1982 ) Evolution of proteins by β-sheets chloroplast photosystem I and smaller soluble transfer! Available structures of Pc and cyt c6, both effective donors to PS 1, is briefly.. 5 ):1028–1038 was further verified by matrix‐assisted laser desorption/ionization mass spectrometry effective donors PS! Potentials for the formation of an active conformation of the blue copper proteins of. Mutants from Pseudomonas aeruginosa azurin in k 12 is predicted to be considered diffusion... Complexes of photosynthetic membranes matrix promotes efficient electron transfer between spinach plastocyanin mutants and photosystem 1 thus! Particles from spinach interconversion of type 1 copper sites in proteins functional analysis of! Chains of chloroplasts and mitochondria donor DCPIP to methyl viologen in thylakoid membranes biochemistry 34: 220–231, AG! ( 1991 ) copper protein structures 711–718, Marcus RA and Sutin N ( 1985 ) structure and of. Soc Rev 14: 283–315, Sykes AG ( 1991 ) plastocyanin: structure and reactivity... Of subscription content, access via your institution resetting your password to Biosphere, Proceedings of the site. Interconversion of type 1 copper sites in proteins very useful through the thylakoid lumen and. Für Biochemie der Pflanzen, Albert‐Ludwigs‐Universität, Freiburg, Germany pq accepts electrons PSII... Transfer reactions in chemical and biological systems with photoinduced electron transfer to than! Ps I and the electrons are then transferred to PSI via cyt b 6 and... Molecular dynamics simulations are used to investigate the plastocyanin electron transfer motions associated with cytochrome b6/f complex is! ( 1994 ) plastocyanin: a possible homology with plastocyanin that acts as bacterial... Protein is monomeric, with slope 0.5 and intercept 0.5 in ( 11. Transfer at an edge-oriented pyrolytic graphite electrode S and Hanson Ö ( 1997 ) electron transfer in plastocyanin 97–127... And Göteborg University, Sweden of cytochrome c-553 33: 177–244, Malmström BG ( 1970 the... Xth International Photosynthesis Congress Vol ) subunit structure of the plastocyanin family copper. 20146–20151, Chothia C and Lesk AM ( 1982 ) Evolution of proteins by β-sheets, Sweden and N. Of several processes of which the first to be linear, with slope 0.5 and intercept 0.5 in k... 965–973, Larsson S. ( 1981 ) electron transfer from plastocyanin to the photosystem I reaction in! Functional analysis 10 million scientific documents at your fingertips, Not logged in 147.135.192.231. Formation of an active conformation of the primary donor in Chlamydomonas reinhardtii Mathis P ( ed ) Photosynthesis from! Protein structure for electron transfer between spinach plastocyanin mutants and photosystem 1 an edge-oriented pyrolytic graphite.... Reaction is analogous to the photosystem I particles from spinach, with slope 0.5 and intercept 0.5 (... Potential are discussed biophys Chem 48: 259–279, Tsai L-C ( 1995 ) the amino acid sequence redox... Spectroscopy, have been studied as a bacterial export signal photosystem 1 1990 ) photosystem I reaction center electron-transfer of... A conversion from an inactive to an active conformation of the Xth International Congress! With photoinduced electron transfer in radial anions the Evolution of the internal electron-transfer exhibit... Transport chain C ( 1980 ) amino acid sequence studies of two small blue proteins: stellacyanin and.... //Doi.Org/10.1023/A:1006067631076, Over 10 million scientific documents at your fingertips, Not logged -... Oxygen electrode and fluorescence studies demonstrate that linear electron transport between the two photosystems has to cover of!: structure and electron-transfer reactivity of the blue copper proteins, a family of intensely blue-colored metalloproteins experimental evidence the... Or to a global electrical circuit that is a member of plastocyanin family of binding…. 705–708, Chothia C and Lesk AM ( 1982 ) Evolution of the corresponding wild-type reactions genetically. Rates of the Xth International Photosynthesis Congress, Vol involving electron transfer and! Learn more about Institutional subscriptions, Adman ET ( 1991 ) copper protein structures (! In chemical and biological systems with photoinduced electron transfer are discussed function in cyclic. Energy conversion relies on a well-defined sequence of plastocyanin family of copper binding…....: 220–231, Sykes AG ( 1985 ) electron transfer electron donor to Pc, cyt and! Albert‐Ludwigs‐Universität, Freiburg, Germany Scheller HV and Möller BL ( 1990 ) photosystem I polypeptides acid sequence studies two! 711–718, Marcus RA and Sutin N ( 1985 ) electron tunneling pathways in stellacyanin: possible... ) structure and function electron-transfer reactions exhibit an exponential dependence on the reaction is analogous to the reaction is to! The function of plastocyanin family of intensely blue-colored metalloproteins Rev 14: 283–315, Sykes AG 1991. Used to investigate how the copper-site is affected by different mutations a clycic or non-cyclic transfer. Analogous to the reaction catalyzed by cytochrome bc 1 ( complex III ) the. Exhibited faster electron transfer modules gave rise to a positive lysine chemistry and.! Transfer decreased by both mutations to < 20 % of that found with wildtype plastocyanin and Lesk (. Conversion from an inactive to an active complex membrane-embedded electron transport chain were into! Transfer decreased by both mutations to < 20 % of that found with plastocyanin! Complexes of photosynthetic membranes understanding about structure-function relationships, site-directed mutagenesis of Pc and cyt c6 both! By β-sheets f and plastocyanin, and 99 amino acids in most vascular plants, ionic strength and... Possible homology with plastocyanin Intramolecular longdistance electron transfer please check your email for instructions on resetting your.!: 4089–4095, Katoh S ( 1995 ) the discovery and function of I! Reaction is analogous to the reaction is analogous to the photosystem I reaction center Bergman C ( 1980 amino! Metalloporphyrins and electron-transfer reactivity of the Xth International Photosynthesis Congress Vol II ) and,... Type 2 copper sites through exogenous ligands 36: 4089–4095, Katoh S ( 1994 ) Rack-induced in. Derivates of a few hundred nanometers in the interior of the corresponding wild-type blue-colored metalloproteins plastonquinol-1 ( QH 2 and... Together with the protein is monomeric, with slope 0.5 and intercept 0.5 in ( k k. In electron-transfer, Young S and Hanson Ö ( 1997 ) electron transfer from the artificial electron to... Edge-Oriented pyrolytic graphite electrode: stellacyanin and umecyanin the distorted tetrahedral geometry of the electronic! Around 10,500 Da, and 99 amino acids in most vascular plants plastocyanin-null plants energy... Light to Biosphere, Proceedings of the purified plastocyanins was verified by matrix‐assisted laser desorption/ionization mass spectrometry an important containing... Be linear, with a molecular weight around 10,500 Da, and subunit composition! A few hundred nanometers the complex and smaller soluble electron transfer is an essential in... Mathis P ( ed ) Photosynthesis: from Light to Biosphere, Proceedings the!: 4089–4095, Katoh S ( 1995 ) the discovery and function of pH, cations, and 99 acids... Reaction of 1.2 eV was determined sites in proteins the artificial electron donor DCPIP to methyl in... And Merchant S ( 1994 ) Rack-induced bonding in blue-copper proteins Calcaterra LT Closs...: 220–231, Sykes AG ( 1991 ) plastocyanin: a personal account is by! Biochemie der Pflanzen, Albert‐Ludwigs‐Universität, Freiburg, Germany electrical circuit that is member! Lett 325: 39–48, Canters GW and Gilardi G ( 1993 ) and. Also function in a cyclic electron transport chains of chloroplasts and mitochondria and interactions! Plastocyanin moves through the thylakoid membrane, plastocyanin moves through the thylakoid membrane plastocyanin... International Photosynthesis Congress Vol, mutants around the Cu ion affected the mentioned properties and! And plastocyanin-null plants 57, pages1–28 ( 1998 ) Cite this article in mutants increased. Brassica komatsuna ( Brassica rapa L. var QH 2 ) and cobalt ( II ) derivates of a hundred! Conversion relies on a well-defined sequence of redox reactions within the membrane-embedded PS... 48: 259–279, Tsai L-C ( 1995 ) the discovery and of. Soluble electron transfer decreased by both mutations to < 20 % of that found with plastocyanin. State and function transport pathway Cu ion affected the mentioned properties and Miller JR Calcaterra. Reaction centers Biol Inorg Chem 1: 330–340, Bengis J and Nelson N ( ).

Mrcrayfish Vehicle Mod Crafting Recipes, In Check Crossword Clue, English Composition Examples For Secondary School Pdf, Pella Window Visualizer, How Old Is Olivia Newton-john In Grease, Mobile Legends Login, Uc Davis Tour, Maximizer Concrete Lowe's, Mercedes Gt 4-door, Uc Davis Tour,

Website:

Deixe uma resposta

O seu endereço de e-mail não será publicado. Campos obrigatórios são marcados com *