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Photosystem I reactions

The reaction-center proteins for Photosystems I and II are labeled I and II, respectively. Key Z, the watersplitting enzyme which contains Mn P680 and Qu the primary donor and acceptor species in the reaction-center protein of Photosystem II Qi and Qt, probably plastoquinone molecules PQ, 6-8 plastoquinone molecules that mediate electron and proton transfer across the membrane from outside to inside Fe-S (an iron-sulfur protein), cytochrome f, and PC (plastocyanin), electron carrier proteins between Photosystems II and I P700 and Au the primary donor and acceptor species of the Photosystem I reaction-center protein At, Fe-S a and FeSB, membrane-bound secondary acceptors which are probably Fe-S centers Fd, soluble ferredoxin Fe-S protein and fp, is the flavoprotein that functions as the enzyme that carries out the reduction of NADP+ to NADPH. [Pg.9]

Lee I, Lee JW, Wamack RJ, Allison DP, Greenbaum E. Molecular electronics of a single photosystem I reaction center Studies with scanning tunneling microscopy and spectroscopy. Proc Natl Acad Sci USA 1995 97 1965-1969. [Pg.233]

Fe proteins in nitrogenase, 38 252-254 photosystem I reaction center X proteins, 38 251-252... [Pg.105]

Williams-Smith, D.L., Heathcote, P., Sihra, C.K. and Evans, M.C.W. 1978. Quantitative EPR measurements of the electron-transfer components of the photosystem I reaction centre. Biochem. J., 170. 365-371. [Pg.32]

The exclusive localisation of photosystem I in stroma lamellae was demonstrated directly by immunogold labelling of isolated thylakoids (Vallon et al. 1985, 1986, 1987b). Monoclonal antibodies raised against the barley photosystem I reaction centre (P700 Chla-Pl or CPI) are incubated with thin sections of wild type... [Pg.156]

Nechushtai, R., Muster, P., Binder, A., Liveanu, V. and Nelson, N. 1983. Photosystem I reaction center from the thermophilic cyanobacterium Mastigocladus laminosus. Proc. Acad. Sci. U.S.A., 80. 1179-1183. [Pg.176]

Itoh, S., Iwaki, M., and Ikegami, I. (2000) Modification of photosystem I reaction center by the extraction and exchange of chlorophylls and quinines, Biochim. Biophys. Acta 1507, 115-138. [Pg.203]

Antenna photosynthetic pigment complex that absorbs energy and transfers it to a reaction center Photosystem I reaction center from oxygen-evolving photosynthetic organisms that oxidizes plastocyanin and reduces NADP+... [Pg.3851]

Holzwarth AR, Muller MG, Niklas J, Lubitz W. Ultrafast transient absorption studies on Photosystem I reaction centers from Chlamy-domonas reinhardtii. 2 Mutations near the P700 reaction center... [Pg.1492]

P. E. Jensen, M. Gilpin, J. Knoetzel, and H.V. Scheller. 2000. The PSI-K subunit of photosystem I is involved in the interaction between light-harvesting complex I and the photosystem I reaction center core J. Biol. Chem. 275 24701-24708. (PubMed)... [Pg.824]

Fig. 12.1. Relative sizes of mitochondrial and chloroplast chromosomes and location of protein structural genes. The figure was constructed from published data [5,15,17,22,26-28]. The structural genes are marked by wide sections. Black areas code for proteins. White areas are introns. 0x1, OxII and OxIII are subunits I, II and III of cytochrome c oxidase. Cyt b, cytochrome b. Fo and Fo, are subunits 6 and 9 of the proton ATPase complex. In the chloroplast chromosome the arrows indicate the transcription direction and the size of the transcripts. CF,a, CFj/8, CFjc and CFoIII are subunits a, /S, t and III of the chloroplast proton ATPase complex [30]. PSII5], PSII44, and PSII34 are subunits of photosystem II reaction center with the corresponding molecular weights of 51000, 44000 and 34000. PSI70 is subunit I of photosystem I reaction center. Cyt /is cytochrome/ cyt is cytochrome b and b -flV is subunit IV of cytochrome b(,-f complex. Fig. 12.1. Relative sizes of mitochondrial and chloroplast chromosomes and location of protein structural genes. The figure was constructed from published data [5,15,17,22,26-28]. The structural genes are marked by wide sections. Black areas code for proteins. White areas are introns. 0x1, OxII and OxIII are subunits I, II and III of cytochrome c oxidase. Cyt b, cytochrome b. Fo and Fo, are subunits 6 and 9 of the proton ATPase complex. In the chloroplast chromosome the arrows indicate the transcription direction and the size of the transcripts. CF,a, CFj/8, CFjc and CFoIII are subunits a, /S, t and III of the chloroplast proton ATPase complex [30]. PSII5], PSII44, and PSII34 are subunits of photosystem II reaction center with the corresponding molecular weights of 51000, 44000 and 34000. PSI70 is subunit I of photosystem I reaction center. Cyt /is cytochrome/ cyt is cytochrome b and b -flV is subunit IV of cytochrome b(,-f complex.
Fig. 12.7. The onset of synthesis of the various subunits of photosystem I reaction center after the illumination of etiolated spinach seedlings. Spinach seedlings were grown in the dark. At time zero they were transferred to light. Leaves were removed at the indicated time points and processed as was described in Fig. 12.6 for yeast cells. The antibodies were against individual subunits of photosystem I reaction center. The amount of each subunit in light-grown spinach plants was taken as 100% [125]. Fig. 12.7. The onset of synthesis of the various subunits of photosystem I reaction center after the illumination of etiolated spinach seedlings. Spinach seedlings were grown in the dark. At time zero they were transferred to light. Leaves were removed at the indicated time points and processed as was described in Fig. 12.6 for yeast cells. The antibodies were against individual subunits of photosystem I reaction center. The amount of each subunit in light-grown spinach plants was taken as 100% [125].
Fig. 12.8. Schematic representation of events occurring during biogenesis of photosystem I reaction center. The subunits are designated as I to VII, the abbreviations are Ferr, ferredoxin P.C., plas-tocyanin A, Aj, Aj and A4, primary, secondary, tertiary and quaternary electron acceptors PMS, phenazine methosulfate DAD, diaminodurine. Fig. 12.8. Schematic representation of events occurring during biogenesis of photosystem I reaction center. The subunits are designated as I to VII, the abbreviations are Ferr, ferredoxin P.C., plas-tocyanin A, Aj, Aj and A4, primary, secondary, tertiary and quaternary electron acceptors PMS, phenazine methosulfate DAD, diaminodurine.
Partial reactions take place in which cytochrome b /f complex and partially assembled photosystem I reaction center are involved. [Pg.374]

Pigment Molecules, Cofactors, and Protein Subunits of the Photosystem-I Reaction Center... [Pg.419]

Three-dimensional Structure of the Photosystem-I Reaction Center. [Pg.419]

C Bengis and N Nelson (1977) Subunit structure of chioropiast photosystem i reaction center. J Bbl Chem 252 ... [Pg.430]

AN Webber and R Malkin (1990) Photosystem I reaction centre proteins contain leucine zipper motifs A proposed role in dimer formation. FEBS Lett 264 1 -4... [Pg.430]

K ssel, I D ry, G Igloi and R Maier (1990) A leucine-zipper motif in photosystem I. Plant Mol Biol 15 497-499 L Smart, PV Warren, JH Golbeck and L McIntosh (1993) Mutational analysis of the structure and biogenesis of the photosystem I reaction center in the cyanobacterium Synechococcus sp. PCC 6803. Proc Nat Acad Sci, USA 90 1132-1136... [Pg.430]

A. Isolation and Characterization of Photosystem-I Reaction-Center Complexes.432... [Pg.431]

B. Chemical Composition of an Intact Native Photosystem-I Reaction-Center Complex. 435... [Pg.431]

Fig. 2. (A) SDS-electrophoretogram of the photosystem-l reaction center (B) A model for the subunit structure and function of the PS-I reaction center in the thylakold membrane (bottom) a tabulation of the detected subunits designated with Roman numerals and the corresponding PsaX designations and the molecular masses. Figure source Bengis and Nelson (1977) Subunit structure of ch/orop/asf photosystem i reaction center. J Biol Chem 252 4566,4568. Fig. 2. (A) SDS-electrophoretogram of the photosystem-l reaction center (B) A model for the subunit structure and function of the PS-I reaction center in the thylakold membrane (bottom) a tabulation of the detected subunits designated with Roman numerals and the corresponding PsaX designations and the molecular masses. Figure source Bengis and Nelson (1977) Subunit structure of ch/orop/asf photosystem i reaction center. J Biol Chem 252 4566,4568.
Chapter 26 Photosystem-I Membrane, Complexes and Crystals II. Simplified Photosystem-I Reaction-Center Complexes... [Pg.437]

See other pages where Photosystem I reactions is mentioned: [Pg.231]    [Pg.219]    [Pg.22]    [Pg.80]    [Pg.237]    [Pg.17]    [Pg.156]    [Pg.156]    [Pg.161]    [Pg.239]    [Pg.219]    [Pg.222]    [Pg.354]    [Pg.354]    [Pg.372]    [Pg.419]    [Pg.423]    [Pg.431]    [Pg.431]    [Pg.439]   
See also in sourсe #XX -- [ Pg.409 ]



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