Search Results - "Chitnis, Parag R."

Mutational analysis of photosystem I of Synechocystis sp. PCC 6803: the role of four conserved aromatic residues in the j-helix of PsaB by Xu, Wu, Wang, Yingchun, Taylor, Eric, Laujac, Amelie, Gao, Liyan, Savikhin, Sergei, Chitnis, Parag R

“…Photosystem I is the light-driven plastocyanin-ferredoxin oxidoreductase in the photosynthetic electron transfer of cyanobacteria and plants. Two histidyl…”
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Evidence for Asymmetric Electron Transfer in Cyanobacterial Photosystem I:  Analysis of a Methionine-to-Leucine Mutation of the Ligand to the Primary Electron Acceptor A0 by Cohen, Rachel O, Shen, Gaozhong, Golbeck, John H, Xu, Wu, Chitnis, Parag R, Valieva, Alfia I, van der Est, Art, Pushkar, Yulia, Stehlik, Dietmar

“…The X-ray crystal structure of photosystem I (PS I) depicts six chlorophyll a molecules (in three pairs), two phylloquinones, and a [4Fe-4S] cluster arranged…”
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Identification and bioinformatic analysis of the membrane proteins of synechocystis sp. PCC 6803 by Wang, Yingchun, Xu, Wu, Chitnis, Parag R

“…The membranes of Synechocystis sp. PCC 6803 play a central role in photosynthesis, respiration and other important metabolic pathways. Comprehensive…”
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PHOTOSYSTEM I: Function and Physiology by Chitnis, Parag R

“…Photosystem I is the light-driven plastocyanin-ferredoxin oxidoreductase in the thylakoid membranes of cyanobacteria and chloroplasts. In recent years,…”
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Kinetics of Charge Separation and A0 - → A1 Electron Transfer in Photosystem I Reaction Centers by Savikhin, Sergei, Xu, Wu, Martinsson, Peter, Chitnis, Parag R, Struve, Walter S

“…The charge separation P700*A0 → P700+A0 - and the subsequent electron transfer from the primary to secondary electron acceptor have been studied by subtracting…”
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FTIR Spectroscopy of Synechocystis 6803 Mutants Affected on the Hydrogen Bonds to the Carbonyl Groups of the PsaA Chlorophyll of P700 Supports an Extensive Delocalization of the Charge in P700 by Pantelidou, Maria, Chitnis, Parag R, Breton, Jacques

“…P700, the primary electron donor of photosystem I is an asymmetric dimer made of one molecule of chlorophyll a‘ (PA) and one of chlorophyll a (PB). While the…”
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Electron transfer in cyanobacterial photosystem I: II. Determination of forward electron transfer rates of site-directed mutants in a putative electron transfer pathway from A0 through A1 to FX by Xu, Wu, Chitnis, Parag R, Valieva, Alfia, van der Est, Art, Brettel, Klaus, Guergova-Kuras, Mariana, Pushkar, Yulia N, Zech, Stephan G, Stehlik, Dietmar, Shen, Gaozhong, Zybailov, Boris, Golbeck, John H

“…The directionality of electron transfer in Photosystem I (PS I) is investigated using site-directed mutations in the phylloquinone (QK) and FX binding regions…”
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Electrochromic Shift of Chlorophyll Absorption in Photosystem I from Synechocystis sp. PCC 6803: A Probe of Optical and Dielectric Properties around the Secondary Electron Acceptor by Dashdorj, Naranbaatar, Xu, Wu, Martinsson, Peter, Chitnis, Parag R., Savikhin, Sergei

“…Nanosecond absorption dynamics at ∼685 nm after excitation of photosystem I (PS I) from Synechocystis sp. PCC 6803 is consistent with electrochromic shift of…”
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PsaL subunit is required for the formation of photosystem I trimers in the cyanobacterium Synechocystis sp. PCC 6803 by Chitnis, Vaishali P., Chitnis, Parag R.

“…When membranes of the wild type strain of the cyanobacterium Synechocystis sp. PCC 6803 were solubilized with detergents and fractionated by sucrose-gradient…”
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Evidence for Hydrogen Bond Formation to the PsaB Chlorophyll of P700 in Photosystem I Mutants of Synechocystis sp. PCC 6803 by Breton, Jacques, Chitnis, Parag R, Pantelidou, Maria

“…P700, the primary electron donor of photosystem I, is an asymmetric dimer made of one molecule of chlorophyll a‘ (PA) and one of chlorophyll a (PB) that are…”
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Insertional Inactivation of the menG Gene, Encoding 2-Phytyl-1,4-Naphthoquinone Methyltransferase of Synechocystis sp. PCC 6803, Results in the Incorporation of 2-Phytyl-1,4-Naphthoquinone into the A1 Site and Alteration of the Equilibrium Constant between A1 and FX in Photosystem I by Sakuragi, Yumiko, Zybailov, Boris, Shen, Gaozhong, Jones, A. Daniel, Chitnis, Parag R, van der Est, Art, Bittl, Robert, Zech, Stephan, Stehlik, Dietmar, Golbeck, John H, Bryant, Donald A

“…A gene encoding a methyltransferase (menG) was identified in Synechocystis sp. PCC 6803 as responsible for transferring the methyl group to…”
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Associating protein activities with their genes: rapid identification of a gene encoding a methylglyoxal reductase in the yeast Saccharomyces cerevisiae by Chen, Ching‐Nen, Porubleva, Larysa, Shearer, Georgia, Svrakic, Maja, Holden, Lauren G., Dover, James L., Johnston, Mark, Chitnis, Parag R., Kohl, Daniel H.

“…Methylglyoxal is associated with a broad spectrum of biological effects, including cytostatic and cytotoxic activities. It is detoxified by the glyoxylase…”
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The Two Histidine Axial Ligands of the Primary Electron Donor Chlorophylls (P700) in Photosystem I Are Similarly Perturbed upon P700+ Formation by Breton, Jacques, Xu, Wu, Diner, Bruce A, Chitnis, Parag R

“…The extent of delocalization of the positive charge in the oxidized dimer of chlorophyll (Chl) constituting P700, the primary electron donor of photosystem I…”
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The menD and menE homologs code for 2-succinyl-6-hydroxyl-2,4-cyclohexadiene-1-carboxylate synthase and O-succinylbenzoic acid–CoA synthase in the phylloquinone biosynthetic pathway of Synechocystis sp. PCC 6803 by Wade Johnson, T, Naithani, Sushma, Stewart, Charles, Zybailov, Boris, Daniel Jones, A, Golbeck, John H, Chitnis, Parag R

“…The genome of the cyanobacterium Synechocystis sp. PCC 6803 contains genes identified as menD and menE, homologs of Escherichia coli genes that code for…”
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Ultrafast Primary Processes in Photosystem I of the Cyanobacterium Synechocystis sp. PCC 6803 by Savikhin, Sergei, Xu, Wu, Soukoulis, Victor, Chitnis, Parag R., Struve, Walter S.

“…Ultrafast primary processes in the trimeric photosystem I core antenna-reaction center complex of the cyanobacterium Synechocystis sp. PCC 6803 have been…”
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Proteins of the cyanobacterial photosystem I by Xu, Wu, Tang, Huadong, Wang, Yingchun, Chitnis, Parag R

“…Cyanobacterial photosystem (PS) I is remarkably similar to its counterpart in the chloroplast of plants and algae. Therefore, it has served as a prototype for…”
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Thermodynamics of Electron Transfer in Oxygenic Photosynthetic Reaction Centers:  A Pulsed Photoacoustic Study of Electron Transfer in Photosystem I Reveals a Similarity to Bacterial Reaction Centers in both Volume Change and Entropy by Hou, Jian-Min, Boichenko, Vladimir A, Wang, Ying-Chun, Chitnis, Parag R, Mauzerall, David

“…The thermodynamic properties of electron transfer in biological systems are far less known in comparison with that of their kinetics. In this paper the…”
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Function and organization of Photosystem I polypeptides by Chitnis, P R, Xu, Q, Chitnis, V P, Nechushtai, R

“…Photosystem I functions as a plastocyanin:ferredoxin oxidoreductase in the thylakoid membranes of chloroplasts and cyanobacteria. The PS I complex contains the…”
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Electronic Spectra of PS I Mutants: The Peripheral Subunits Do Not Bind Red Chlorophylls in Synechocystis sp. PCC 6803 by Soukoulis, Victor, Savikhin, Sergei, Xu, Wu, Chitnis, Parag R., Struve, Walter S.

“…Steady-state fluorescence and absorption spectra have been obtained in the Q y spectral region (690–780 nm and 600–750 nm, respectively) for several…”
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Targeted inactivation of the psaK1, psaK2 and psaM genes encoding subunits of Photosystem I in the cyanobacterium Synechocystis sp. PCC 6803 by Naithani, S, Hou, J M, Chitnis, P R

“…PsaK and PsaM are small, integral membrane proteins, which are associated with the Photosystem I complexes of cyanobacteria. The complete genome sequence of…”
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