Search Results - "Vrettos, John S."

Characterization of the O2-Evolving Reaction Catalyzed by [(terpy)(H2O)MnIII(O)2MnIV(OH2)(terpy)](NO3)3 (terpy = 2,2‘:6,2‘ ‘-Terpyridine) by Limburg, Julian, Vrettos, John S, Chen, Hongyu, de Paula, Julio C, Crabtree, Robert H, Brudvig, Gary W

“…The complex [(terpy)(H2O)MnIII(O)2MnIV(OH2)(terpy)](NO3)3 (terpy = 2,2‘:6,2‘ ‘-terpyridine) (1) catalyzes O2 evolution from either KHSO5 (potassium oxone) or…”
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Speciation of the Catalytic Oxygen Evolution System:  [MnIII/IV 2(μ-O)2(terpy)2(H2O)2](NO3)3 + HSO5 by Chen, Tagore, Ranitendranath, Olack, Gerard, Vrettos, John S, Weng, Tsu-Chien, Penner-Hahn, James, Crabtree, Robert H, Brudvig, Gary W

“…[MnIII/IV 2(μ-O)2(terpy)2(OH2)2](NO3)3 (1, where terpy = 2,2‘:6‘2‘ ‘-terpyridine) + oxone (2KHSO5·KHSO4·K2SO4) provides a functional model system for the…”
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functional model for O-O bond formation by the O2-evolving complex in photosystem II by Limburg, J, Vrettos, J.S, Liable-Sands, L.M, Rheingold, A.L, Crabtree, R.H, Brudvig, G.W

“…The formation of molecular oxygen from water in photosynthesis is catalyzed by photosystem II at an active site containing four manganese ions that are…”
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Lyophilization cycle development for a high-concentration monoclonal antibody formulation lacking a crystalline bulking agent by Colandene, James D, Maldonado, Linda M, Creagh, Alma T, Vrettos, John S, Goad, Kenneth G, Spitznagel, Thomas M

“…An efficient freeze-dry cycle was developed for a high concentration monoclonal antibody formulation lacking a crystalline bulking agent. The formulation, at…”
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Water oxidation chemistry of photosystem II by Vrettos, John S., Brudvig, Gary W.

“…The O…”
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High-Frequency EPR Study of a New Mononuclear Manganese(III) Complex:  [(terpy)Mn(N3)3] (terpy = 2,2‘:6‘,2‘ ‘-Terpyridine) by Limburg, Julian, Vrettos, John S, Crabtree, Robert H, Brudvig, Gary W, de Paula, Julio C, Hassan, Alia, Barra, Anne-Laure, Duboc-Toia, Carole, Collomb, Marie-Noëlle

“…The isolation and structural characterization of [(terpy)MnIII(N3)3], complex 1, is reported (terpy = 2,2‘:6‘,2‘ ‘-terpyridine). Complex 1, a product of the…”
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Low-Temperature Optical and Resonance Raman Spectra of a Carotenoid Cation Radical in Photosystem II by Vrettos, John S, Stewart, David H, de Paula, Julio C, Brudvig, Gary W

“…Low-temperature (77 K) illumination of manganese-depleted Synechocystis PCC 6803 photosystem II core complexes caused the reversible photooxidation of a…”
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Mechanism of photosynthetic water oxidation: combining biophysical studies of photosystem II with inorganic model chemistry by Vrettos, John S, Limburg, Julian, Brudvig, Gary W

“…A mechanism for photosynthetic water oxidation is proposed based on a structural model of the oxygen-evolving complex (OEC) and its placement into the modeled…”
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Infrared techniques for quantifying protein structural stability by Vrettos, John S., Meuse, Curtis W.

“…Biopharmaceutical and biotechnology companies and regulatory agencies require novel methods to determine the structural stabilities of proteins and the…”
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Quantifying the Ion Selectivity of the Ca2+ Site in Photosystem II:  Evidence for Direct Involvement of Ca2+ in O2 Formation by Vrettos, John S, Stone, Daniel A, Brudvig, Gary W

“…Calcium is an essential cofactor in the oxygen-evolving complex (OEC) of photosystem II (PSII). The removal of Ca2+ or its substitution by any metal ion except…”
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Quantifying the Ion Selectivity of the Ca2+ Site in Photosystem II:  Evidence for Direct Involvement of Ca2+ in O2 Formation by Vrettos, John S, Stone, Daniel A, Brudvig, Gary W

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Raman spectra and normal coordinate analyses of low-frequency vibrations of oxo-bridged manganese complexes by Cua, Agnes, Vrettos, John S, de Paula, Julio C, Brudvig, Gary W, Bocian, David F

“…The active sites of certain metalloenzymes involved in oxygen metabolism, such as manganese catalase and the oxygen-evolving complex of photosystem II, contain…”
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Catalytic Oxygen Evolution by a Bioinorganic Model of the Photosystem II Oxygen-Evolving Complex by Howard, Derrick L, Tinoco, Arthur D, Brudvig, Gary W, Vrettos, John S, Allen, Bertha Connie

“…Bioinorganic chemistry is a discipline that few undergraduates experience within a laboratory setting. This article details a series of experiments suitable…”
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A Functional Model for O-O Bond Formation by the O$_2$-Evolving Complex in Photosystem II by Limburg, Julian, Vrettos, John S., Liable-Sands, Louise M., Rheingold, Arnold L., Crabtree, Robert H., Brudvig, Gary W.

“…The formation of molecular oxygen from water in photosynthesis is catalyzed by photosystem II at an active site containing four manganese ions that are…”
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Minocycline and tigecycline form higher-order Ca2+ complexes of stronger affinity than tetracycline by Arias, Karla, Robinson, Sophia G., Lyngaas, Stephanie S., Cherala, Sanjay S., Hartzell, Matt, Mei, Stacey, Vilic, Azra, Girel, JoAnn K., Kuemmell, Andreas, Vrettos, John S., Zielinski, Joseph, Liechti, Kurt, Jin, Lihua

“…This work examined the effect of ring substituents on Ca2+ affinity and binding stoichiometry for tetracycline, minocycline and tigecycline using isothermal…”
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Carotenoid Photooxidation in Photosystem II by Tracewell, Cara A., Vrettos, John S., Bautista, James A., Frank, Harry A., Brudvig, Gary W.

“…Carotenoids are known to function as light-harvesting pigments and they play important roles in photoprotection in both plant and bacterial photosynthesis…”
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Speciation of the Catalytic Oxygen Evolution System:  [Mn III/IV 2 (μ-O) 2 (terpy) 2 (H 2 O) 2 ](NO 3 ) 3 + HSO 5 by Chen, Tagore, Ranitendranath, Olack, Gerard, Vrettos, John S., Weng, Tsu-Chien, Penner-Hahn, James, Crabtree, Robert H., Brudvig, Gary W.

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Quantifying the Ion Selectivity of the Ca 2+ Site in Photosystem II:  Evidence for Direct Involvement of Ca 2+ in O 2 Formation by Vrettos, John S., Stone, Daniel A., Brudvig, Gary W.

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Quantifying the Ion Selectivity of the Ca 2+ Site in Photosystem II:  Evidence for Direct Involvement of Ca 2+ in O 2 Formation by Vrettos, John S., Stone, Daniel A., Brudvig, Gary W.

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Catalyitc oxygen evolution by a bioinorganic model of the photosystem II oxygen-evolving complex by Howard, Derrick L, Tinoco, Arthur D, Brudvig, Gary W, Vrettos, John S, Bertha Connie Allen

“…A rapidly expanding field is bioinorganic chemistry. Howard et al detail experiments suitable for advanced undergraduates that will introduce them to the…”
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