10 October 2016: SSRL/LCLS Users Meeting Simon attended the 2016 SSRL/LCLS Users Meeting at SLAC National Accelerator Laboratory, Menlo Park, CA between 05-08 October 2016. He also attended the workshops on “Electrochemical Energy Materials and Fundamental Studies using Synchrotron X-rays” and “In-Situ Catalysis with Advanced X-Ray Methods”. Simon is a long-standing User at SSRL (Stanford Synchrotron Radiation Lightsource), one of the premier synchrotron light facilities worldwide.  09 September 2016: Paper in Chemical Communications. EXAFS Reveals Two Mo Environments in the Nitrogenase Iron-Molybdenum Cofactor Biosynthetic Protein NifQ George S.J.; Hernandez J.A.; Jimenez-Vicente E.; Echavarri-Erasun C.; Rubio L.M. Chem. Comm. 2016 52, 11811-11814 We use Mo and Fe EXAFS spectroscopy to show that the biosynthesis protein NifQ contains multiple kinds of molybdenum site. This implies that NifQ may be a biosynthetic enzyme which converts molybdate into different chemical form which is then inserted into the Mo-Fe-S cofactor of nitrogenase, a key environmental enzyme. This work is part of a collaboration with Luis Rubio of Centro de Biotechnología y Genómica de Plantas, UPM-INIA, Madrid, Spain and Jose Hernandez of Midwestern University, Glendale Arizona. 15 January 2016: Paper in Dalton Transactions. Interaction of Gd-DTPA with phosphate and phosphite: Toward the reaction intermediate in Nephrogenic Systemic Fibrosis Gao, S.; George S.J.; Zhou Z-H. Dalton Trans. 2016, 45, 5388–5394 We show that phosphate can bind to gadolinium in the chelator DTPA, weakening the binding of the metal to it's chelator, a process that may well be the first step in the formation of gadolinium phosphate tissue deposits in the disease Nephrogenic Systemic Fibrosis. This work is part of a collaboration with Zhao-Hui Zhou of the College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China. |
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Simon Scientific  Contact: Dr. Simon J. George Simon Scientific PO Box 71204 Richmond, CA 9480 |
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