J Phys Chem 79:1647–1651CrossRef Ulas G, Olack G, Brudvig GW (200

J Phys Chem 79:1647–1651CrossRef Ulas G, Olack G, Brudvig GW (2008) Evidence against bicarbonate bound in the O2 evolving complex of photosystem II. Biochemistry 47:3073–3075CrossRefPubMed Vignais PM (2005) H/D exchange reactions and mechanistic aspects of the hydrogenase. Coord Chem Rev 249:1677–1690CrossRef

Von Dabrafenib ic50 Caemmerer S, Quinn V, Hancock NC, Price GD, Furbank RT, Ludwig M (2004) Carbonic anhydrase and C4 photosynthesis: a transgenic analysis. Plant Cell Environ 27:697–703CrossRef Woodger FJ, Badger MR, Price GD (2005) Sensing of inorganic carbon limitation in Synechococcus PCC7942 is correlated with the size of the internal inorganic carbon pool and involves oxygen. Plant Physiol 139:1959–1969CrossRefPubMed Footnotes 1 Databases with fragmentation patterns of numerous molecules,

including biopolymers are available BMS345541 at e.g. http://​webbook.​nist.​gov/​chemistry/​mw-ser.​html; MS companies additionally provide library software.   2 The permeability is a product of the diffusion constant (D) and solubility coefficient of the gas in the membrane.   3 YSI provides a 12.5 µm high sensitivity and a 25.5 µm standard sensitivity Teflon membrane, Hansatech a 25 µm Teflon membrane.   4 Molecular oxygen is somewhat simplified as there is also a 0.0374% enrichment of 17O at natural abundance. This can be taken into consideration SP600125 cost by expansion of the Eq. 4. However, molecular

oxygen species from 17O at m/z = 33, 34 and 35 at natural abundance are very small (0.07462, 0.00001, and 0.00015% respectively) and for MIMS approaches can practically be ignored.   5 HC18O3 − is prepared by incubating NaHCO3 in >95% 18O-water. Isotopic equilibration is ~24 h at room temperature and converts the hydrogencarbonate to triply 18O labeled species.”
“Introduction Electron-nuclear double resonance (ENDOR) has been introduced by Feher (1956) in solid state physics and later extended to radicals in solution by Hyde and Maki (1964). The Ribonucleotide reductase technique has been extensively used in photosynthesis research (reviewed in Möbius et al. 1989, Lubitz and Lendzian 1996, Rigby et al. 2001, Britt et al. 2004). ENDOR combines electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) spectroscopy, but their roles are different. The EPR signal is measured at a fixed magnetic field, and its intensity is varied by the applied scanned radio frequency (rf) irradiation (NMR). ENDOR is sensitive only to paramagnetic species. Fortunately, such species frequently occur in photosynthesis. Many photosynthetic reactions involve radicals, radical pairs (RPs), and triplet states and active centers of the proteins and enzymes often contain transition metal ions. Thus, ENDOR is able to probe the most interesting parts of the photosynthetic machinery.

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