X-ray absorption spectroscopic studies on model compounds for biological iodine and bromine
نویسندگان
چکیده
منابع مشابه
X-ray absorption spectroscopic studies on model compounds for biological iodine and bromine.
X-ray absorption spectra of a number of organic iodine and bromine compounds of biological relevance, as well as of a series of iodine compounds with different oxidation states, have been measured. The iodine K-edge spectra (XANES) are found to be relatively featureless but the position of the edge is found to be sensitive to formal valence (among other factors), and the edge shape to the numbe...
متن کاملX-ray absorption spectroscopic studies of zinc in the N-terminal domain of HIV-2 integrase and model compounds.
X-ray absorption spectroscopy (XAS), including extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) analysis, has been carried out at the Zn K edge of the N-terminal part of the integrase protein of the human immunodeficiency virus, type 2 (HIV-2), and of some zinc coordination compounds. In the presence of excess beta-mercaptoethanol, which was pres...
متن کاملX-ray absorption and diffraction studies
We have produced assemblies of FePt nanoparticles using high temperature solution phase synthesis and polymer-mediated layer-by-layer deposition allowing precise control of the particle self-assembly. The as-deposited particles have a narrow size distribution offering the potential for use as ultra-high density magnetic storage media and ultimately storage of one bit per individual nanoparticle...
متن کاملX-ray absorption spectroscopic studies of metal centres in biology and developments of relevant synthetic analogues
X-ray absorption spectroscopy (XAS) has been used extensively to probe the local environment of transition metal centres in biological systems. The synergy between such XAS studies and co-ordination chemistry is well developed. Examples where XAS studies of metal centres in biological systems have stimulated developments in coordination chemistry include Amavadin and representatives of the oxym...
متن کاملDistribution and speciation of bromine in mammalian tissue and fluids by X-ray fluorescence imaging and X-ray absorption spectroscopy.
Bromine is one of the most abundant and ubiquitous trace elements in the biosphere and until recently had not been shown to perform any essential biological function in animals. A recent study demonstrated that bromine is required as a cofactor for peroxidasin-catalysed formation of sulfilimine crosslinks in Drosophila. In addition, bromine dietary deficiency is lethal in Drosophila, whereas br...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Synchrotron Radiation
سال: 2004
ISSN: 0909-0495
DOI: 10.1107/s0909049504027815