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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Proc+Natl+Acad+Sci+U+S+A 2016 ; 113 (51): E8219-27 Nephropedia Template TP
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Measuring spectroscopy and magnetism of extracted and intracellular magnetosomes using soft X-ray ptychography #MMPMID27930297
Zhu X; Hitchcock AP; Bazylinski DA; Denes P; Joseph J; Lins U; Marchesini S; Shiu HW; Tyliszczak T; Shapiro DA
Proc Natl Acad Sci U S A 2016[Dec]; 113 (51): E8219-27 PMID27930297show ga
Magnetotactic bacteria are one of the simplest systems that perform biomineralization: organisms that create inorganic materials using biochemistry under genetic control. They synthesize magnetosomes, which are intracellular, membrane-bound nanoscale single crystals of magnetite, a magnetic iron oxide. We studied the magnetism of individual magnetosomes inside individual cells with spectro-ptychography, a new technique of high-resolution X-ray microscopy. Our results help us to understand how the cells biomineralize magnetosomes and their function in the cell ecophysiology. In addition to demonstrating a large improvement in spatial resolution relative to earlier nonptychography studies, the results presented provide insights into magnetosome biomineralization.