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Use of small‐angle X‐ray scattering to resolve intracellular structure changes of Escherichia coli cells induced by antibiotic treatment
Author(s) -
von Gundlach A. R.,
Garamus V. M.,
Willey T. M.,
Ilavsky J.,
Hilpert K.,
Rosenhahn A.
Publication year - 2016
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576716018562
Subject(s) - small angle x ray scattering , ribosome , escherichia coli , intracellular , scattering , chloramphenicol , biophysics , tetracycline , small angle scattering , chemistry , crystallography , materials science , antibiotics , biology , rna , biochemistry , optics , physics , gene
The application of small‐angle X‐ray scattering (SAXS) to whole Escherichia coli cells is challenging owing to the variety of internal constituents. To resolve their contributions, the outer shape was captured by ultra‐small‐angle X‐ray scattering and combined with the internal structure resolved by SAXS. Building on these data, a model for the major structural components of E. coli was developed. It was possible to deduce information on the occupied volume, occurrence and average size of the most important intracellular constituents: ribosomes, DNA and proteins. E. coli was studied after treatment with three different antibiotic agents (chloramphenicol, tetracycline and rifampicin) and the impact on the intracellular constituents was monitored.