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Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Curr+Opin+Microbiol 2014 ; ä (ä): 15-21 Nephropedia Template TP
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New approaches to understanding the spatial organization of bacterial genomes #MMPMID25305533
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Curr Opin Microbiol 2014[Dec]; ä (ä): 15-21 PMID25305533show ga
In all organisms, chromosomal DNA must be compacted nearly three orders of magnitude to fit within the limited volume of a cell. However, chromosomes cannot be haphazardly packed, and instead must adopt structures compatible with numerous cellular processes, including DNA replication, chromosome segregation, recombination, and gene expression. Recent technical advances have dramatically enhanced our understanding of how chromosomes are organized in vivo and have begun to reveal the mechanisms and forces responsible. Here, we review the current arsenal of techniques used to query chromosome structure, focusing on (i) single-cell fluorescence microscopy approaches that directly examine chromosome structure and (ii) population-averaged biochemical methods that infer chromosome structure based on the interaction frequencies of different chromosomal loci. We describe the power of these techniques, highlighting the major advances they have produced while also discussing their limitations.