Unknown

Dataset Information

0

Cell morphology and nucleoid dynamics in dividing Deinococcus radiodurans.


ABSTRACT: Our knowledge of bacterial nucleoids originates mostly from studies of rod- or crescent-shaped bacteria. Here we reveal that Deinococcus radiodurans, a relatively large spherical bacterium with a multipartite genome, constitutes a valuable system for the study of the nucleoid in cocci. Using advanced microscopy, we show that D. radiodurans undergoes coordinated morphological changes at both the cellular and nucleoid level as it progresses through its cell cycle. The nucleoid is highly condensed, but also surprisingly dynamic, adopting multiple configurations and presenting an unusual arrangement in which oriC loci are radially distributed around clustered ter sites maintained at the cell centre. Single-particle tracking and fluorescence recovery after photobleaching studies of the histone-like HU protein suggest that its loose binding to DNA may contribute to this remarkable plasticity. These findings demonstrate that nucleoid organization is complex and tightly coupled to cell cycle progression in this organism.

SUBMITTER: Floc'h K 

PROVIDER: S-EPMC6707255 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

altmetric image

Publications

Cell morphology and nucleoid dynamics in dividing Deinococcus radiodurans.

Floc'h Kevin K   Lacroix Françoise F   Servant Pascale P   Wong Yung-Sing YS   Kleman Jean-Philippe JP   Bourgeois Dominique D   Timmins Joanna J  

Nature communications 20190823 1


Our knowledge of bacterial nucleoids originates mostly from studies of rod- or crescent-shaped bacteria. Here we reveal that Deinococcus radiodurans, a relatively large spherical bacterium with a multipartite genome, constitutes a valuable system for the study of the nucleoid in cocci. Using advanced microscopy, we show that D. radiodurans undergoes coordinated morphological changes at both the cellular and nucleoid level as it progresses through its cell cycle. The nucleoid is highly condensed,  ...[more]

Similar Datasets

| S-EPMC10100863 | biostudies-literature
| S-EPMC153069 | biostudies-literature
| S-EPMC2805324 | biostudies-literature
| S-EPMC9659351 | biostudies-literature
| S-EPMC3063356 | biostudies-literature
| S-EPMC5583488 | biostudies-literature
| PRJNA1058540 | ENA
| PRJNA121525 | ENA
| PRJNA382319 | ENA
| PRJNA148399 | ENA