What question did this study set out to answer?

Determine the functional significance, binding affinities, and individual necessity of the ten genomic parS centromere-like sites in Pseudomonas aeruginosa chromosome partitioning.

March 20, 2015PLoS ONEOpen Access

A Single parS Sequence from the Cluster of Four Sites Closest to oriC Is Necessary and Sufficient for Proper Chromosome Segregation in Pseudomonas aeruginosa

View Full Paper

Ask AI

Bookmark

Determine the functional significance, binding affinities, and individual necessity of the ten genomic parS centromere-like sites in Pseudomonas aeruginosa chromosome partitioning.
Constructed Pseudomonas aeruginosa PAO1 mutant strains harboring individual and combinatorial deletions of parS sites, including a complete parSnull mutant.
Assessed bacterial growth rates, motility, ParB subcellular localization, and frequency of anucleate cells to evaluate chromosome segregation defects.
Engineered an ectopic parS2 insertion opposite oriC in the parSnull background to evaluate the impact of genomic position on segregation rescue.
ParB bound specifically to all ten parS sites, displaying the highest binding affinity for the four sites closest to oriC (parS1 through parS4).
Any single oriC-proximal parS site was necessary and sufficient for accurate chromosome partitioning, while mutating all four produced the parSnull phenotype despite the presence of six distal sites.
Ectopic insertion of parS2 opposite oriC restored regular ParB foci organization and partially alleviated growth and motility defects, but failed to restore accurate chromosome segregation.

Discussion

No takes yet. Share an insight, caveat, or question.

Implication

Mutational analysis reveals that one oriC-proximal parS site directs chromosome segregation in Pseudomonas aeruginosa, highlighting genomic location as critical for partitioning.

Cite This Study

Jęcz et al. (2015) studied this question.

synapsesocial.com/papers/6a7d67a0a3737077bd83d42c https://doi.org/10.1371/journal.pone.0120867

View Full Paper

Ask AI

Bookmark

Implication

Mutational analysis reveals that one oriC-proximal parS site directs chromosome segregation in Pseudomonas aeruginosa, highlighting genomic location as critical for partitioning.

A Single parS Sequence from the Cluster of Four Sites Closest to oriC Is Necessary and Sufficient for Proper Chromosome Segregation in Pseudomonas aeruginosa

Key Points

Discussion

Implication

Cite This Study

A Single parS Sequence from the Cluster of Four Sites Closest to oriC Is Necessary and Sufficient for Proper Chromosome Segregation in Pseudomonas aeruginosa

Key Points

Discussion

Implication

Cite This Study

Also Consider

Also Consider