The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it>
<p>Abstract</p> <p>Background</p> <p>The <it>Staphylococcus aureus</it> RecU protein is homologous to a <it>Bacillus subtilis</it> Holliday junction resolvase. Interestingly, RecU is encoded in the same operon as PBP2, a penicillin-binding protei...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
BMC
2013-01-01
|
Series: | BMC Microbiology |
Subjects: | |
Online Access: | http://www.biomedcentral.com/1471-2180/13/18 |
id |
doaj-b18ab71aed4a4aa2b5159067e99e1179 |
---|---|
record_format |
Article |
spelling |
doaj-b18ab71aed4a4aa2b5159067e99e11792020-11-24T23:52:12ZengBMCBMC Microbiology1471-21802013-01-011311810.1186/1471-2180-13-18The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it>Pereira Ana RReed PatriciaVeiga HelenaPinho Mariana G<p>Abstract</p> <p>Background</p> <p>The <it>Staphylococcus aureus</it> RecU protein is homologous to a <it>Bacillus subtilis</it> Holliday junction resolvase. Interestingly, RecU is encoded in the same operon as PBP2, a penicillin-binding protein required for cell wall synthesis and essential for the full expression of resistance in Methicillin Resistant <it>S. aureus</it> strains. In this work we have studied the role of RecU in the clinical pathogen <it>S. aureus.</it></p> <p>Results</p> <p>Depletion of RecU in <it>S. aureus</it> results in the appearance of cells with compact nucleoids, septa formed over the DNA and anucleate cells. RecU-depleted cells also show increased septal recruitment of the DNA translocase SpoIIIE, presumably to resolve chromosome segregation defects. Additionally cells are more sensitive to DNA damaging agents such as mitomycin C or UV radiation. Expression of RecU from the ectopic chromosomal <it>spa</it> locus showed that co-expression of RecU and PBP2 was not necessary to ensure correct cell division, a process that requires tight coordination between chromosome segregation and septal cell wall synthesis.</p> <p>Conclusions</p> <p>RecU is required for correct chromosome segregation and DNA damage repair in <it>S. aureus</it>. Co-expression of <it>recU</it> and <it>pbp2</it> from the same operon is not required for normal cell division.</p> http://www.biomedcentral.com/1471-2180/13/18<it>Staphylococcus aureus</it><it>recU</it>Chromosome segregationDNA repair |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pereira Ana R Reed Patricia Veiga Helena Pinho Mariana G |
spellingShingle |
Pereira Ana R Reed Patricia Veiga Helena Pinho Mariana G The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it> BMC Microbiology <it>Staphylococcus aureus</it> <it>recU</it> Chromosome segregation DNA repair |
author_facet |
Pereira Ana R Reed Patricia Veiga Helena Pinho Mariana G |
author_sort |
Pereira Ana R |
title |
The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it> |
title_short |
The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it> |
title_full |
The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it> |
title_fullStr |
The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it> |
title_full_unstemmed |
The Holliday junction resolvase RecU is required for chromosome segregation and DNA damage repair in <it>Staphylococcus aureus</it> |
title_sort |
holliday junction resolvase recu is required for chromosome segregation and dna damage repair in <it>staphylococcus aureus</it> |
publisher |
BMC |
series |
BMC Microbiology |
issn |
1471-2180 |
publishDate |
2013-01-01 |
description |
<p>Abstract</p> <p>Background</p> <p>The <it>Staphylococcus aureus</it> RecU protein is homologous to a <it>Bacillus subtilis</it> Holliday junction resolvase. Interestingly, RecU is encoded in the same operon as PBP2, a penicillin-binding protein required for cell wall synthesis and essential for the full expression of resistance in Methicillin Resistant <it>S. aureus</it> strains. In this work we have studied the role of RecU in the clinical pathogen <it>S. aureus.</it></p> <p>Results</p> <p>Depletion of RecU in <it>S. aureus</it> results in the appearance of cells with compact nucleoids, septa formed over the DNA and anucleate cells. RecU-depleted cells also show increased septal recruitment of the DNA translocase SpoIIIE, presumably to resolve chromosome segregation defects. Additionally cells are more sensitive to DNA damaging agents such as mitomycin C or UV radiation. Expression of RecU from the ectopic chromosomal <it>spa</it> locus showed that co-expression of RecU and PBP2 was not necessary to ensure correct cell division, a process that requires tight coordination between chromosome segregation and septal cell wall synthesis.</p> <p>Conclusions</p> <p>RecU is required for correct chromosome segregation and DNA damage repair in <it>S. aureus</it>. Co-expression of <it>recU</it> and <it>pbp2</it> from the same operon is not required for normal cell division.</p> |
topic |
<it>Staphylococcus aureus</it> <it>recU</it> Chromosome segregation DNA repair |
url |
http://www.biomedcentral.com/1471-2180/13/18 |
work_keys_str_mv |
AT pereiraanar thehollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit AT reedpatricia thehollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit AT veigahelena thehollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit AT pinhomarianag thehollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit AT pereiraanar hollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit AT reedpatricia hollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit AT veigahelena hollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit AT pinhomarianag hollidayjunctionresolvaserecuisrequiredforchromosomesegregationanddnadamagerepairinitstaphylococcusaureusit |
_version_ |
1725474264561221632 |