Navigation Links
New leads on mechanisms that confer virulence to E.coli-type bacteria
Date:12/9/2011

The researchers have solved the three-dimensional structure of a key region of the DNA-protein complex. Knowledge about the structures that control the activity of genes associated with virulence and resistance to antibiotics is crucial to understand the molecular mechanisms that regulate bacterial pathogenicity and to pave the way for alternative treatments to conventional antibiotics. According to Jess Garca, research associate in the IRB Barcelona group headed by Miquel Pons, researcher at IRB Barcelona and professor of the UB, "a strategy based on selective regulatory systems for genes responsible for virulence is particularly attractive because it could potentially minimize the adverse effects on our bacterial flora and reduce the selective pressure for the development of antibiotic resistance in bacteria".

Many of the genes responsible for pathogenic bacteria virulence and resistance to antibiotics have been acquired through processes such as horizontal gene transfer (HGT). By means of this mechanism, bacteria incorporate genetic material from external sources such as bacteria or phages (viruses that affect bacteria). The correct regulation of HGT genes, in other words silencing when not required and coordinated activation to produce a beneficial effect, is crucial for the success of bacteria.

"The resolved structure has allowed us to understand the way in which Ler recognizes its DNA binding sites. Ler does not recognize specific sequences but local DNA structures. In our study we also tested whether this recognition mode is used by other proteins of the same family, such as H-NS", explains Garca. The Ler and H-NS proteins play a critical role in the regulation of genes acquired through HGT in pathogenic E. coli strains.


'/>"/>
Contact: Snia Armengou
sonia.armengou@irbbarcelona.org
34-934-037-255
Institute for Research in Biomedicine (IRB Barcelona)
Source:Eurekalert  

Page: 1

Related biology news :

1. FSU researchers discovery leads to $1.5 million grant, potential new treatment of liver fibrosis
2. How neuronal activity leads to Alzheimers protein cleavage
3. Exposing chicks to maternal stress leads to long-term reproductive success
4. TECNALIA leads five projects within the VII Framework Program
5. Personalized medicine: Innovative online journal leads the way
6. Mayo Clinic research on tamoxifen leads to recommendation for CYP2D6 gene test
7. Study of placenta unexpectedly leads to cancer gene
8. Game of two halves leads to brain asymmetry
9. Transportation fuels of the future: Nottingham leads the way
10. Concordia University leads academic team for national Cellulosic Biofuels Network
11. Elephant shark genome sequence leads to discovery of color perception in deep-sea fish
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New leads on mechanisms that confer virulence to E.coli-type bacteria
(Date:2/11/2016)... Solutions announces today that its license plate recognition (LPR) cameras ... Lee,s Summit Police Department to improve safety for ... homicide suspect. Kansas City , ... and is home to roughly 100,000 residents. Lee,s ... plate reader system and also leverages Vigilant,s network of commercially ...
(Date:2/9/2016)... 9, 2016 Aware, Inc. (NASDAQ: AWRE ), a ... for its fourth quarter and year ended December 31, 2015.  ... fourth quarter of 2015 was $6.9 million, an increase of 61% ... income in the fourth quarter of 2015 was $2.6 million compared ... --> --> Higher revenue and operating ...
(Date:2/8/2016)... Republic , February 8, 2016 ... global payment platform which presents innovation for clients, ... Authentication feature called VoiceKey. --> Worldcore ... which presents innovation for clients, comfort and unbeatable ... VoiceKey. --> Worldcore is ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... Florida , February 11, 2016 ... and Promote Genetic Understanding to Support Research and Discovery ... GenomeAsia 100K, today announced an ambitious plan to sequence 100,000 ... South Asian countries and at least 7 of North and ... In the first phase, the project will focus on ...
(Date:2/11/2016)... and GERMANTOWN, Maryland , February 11, ... Standard: QIA) today announced the introduction of more than ... profiling, expanding QIAGEN,s portfolio of Sample to Insight solutions ... select from over 20,000 human genes and lncRNA to ... cellular phenotypes and disease processes. --> QGEN ...
(Date:2/11/2016)... Feb. 11, 2016  Wellcentive today announced it ... Portland, Oregon -based community care organization (CCO) ... health analytics, quality reporting and care management solutions ... its team of quality managers, analysts and care ... provider groups serving FamilyCare members. ...
(Date:2/11/2016)... DELRAY BEACH, Florida , February 11, 2016 ... --> PositiveID Corporation ("PositiveID" or "Company") (OTCQB: ... and diagnostics, announced today that its Thermomedics subsidiary, ... significant progress on its growth plan in January ... healthcare products distributors, increasing sequential monthly sales growth, ...
Breaking Biology Technology: