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Recent News and Articles on the Keywords: sabotage + use + undescribed  Related to the article below (Last Update: 8/5/2008)

Trinamool trying to sabotage Tata car project, says Bose
Hindu, India -
She had warned the government not to use force against those who would be joining the camps. The agitation would continue till 400 acres ?forcibly acquired? ...NSE:E:TATAMOTORS.IL - TTM - NSE:E:TATAMOTORS.EQ
MILF might use TRO to justify attacks - senators
GMA news.tv, Philippines - Aug 4, 2008
Pimentel said that with the issuance of the temporary restraining order, some sectors might try to sabotage the on-going peace process and sow terrorism in ...
Attention Deficit Disorder
Basil & Spice, FL -
Unless you gain "buy in" and then full cooperation of a person's personality, they will frequently sabotage the treatment, by not following through or ...

CBC.ca
China and the Olympics
Economist, UK - Aug 4, 2008
They also said that they had arrested 82 suspected terrorists in Xinjiang who had been plotting to sabotage the Olympic games. ...
China calls Xinjiang incident a "terrorist attack" foreign ... Monsters and Critics.com
Recent News Analysis: Defense Update
China military in massive Olympics security role Macon Telegraph
Central Florida News 13|
all 2,070 news articles »
Motorists hit hard again with fuel taxes for public transport
New Zealand Herald, New Zealand - 36 minutes ago
... other Aucklanders in line with legal requirements, drawing an accusation from council chairman Mike Lee that it is trying to sabotage electrification. ...
The Mole: Tick, Tock Boom!
Reality TV Magazine, AZ -
Mark also makes sure that each player takes turns doing each task, so that no one person can sabotage the game. They finally get the times and realize that ...
Use interests
Chester DailyLocal.com,  USA - Aug 3, 2008
And, often despite a womanly tendency for self-sabotage, I've managed to make a decent living for two decades as a corporate trainer and keynote speaker. ...
Paying lip service to cap-and-trade
Guardian Unlimited, UK - Aug 4, 2008
For the next seven and half years, the White House ignored mounting evidence of the problem, while making a concerted effort to sabotage international ...
Ministers should never be allowed to control Public Officers
Sunday Standard, Botswana -
In the contrary they either timidly await the chop or device retaliatory schemes which could include falsification of information and overt sabotage. ...
Making Pre-show Promotion Stand Out
Meeting News, NY -
Many exhibitors do a great job at the show, but lackluster or non-existent efforts prior to and after the event sabotage their efforts. ...
Source: Google News

How pathogenic bacteria evade mammalian sabotage in the battle for iron -
MA Fischbach, H Lin, DR Liu, CT Walsh - Nature Chemical Biology, 2006 - nature.com
... How pathogenic bacteria evade mammalian sabotage in the ... 39)?which is used clinically
as the ... gene cluster by identifying previously undescribed metabolites in ...
-

Viral targeting of the interferon-{beta}-inducing Traf family member-associated NF-{kappa} B … -
G Unterstab, S Ludwig, A Anton, O Planz, B Dauber, … - Proceedings of the National Academy of Sciences, 2005 - National Acad Sciences
... provide evidence for a previously undescribed mechanism by ... 1 and various amounts
of P were used to condition ... consequences of this viral sabotage, because the ...

[PDF] Entrepreneurship, Innovation and Growth: The David-Goliath Symbiosis -
WJ Baumol - Journal of Entrepreneurial Finance and Business Ventures, 2002 - econ.nyu.edu
... oligopolistic firms use innovation as the main battle ... suddenly decimated by some
undescribed plague ... what Thorstein Veblen described as "systematic sabotage" of ...

Slavery, Ideology, and" Cliometrics
C Crowe - Technology and Culture, 1976 - JSTOR
... or the existence of the sullen sabotage of "day-to ... experience consisting of both
generally undescribed "chains of ... of convenience this essay will use the fantasy ...

Intra-and interspecific competition among helminth parasites: Effects on Coitocaecum parvum life …
C Lagrue, R Poulin - International Journal for Parasitology, 2008 - Elsevier
... fluviatilis is an excellent study model as it is used as intermediate ... First, an
undescribed species of Microphallus (trematode) uses both P. fluviatilis and ...

[CITATION] Nick Currey, Peter Martin, Placer Dome Asia Pacific GPO Box 465, Brisbane, Queensland, 4001 Josh …
P Hardwick, E Stakeholder
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Human Health, Well-Being, and Global Ecological Scenarios -
CD Butler, CF Corvalan, HS Koren - Ecosystems, 2005 - Springer
... driven by the excessive use of antibiotics ... Modulated effects could sabotage even
optimistic scenarios. ... four categories, a previously undescribed taxonomy which ...

Religious Naturalism and Naturalizing Morality -
U Goodenough - Zygon, 2003 - Blackwell Synergy
... being said, we in fact need not use such a ... also, curiously, in vampire bats, but
undescribed in other ... of community, but they can also sabotage community and ...

Locality in the History of Science: Colonial Science, Technoscience, and Indigenous Knowledge
DW Chambers, R Gillespie - Osiris, 2000 - JSTOR
... Spain was not slow to sabotage local attempts ... tributes (in this case scientifically
undescribed rhododendrons ... David Turbull usefully suggests the use of Deleuze ...

Recruitment rate of gymnophallid metacercariae in the New Zealand cockle Austrovenus stutchburyi: an … -
TLF Leung, R Poulin - Parasitology Research, 2007 - Springer
... parasitised by metacercariae of an undescribed species of ... hitch-hiking,? ?hijacking?
and ?sabotage? among trophi ... random patterns of host use by the ...

Source: Google Scholar

Pathogens use previously undescribed mechanism to sabotage host immune system

New research identifies a previously unknown enzymatic mechanism that subverts the early host immune response and promotes pathogenicity by manipulating a common signaling pathway in host cells. The research, published by Cell Press in the December 14th issue of Molecular Cell, may have important implications for the food industry and for development of new antibiotics. In addition, the results lead to intriguing questions about whether mammalian cells can make use of a similar mechanism for potentially permanent and irreversible posttranslational modifications.

Many gram-negative bacterial pathogens have evolved specialized mechanisms for disrupting the ability of host cells to activate innate immune responses that will provide immediate defense against infection. Mitogen-activated protein kinase (MAPK) pathways play key roles in activating host innate immune responses and are frequent targets of pathogenic effectors in both plants and animal systems. All MAPKs contain a threonine -X-tyrosine motif and require phosphorylation of both threonine and tyrosine for activation. Previous work demonstrated that members of the OspF family, including OspF from Shigella and SpvC from Salmonella, are phosphothreonine lyases that promote pathogenicity by directly targeting and irreversibly inhibiting the activation of MAPKs.

Dr. Feng Shao from the National Institute of Biological Sciences, Beijing and colleagues used mass spectrometry to examine the mechanism underlying inactivation of MAPKs by the OspF family of effectors. The researchers determined the crystal structure of SpvC and its complex with a phosphopeptide substrate. The enzyme-substrate complex revealed how SpvC docks with activated MAPK by recognizing the phosphotyrosine and then maneuvers the phosphothreonine into the enzyme active site. These data implicated the MAPK p38 as the likely preferred substrate for OspF and SpvC during bacterial infection because it has the required conformational flexibility for this interaction. The researchers went on to identify a previously unknown catalytic mechanism of acid-base mediated "-elimination of phosphoserine/phosphothreonine that irreversibly inactivated the kinase.

“Our data provide biochemical and structural evidence for specific recognition of the dual phosphorylated MAPK substrates by the OspF family of phosphothreonine lyases and explain the enzyme’s differential activities towards different MAPK substrates,” explains Dr. Shao. Further, as phosphorylation of serine and threonine residues is widely used as a regulatory mechanism in mammalian cells, the researchers speculated that phosphoserine or phosphothreonine lyases might exist in eukaryotes and serve as post-translational modification enzymes that irreversible dephosphorylate kinases or other phosphorylated substrates.

###

The researchers include Yongqun Zhu, National Institute of Biological Sciences, Beijing, China, and National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; Hongtao Li,National Institute of Biological Sciences, Beijing, China; Chengzu Long, National Institute of Biological Sciences, Beijing, China; Liyan Hu,National Institute of Biological Sciences, Beijing, China; Hao Xu,National Institute of Biological Sciences, Beijing, China; Liping Liu, National Institute of Biological Sciences, Beijing, China; She Chen, National Institute of Biological Sciences, Beijing, China; Da-Cheng Wang, National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; and Feng Shao, National Institute of Biological Sciences, Beijing, China.
 
 
 
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