My watch list
my.chemeurope.com  
Login  

430 Newest Publications in proceedings of the national academy of sciences current issue

rss
matching the following criteria

Wolbachia small noncoding RNAs and their role in cross-kingdom communications [Microbiology]

30-Dec-2014 | Jaime G. Mayoral; Mazhar Hussain; D. Albert Joubert; Iñaki Iturbe-Ormaetxe; Scott L. O’Neill; Sassan Asgari, Proceedings of the National Academy of Sciences current issue, 2014

In prokaryotes, small noncoding RNAs (snRNAs) of 50–500 nt are produced that are important in bacterial virulence and response to environmental stimuli. Here, we identified and characterized snRNAs from the endosymbiotic bacteria, Wolbachia, which are widespread in invertebrates and cause ...

more

pH modulates the activity and synergism of the airway surface liquid antimicrobials {beta}-defensin-3 and LL-37 [Microbiology]

30-Dec-2014 | Mahmoud H. Abou Alaiwa; Leah R. Reznikov; Nicholas D. Gansemer; Kelsey A. Sheets; Alexander R. Horswill; David A. St ..., Proceedings of the National Academy of Sciences current issue, 2014

The pulmonary airways are continuously exposed to bacteria. As a first line of defense against infection, the airway surface liquid (ASL) contains a complex mixture of antimicrobial factors that kill inhaled and aspirated bacteria. The composition of ASL is critical for antimicrobial ...

more

Structural basis and dynamics of multidrug recognition in a minimal bacterial multidrug resistance system [Biochemistry]

23-Dec-2014 | Judith Habazettl; Martin Allan; Pernille Rose Jensen; Hans-Jürgen Sass; Charles J. Thompson; Stephan Grzesiek, Proceedings of the National Academy of Sciences current issue, 2014

TipA is a transcriptional regulator found in diverse bacteria. It constitutes a minimal autoregulated multidrug resistance system against numerous thiopeptide antibiotics. Here we report the structures of its drug-binding domain TipAS in complexes with promothiocin A and nosiheptide, and a model ...

more

Structure of the nonameric bacterial amyloid secretion channel [Microbiology]

16-Dec-2014 | Baohua Cao; Yan Zhao; Yongjun Kou; Dongchun Ni; Xuejun Cai Zhang; Yihua Huang, Proceedings of the National Academy of Sciences current issue, 2014

Various strains of bacteria are able to produce a unique class of functional amyloids termed curli, which are critical for biofilm formation, host cell adhesion, and colonization of inert surfaces. Curli are secreted via the type VIII bacterial secretion system, and they share biochemical and ...

more

Flagellated bacterial motility in polymer solutions [Physics]

16-Dec-2014 | Vincent A. Martinez; Jana Schwarz-Linek; Mathias Reufer; Laurence G. Wilson; Alexander N. Morozov; Wilson C. K. Poon, Proceedings of the National Academy of Sciences current issue, 2014

It is widely believed that the swimming speed, v, of many flagellated bacteria is a nonmonotonic function of the concentration, c, of high-molecular-weight linear polymers in aqueous solution, showing peaked v(c) curves. Pores in the polymer solution were suggested as the explanation. Quantifying ...

more

News Feature: Animals that self-medicate [News Feature]

09-Dec-2014 | Joel Shurkin, Proceedings of the National Academy of Sciences current issue, 2014

Many animal species have created their own pharmacies from ingredients that commonly occur in nature. Birds, bees, lizards, elephants, and chimpanzees all share a survival trait: They self-medicate. These animals eat things that make them feel better, or prevent disease, or kill parasites like ...

more

Global discovery of colonization determinants in the squid symbiont Vibrio fischeri [Microbiology]

02-Dec-2014 | John F. Brooks II; Mattias C. Gyllborg; David C. Cronin; Sarah J. Quillin; Celeste A. Mallama; Randi Foxall; Cheryl ..., Proceedings of the National Academy of Sciences current issue, 2014

Animal epithelial tissue becomes reproducibly colonized by specific environmental bacteria. The bacteria (microbiota) perform critical functions for the host’s tissue development, immune system development, and nutrition; yet the processes by which bacterial diversity in the environment is ...

more

XerD-mediated FtsK-independent integration of TLC{phi} into the Vibrio cholerae genome [Microbiology]

25-Nov-2014 | Caroline Midonet; Bhabatosh Das; Evelyne Paly; Francois-Xavier Barre, Proceedings of the National Academy of Sciences current issue, 2014

As in most bacteria, topological problems arising from the circularity of the two Vibrio cholerae chromosomes, chrI and chrII, are resolved by the addition of a crossover at a specific site of each chromosome, dif, by two tyrosine recombinases, XerC and XerD. The reaction is under the control of ...

more

Gill bacteria enable a novel digestive strategy in a wood-feeding mollusk [Microbiology]

25-Nov-2014 | Roberta M. O’Connor; Jennifer M. Fung; Koty H. Sharp; Jack S. Benner; Colleen McClung; Shelley Cushing; Elizabeth R. ..., Proceedings of the National Academy of Sciences current issue, 2014

Bacteria play many important roles in animal digestive systems, including the provision of enzymes critical to digestion. Typically, complex communities of bacteria reside in the gut lumen in direct contact with the ingested materials they help to digest. Here, we demonstrate a previously ...

more

Acceleration of evolutionary spread by long-range dispersal [Applied Physical Sciences]

18-Nov-2014 | Oskar Hallatschek; Daniel S. Fisher, Proceedings of the National Academy of Sciences current issue, 2014

The spreading of evolutionary novelties across populations is the central element of adaptation. Unless populations are well mixed (like bacteria in a shaken test tube), the spreading dynamics depend not only on fitness differences but also on the dispersal behavior of the species. Spreading at a ...

more

Page 1 From 43
Subscribe to e-mail updates relating to your search

You will receive via e-mail the latest search results matching your search criteria. This service is free of charge and can be cancelled at any time.

Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE