The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Active transport of thallous ions by Streptococcus lactis.

Tl+ ions have been shown to mimic or compete with K+ in a number of membrane systems. We confirmed that in starved, valinomycin-treated cells of Streptococcus lactis 7962, Tl+ ions distributed themselves across the bacterial membrane in response to the potassium diffusion potential. In glucose-energized cells, however, Tl+ was taken up by a system specifically stimulated by sodium salts. The intracellular levels of Tl+ exceeded those attained by [3H]triphenylmethylphosphonium ion, a lipophilic cation which accumulates in response to the membrane potential. The uptake of Tl+ by (Na+ and glucose)-stimulated cells was strongly inhibited by potassium salts. These experiments suggest that metabolic energy is coupled to Tl+ transport by means of a high energy phosphate compound and that Tl+ ions are actively transported by a membrane carrier whose normal substrate is K+. The uptake of Tl+ is not a valid method for determining the streptococcal membrane potential.[1]

References

 
WikiGenes - Universities