منابع مشابه
A barrier runs through it... or maybe just a river.
During my residence in the Amazon district I took every opportunity of determining the limits of species, and I soon found that the Amazon, the Rio Negro and the Madeira formed the limits beyond which certain species never passed. The native hunters are perfectly acquainted with this fact, and always cross over the river when they want to procure particular animals, which are found even on the ...
متن کاملHow do you know if you ran through a wall?
M. Pospelov, 2 S. Pustelny, 4, ∗ M. P. Ledbetter, D. F. Jackson Kimball, W. Gawlik, and D. Budker 6 Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 1A1, Canada Perimeter Institute for Theoretical Physics, Waterloo, ON N2J 2W9, Canada Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland Department of Physics, University of California at B...
متن کاملRan
How is Ran involved in nuclear transport? Cargo is transported through pores in the nuclear envelope, in association with carriers that bind to pore proteins called nucleoporins. A Ran–GTP gradient across the envelope is created by the asymmetric distribution of the GTPase activating protein known as RanGAP, which is in the cytosol, and of the guanine nucleotide exchange factor RanGEF in the nu...
متن کاملSharing a polluted river through environmental taxes
n agents located along a river generate residues that then require cleaning to return the river to its natural state, which entails some cost.We propose several rules to distribute the total pollutant-cleaning cost among all the agents. We provide axiomatic characterizations using properties based on water taxes. Moreover, we prove that one of the rules coincides with the weighted Shapley value...
متن کاملSmall GTPase Ran and Ran-binding proteins.
Abstract Like many other small GTPases, Ran functions in eukaryotic cells as a molecular switch that cycles between GTP- and GDP-bound forms. Through the proper modulation of the GTP/GDP cycle, Ran functions with a number of Ran-binding proteins to control a broad array of fundamental cellular functions, including nucleocytoplasmic transport, mitotic spindle assembly, and nuclear envelope and n...
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ژورنال
عنوان ژورنال: Nature Geoscience
سال: 2013
ISSN: 1752-0894,1752-0908
DOI: 10.1038/ngeo1935