منابع مشابه
Transport if loaded
Transport if loaded uclear transporters can be viewed as taxis that move cargo across the nuclear envelope. On page 649, Plafker et al. report that importin-11, a nuclear transport receptor , may be an especially selective cabbie. Importin-11 transports UbcM2, a ubiquitin (Ub)-conjugating enzyme, but it does so only when the enzyme is charged with a Ub at its active site. UbcM2 is an E2 enzyme,...
متن کاملEmbedding If and Only If
Compounds of indicative conditionals present some puzzling phenomena. Perhaps most striking, some nested indicative conditionals are uninterpretable. Proponents of NTV hold that indicative conditionals do not have truth values, and they use this to explain why nested indicative conditionals are sometimes uninterpretable: the embedded conditional does not provide the truth conditions needed by t...
متن کاملEven if after If then conditionals
This study evaluates how people represent “even if” conditionals when they have to integrate them with previous “if then” conditionals and also make an inference. The terms in the premises were ordered to facilitate their integration (Figure 1: If A then B; Even if B C). In half the cases, the “even if” conditional was expressed with a negation instead of an affirmation (If A then B; Even if no...
متن کاملHighly Loaded Behavior of Kinesins Increases the Robustness of Transport Under High Resisting Loads
Kinesins are nano-sized biological motors which walk by repeating a mechanochemical cycle. A single kinesin molecule is able to transport its cargo about 1 μm in the absence of external loads. However, kinesins perform much longer range transport in cells by working collectively. This long range of transport by a team of kinesins is surprising because the motion of the cargo in cells can be hin...
متن کاملSalt Loaded Heat Pipes: Steady-state Operation and Related Heat and Mass Transport
There is evidence suggesting that fluids in the root zone of many hydrothermal systems (at the brittle-ductile transition zone, about 3-4 km) can be highly saline. Therefore, fluid (state) can be expected to be in subcritical conditions and intensive multiphase convection may occur at those depths. The particular type of fluid-solid interaction and as well as the fluid state depends on the flui...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 2004
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb1674iti3