Most cells lack RIII, TGF-β binds directly to the RII

dimer, but Active RII kinase activity is not sufficient to generate an intracellular signal

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Techniques for Measuring Stability

Absorbance (e.g. Trp, Tyr) 

Fluorescence (Trp)-difference in emission max & intensity.

CD (far or near UV) - (2o or 3o) 

NMR 

DSC (calorimetry) 

Urea gradient gels - difference in the migrating rates between F and U.

Catalytic activity 

Chromophoric or fluorophoric probes/FRET 

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#XL - T Zoology

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#XL - T Zoology

The entire process of rhodopsin phosphorylation and its inactivation by arrestin is fast completed within 50ms. 

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Ruderals - Ruderals are adapted to take advantage of habitat disturbance, (High disturbance,  low competition,  low stress tolerance)

Ex - Insect , annual species

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#XL - T Zoology

Gradualism is Darwin’s proposition that the differences between even radically different organisms have evolved by small steps through intermediate forms,  not by leaps