Brains were disrupted in cold homogenization buffer (100 mM imidazole, 5 mM EDTA, 200 mM sucrose, and 0.1% sodium deoxycholate, pH 7.6).
Most have focused on the meiotic spindle [5], [12] [14] which contains dynamic microtubules [15] that are easily disrupted by cold temperatures and cryoprotectant compounds (reviewed in [16]).
Recent studies have shown that circadian clock behavior in the chestnut tree (Castanea sativa) is disrupted by cold temperatures and that the primary oscillator feedback loop is not functional at 4°C or in winter.
Transfected COS1 or A20 B cells were rinsed twice in ice-cold PBS and disrupted with ice-cold lysis buffer containing 10 mM Tris-HCl pH7.4, 100 mM NaCl, 1mM NaF, 1 mM orthovanadate, 0.5% NP-40 and Cφmplete protease inhibitors.
Transiently transfected HEK 293T cells with expression plasmids encoding RelA (3 μg), Cullin5 (4 μg), ElonginC (2 μg) and/or ORF73 (3 μg) were disrupted in ice-cold lysis buffer containing 10 mM Tris HCl (pH 7.5), 150 mM NaCl, 1% Triton X-100, 1 mM NaF, 100 μM Na3VO4 and a cocktail of protease inhibitors (Complete; Roche).
In a recent attempt to elucidate the role played by low temperatures in the onset of winter dormancy in woody plants, we showed that circadian clock behavior in the chestnut tree is disrupted in response to cold [18].
At 1.5 h p.i., cells were mechanically disrupted in 300 μl cold homogenization buffer containing protease inhibitor cocktail set III and phosphatase inhibitor cocktail set II (EMD Biosciences) and centrifuged at 6000 g for 10 min at 4°C.
Sex, work, TV, the spreading of cold butter on cold bread – all disrupted by the balloon.
The results suggest an ill-defined orthorhombic crystalline structure with dislocations and disrupted crystals formed by cold-drawing, probably as a result of molecules being pulled through the crystals.
For example, svr7, in which a chloroplast PPR protein is disrupted, is quite resistant to cold stress and shows similar chloroplast rRNA and proteins accumulation patterns under normal and cold growth conditions [ 34].
