Mice in the acarbose group, and their controls, were fasted for four hr prior to sacrifice and killed between noon and 1 pm.
The model with three Ka/Ks ratios was significantly better than the model with a single Ka/Ks ratio under all 12 jackknifed phylogenetic hypotheses for four HR genes: addA_1, addB, recO, and ruvA (all P < 0.05; table 2 and supplementary table S5, Supplementary Material online).
The tubes were left at −20°C for two hrs and then centrifuged at 8500 rpm at 4°C.
The flasks were incubated for two hrs at 25°C with shaking at 200 RPM, then at 42°C for 8 hrs, and held at 4°C without shaking until the following morning.
Gels were gently agitated for 30 min at room temperature in a filtered staining solution (20% methanol; 2% glycerol; 0.05% Toulidine Blue), then destained for two hrs with several changes of the same solution without dye.
For immunoblotting analysis with IIH6C4, MANDAG2-7D11, anti-c-Myc-Myc antibodies, PVDF membranes were blocked with 3% BSA in TBST (50 mM Tris, pH 7.4, 150 mM NaCl, 0.05% Tween-20) for 30 min and incubated with primary antibodies in TBST and 3% BSA for two hrs.
To further rule out the possibility that the protective effect of rapa on cell death is linked to its G1 function, cdc13-1 cells were pre-incubated at the non-permissive temperature (37°C) for two hrs to allow the majority of cells (greater than 95%) to exit G1 and accumulate at the G2/M phase (Fig. 2A).
For hyperinsulinemic-euglycemic clamp experiments, rats were given a primed, continuous insulin infusion (as above) for two hrs.
After run, the gel was blotted on the chromatographic paper CP3M (PALL Life Sciences) and vacuum dried for two hrs before subjecting it to autoradiography for 2 3 days at -70°C depending on the signal intensity.
