240 likes | 1.13k Views
Elettroforesi. (segue). SDS-PAGE. Pozzetti. Stacking gel. Running gel. Elettroforesi di proteine in condizioni native.
E N D
Elettroforesi (segue)
SDS-PAGE Pozzetti Stacking gel Running gel
Elettroforesi di proteine in condizioni native (A) Analysis of binding of the b subunit cytoplasmic domain (bsol) to ECF1 and ECF1 (-). Mixtures of polypeptides were first analyzed by native agarose gel electrophoresis (A) through a 1% agarose gel. Lanes from left to right: I, ECF1 (-) II, bsol ; III, IV, bsol + ; V, bsol + ( 1-134); VI, bsol + ECF1 (-); VII, + ECF1 (-); VIII, bsol + + ECF1 (-); IX, ECF1 (-) + ( 1-134); X, bsol + ECF1 (-) + ( 1-134). (B) Bands were excised from the agarose gel and separated on a 10-18% gradient of polyacrylamide in SDS. Rodgers et al (1997) J. Biol. Chem. 272: 31058
Visualizzazione delle proteine separate • Coomassie brilliant blue R-250 • Coomassie brilliant blue G-250 • Silver stain • Coloranti fluorescenti • Trasferimento su membrana (blotting)
Coomassie R-250 G-250
Reazione con formaldeide Riduzione di Ag+ Silver stain
Sensibilità a confronto Comparison of the sensitivity achieved with SYPRO, silver and Coomassie brilliant blue stains. Identical SDS-polyacrylamide gels were stained with A) SYPRO Orange protein gel stain, B) SYPRO Red protein gel stain; C) silver stain and D) Coomassie brilliant blue stain, according to standard protocols.
Western blot Tank Semi-dry
ECL (Enhanced chemiluminescence) Luminol
Risultato 1 2 3 4 5 6 Lane 1: standard pei molecolari Lane 2-6: campioni
- Si O Elettroforesi capillare + - Effetto elettroendoosmotico