AOX | alternative oxidase

application example

25 μg of Arabidopsis thaliana mitochondrial wild type fraction (1) mitochondrial fraction from a mutant with increased AOX level (2), total wild type leaf extract (3), total leaf extract from AOX overproducing mutant (4)  were separated on 10% gel and blotted on nitrocellulose membrane using wet transfer (0.22% CAPS, pH 11). Filters where blocked (1.5h) in 5% milk in TBST (1X TBS, 0,1% Tween 20), incubated with 1: 100 anti-AOX monoclonal antibodies (2h in TBST) followed by 1 h incubation with 1: 10 000 Agrisera secondary anti-mouse HRP-coupled antibodies (AS09 627) and visualized with standard ECL on Kodak autoradiography film for 15-60 s. Mitochondria were isolated as described by Urantowka et al. (Plant Mol Biol, 2005, 59:239-52). Mitochondrial pellets were suspended in 1X Laemmli buffer (5% beta-mercaptoetanol, 3.7% glycerol, 1.1% SDS, 23 mM Tris- HCl pH 6.8, 0.01% bromophenol blue), heated (95°C, 5 min.) and centrifuged (13 000rpm, 1 min.). Leaf extracts were prepared as described by Martinez-Garcia et al. (Plant J., 1999, 20:251-7).
Courtesy Dr. Janusz Piechota, Wrocław University, Poland