Western blot (see application notes below). Suggested blocking buffer is TBS-Tween with 2% BSA. Suggested dilution buffer is TBS-Tween with 0.05% sodium azide. Preferred gel percentage is 5% (see application notes).
Immunohistochemistry on frozen and paraffin embedded tissue sections. Suggested fixation for frozen tissue sections is acetone fix for 6 minutes at room temperature. For formalin fixed paraffin embedded tissue sections: microwave in 0.01M citrate buffer (pH 6.0) for 8-10 minutes (note that all microwaves differ and adjustments may need to be made) follow with enzyme digestion (0.01% pronase for 10 mintues). Suggested blocking agent is fetal bovine serum.
Immunoprecipitation. Suggested extraction buffer is 20 mM Tris-HCl, pH 7.4, 150 mM NaCl, 1% Triton X-100, 0.1% SDS, 0.5% deoxycholic acid-NaCl and 0.5 mM PMSF. Final reaction volume is 1 mL and suggested capture agent is agarose conjugated anti-mouse IgG.
Optimal working dilutions must be determined by the end user.
APPLICATION NOTES FOR MAB3568
To achieve good resolution of myosin heavy chain isoforms with distinct molecular weight (200 - 2004 kDa), the following procedure should be followed: 1). Pyrophoshate extraction buffer for sample preparation (see below); run SDS-PAGE in 5% gel. Important: for better resolution of the MHC bands, use electrophoretic buffer with pH 8.2 (i.e. 0.1 less than standard), and prepare resolving gel (5%) with pH 9.0 (not 8.8 as usual). Also help thorough degasing of the resolving gel mixture (H2O, acrylamide, EDTA, pH 9.0, before (!) adding SDS, TEMED and APS). Run SDS-PAGE longer than after the dye front runs off (use 200 kDa MW markers and let it′s 200 kDa band run at least to the middle of 8X8 gel (using a big size gel (not the mini-gel!) will enhance the quality of MHC band resolution).
Pyrophosphate extraction buffer: (40mM Na4P2O7x10H2O, 1mM MgCl2, 1mM EGTA (add KOH to dissolve EGTA), PMSF, pH 9.5). To extract acto-myosin from tissues/cells, shake minced tissue or cells in cold extraction buffer 1 hr on ice bath (0oC), centrifuge @10,000g for 10 min at +2-8 oC, take supernatant and mix it 1:1 with standard Laemmli sample buffer, boil, run SDS-PAGE in 5% gel (see above).
This Anti-Myosin Antibody, smooth muscle heavy chain, SM1 & SM2, clone ID8 is validated for use in IP, WB, IC, IH(P) for the detection of Myosin.