Western Blot
ELISA
PROTOCOL:
1. Make up blocking solution by mixing 1 part ChemiBLOCKER™ with 1 part 1X femto-TBST/PBST (TBST or PBST also work) for blocking PVDF membranes. For nitrocellulose membranes, mix 1 part ChemiBLOCKER™ with 3 parts 1X femto-TBST (TBST or PBST also work). Note:ChemiBLOCKER™ can be used at a wide variety of dilutions, some optimization may be necessary. ChemiBLOCKER™ is NOT recommended for phospho-protein studies as it does contain phosphorylated proteins.
2. Incubate the membrane in blocking solution (10-20 mL) for 60 minutes at room temperature with shaking in a heat-sealable plastic bag.
3. Prepare antibody dilution buffer (ADB). For PVDF membranes mix 1 part ChemiBLOCKER™ with 3 parts 1X femto-TBST/PBST (TBST or PBST also work). Incubate the membrane in 5-10 mL primary antibody, diluted appropriately with ADB, for 90 min at room temperature with shaking.
4. Wash the membrane 3 times in 50 mL of 1X femto-TBST (TBST or PBST also work) for 5 min each time at room temperature with shaking.
5. Incubate the membrane in 5-10 mL secondary antibody, diluted appropriately with ADB, for 90 min at room temperature with shaking.
6. Wash the membrane as in step #4, but add one extra wash (4 washes total).
7. Wash the membrane 3 times quickly (30 sec.) in 50 mL pure deionized water each time and then process the blot, using femto-LUCENT™ detection system (or your favorite system).