Immunoprecipitation of preassembled complexes. Immunoprecipitates with C11.6 (anti-HCβ) or no antibody (control) from WT and oda1–oda11 cytoplasmic extracts were separated on 7% gels, blotted to PVDF membrane, and probed with B3B (anti-HCα), C11.6 (anti-HCβ), 25–8 (anti-HCγ), 1878A (anti-IC78), or 1869A (anti-IC70). Immunoprecipitates of oda1 extracts showed the presence of all five major outer-dynein arm proteins at equivalent levels to WT, as did immunoprecipitates of oda3, 5, 8, and 10. The immunoprecipitate of oda11 lacked only HCα; the immunoprecipitate of oda7 lacked HCα and had greatly reduced levels of IC70 and IC78, whereas no proteins coprecipitated with HCβ in oda2, oda6, or oda9. The oda4 lanes serve as a no-antigen control.