Figure 5.

The DC3-deletion strain assembles a “partial” docking complex. Axonemal cross sections from a strain lacking outer arms but retaining the ODA-DC (oda9), a strain lacking outer arms and the ODA-DC (oda3), and the DC3-deletion strain (DC3Δ). The ODA-DC is visible on oda9 axonemes as a small projection on the A-tubules at the sites where the outer dynein arms would normally attach (left, arrowheads). These projections are missing from the A-tubules of oda3 (center, arrowheads). DC3-null A-tubules that lacked the outer dynein arm frequently had a structure resembling the docking complex at sites where outer arms would normally attach (right, arrowheads). We refer to this structure as a “partial” docking complex. Bar, 25 nm.