Figure 3. Structures and locations of MIPs.

(a) Cross section of the surface rendering of 48-nm repeat doublet density map (left) and corresponding cartoon (right) with the microtubule associated protein coloured. Our nomenclature of globular MIPs is adapted from Maheshwari et al.,¹⁵. (b–g) Longitudinal cross sections of the surface rendering of the 48-nm map focusing on MIP1 and fMIPs-A6A7 and A7A8 in b, MIP6 and fMIP-A12A13 in c, MIP2/4 and fMIP-A11A12 in d, MIP3 and fMIP-B8B9 in e, the other fMIPs and minor MIPs (Supplementary Note 1) in the B-tubule in f, and MIP5 and MIP7 in g. In b–g tip of the cilia (+ end) is toward the left side. Black lines and arrows in the cartoons of the doublet on the left indicate the sections and viewing directions on the right. Red arrows from the side represent fMIPs inside the doublet and blue arrow indicates continuous density binding outside the doublet. White arrowheads show lateral contacts between neighbouring MIPs. Unsharpened map was used for the generation of figure. The colours of the MIPs are consistent in all figures.