Fig. 1: Schematic representation of the positions of MIP modules inside the motile cilia outer doublet of C. reinhardtii and H. sapiens based on cryo-EM structures of ciliary doublet microtubules.

a, b Distribution of MIPs along the axoneme at periodically defined positions. c, d Lateral distribution of MIPs at the protofilaments of the A- and B-tubules. The position of the seam and of the outer and inner junctions between the A- and B-tubules are indicated.