Figure 1. Zeta-tubulin is a conserved tubulin that associates with TRiC/CCT.
A) Presence or absence of ZED module tubulins in representative organisms. B) Unrooted phylogenetic tree, based on Clustal Omega alignment. CāE) Sucrose gradient sedimentation of zeta-tubulin from C) A6 cells, D) eggs, and E) whole oviduct. Lysates were separated on 10ā40% sucrose gradients and fractions probed for zeta-tubulin, the TRiC/CCT component CCT2, and gamma-tubulin. Molecular weights in kilodaltons (left), and increasing sucrose concentration, left to right, (above) are indicated. Dividing line in E) indicates joint between two membranes, probed and developed identically. See also Table S1 and Figure S1.
