Structural comparison of α-tubulin CTT-binding proteins. (A) NMR structure of A1aY1 binder (magenta) in complex with α tubulin CTT (blue), up to seven residues of CTT interact with A1aY1 binder. (B) Structures of VASH2-SVBP:EGEEY (PDB: 6JZD), VASH1-SVBP:EGECY (PDB: 6J8F), P150-CAP-Gly:EB1C (PDB: 2HL3), and CAP-Gly:EEEGEEY (PDB: 2E4H), with α-tubulin CTT in blue and proteins in gray.