Figure 2. Mass Spectra of τ in the Presence of Various Subunits.
(A) In the presence of δ′, τ forms three subcomplexes, τ3δ′, τ2δ′, and τδ′ but not τ4δ′.
(B) None of the oligomeric species of τ associates with δ.
(C) The ψχ complex binds to τ, forming τ4ψχ and τ3ψχ.
(D) δ does not associate with τ in the presence of ψχ. See also Figure S1 for the γ subunit interaction and Table S1.