Self-multimerization of PSD-Zip45 mediated through the extreme
COOH-terminal leucine zipper motif. (a) Schematic
diagram of structural domains of PSD-Zip45. (b) Helical
wheel projection of ZipA and ZipB, respectively. (c)
Schematic diagram of PSD-Zip45 and its deletion mutants.
(d) Self-multimerization assay. All recombinant proteins
were treated with or without glutaraldehyde and were separated by
SDS/PAGE (14%). Δ, monomer; *, dimer;
**, tetramer; ▴, multimer.