Adaptor proteins in desmosomes include
Adaptor proteins contain modular interaction domains but lack intrinsic catalytic activity; they function solely to bring other proteins into proximity. Scaffold proteins organize multiple components of a pathway into a discrete complex, thereby enhancing specificity, speed and spatial restriction of signaling. Both classes of proteins are essential for the fidelity of intracellular information transfer.
Ref: NCERT Biology Class 11–12 Alberts et al Molecular Biology of the Cell Lodish et al, Molecular Cell Biology Cooper & Hausman, The Cell Abbas et al., Cellular and Molecular Immunology (for immunology sections)