Located at the head of the 40S ribosomal subunit in the vicinity of the mRNA exit channel, it serves as a scaffold protein that can recruit other proteins to the ribosome. Involved in the negative regulation of translation of a specific subset of proteins (By similarity). Plays a role in morphogenesis and pathogenesis. Component of the small (40S) ribosomal subunit. Causes defects in hyphal development under hypha-inducing conditions and attenuates virulence in a mouse model of systemic infection. Has antigenic properties. Elicits a specific immune response in systemic candidiasis human patients undergoing malignant hematological disorders. Belongs to the WD repeat G protein beta family. Ribosomal protein RACK1 subfamily.