Figure 9

Schematic representation of SAP organization relative to the SDV membrane. Putative interactions of phosphorylated serines with Long Chain Polyamines (LCPAs) or peptide bound polyamines (PAs) and silicic acid are shown inside the SDV lumen. Putative cleavage sites of cleavage and interactions between cytoplasmic proteins and the conserved domain are shown in the cytoplasm.