Phosphorylation of spore coat proteins during development of Dictyostelium discoideum

Abstract
Immunological evidence is presented which confirms that pp95, one of the major phosphoproteins accumulated in the development of the cellular slime mold D. discoideum, is identical with spore coat protein SP13. The site of phosphorylation is phosphoserine. The 2nd major phosphorylated component, pp74, corresponds to 2 co-migrating spore coat proteins known collectively as SP74.