May participate in O-glycosylation. Expression appears at the growth phase stage and rapidly increases after starvation began. It reaches its peak at 3 hours and is continually expressed for 12 hours after starvation has begun. Down-regulated by phagocytic stimuli. Displays down-regulation of regA, cAMP-dependent phosphodiesterase, and overexpression of protein tyrosine kinase during early development and its shutdown during late development.