Fig. 5. Phospholamban phosphorylation after stretch. Phospholamban (PLN) phosphorylation at serine 16 was unaffected by myocardial stretch either in the absence ("St") or presence ("St+SB") of SB202190 compared to non-stretched controls ("C"). Representative blots (top) and averaged data (bottom) under all experimental conditions are shown. PLN phosphorylation was expressed as % of its maximal phosphorylation state induced by 100 nmol/L isoproterenol ("Iso"). * indicates p<0.05 vs. all other groups.