MYBPC3 and myocardial infarction: The phosphorylation of cMyBP-C sites (p273 & p282) to total cMyBP-C was unchanged at day-1 post-MI, but significantly increased on all three phosphosites (p273, p282 and p302) at day 3, week 1, week 4 and week 8 post-myocardial infarction compared to sham.