>sp|Q9UBL0-2|ARP21_HUMAN Isoform 2 of cAMP-regulated phosphoprotein 21 OS=Homo sapiens OX=9606 GN=ARPP21 MSEQGDLNQAIAEEGGTEQETATPENGIVKSESLDEEEKLELQRRLEAQNQERRKSKSGA GKGKLTRSLAVCEESSARPGGESLQDQTL