PDGFB GI:15451786 platelet-derived growth factor beta isoform 2 preproprotein 1 mfimglgdpi peelyemlsd hsirsfddlq rllhgdpgee dgaeldlnmt 50 51 rshsggeles largrrslgs ltiaepamia ecktrtevfe isrrlidrtn 100 101 anflvwppcv evqrcsgccn nrnvqcrptq vqlrpvqvrk ieivrkkpif 150 151 kkatvtledh lackcetvaa arpvtrspgg sqeqraktpq trvtirtvrv 200 201 rrppkgkhrk fkhthdktal ketlga