BDNF GI:25306235 brain-derived neurotrophic factor isoform b preproprotein 1 mfhqvrrvmt ilfltmvisy fgcmkaapmk eanirgqggl aypgvrthgt 50 51 lesvngpkag srgltsladt fehvieelld edqkvrpnee nnkdadlyts 100 101 rvmlssqvpl eppllfllee yknyldaanm smrvrrhsdp arrgelsvcd 150 151 sisewvtaad kktavdmsgg tvtvlekvpv skgqlkqyfy etkcnpmgyt 200 201 kegcrgidkr hwnsqcrttq syvraltmds kkrigwrfir idtscvctlt 250 251 ikrgr