GDNF GI:40549411 glial cell derived neurotrophic factor isoform 2 precursor 1 mklwdvvavc lvllhtasaf plpaanmped ypdqfddvmd fiqatikrlk 50 51 rspdkqmavl prrernrqaa aanpensrgk grrgqrgknr gcvltaihln 100 101 vtdlglgyet keelifrycs gscdaaetty dkilknlsrn rrlvsdkvgq 150 151 accrpiafdd dlsflddnlv yhilrkhsak rcgci