有人知道世界上最长的英文单词么？

smile

是“色氨酸合成酶A蛋白质”

Methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalany

lglutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenyla

lanylvalylprolyphenylalanYlvalythreonylleucylglycylaspartylprolylglyc

ylisoleucylglutamylglutaminylsErylleucyllysylisoleucylaspartylthreony

lleucylIsoleucylglutamylalanylglycylalanylasparthlalanylleucylglutamy

lleucylglycylisoleucylprolylphenylalanylseRylaspartylprolylleucylalan

ylaspartylglycylpRolylthreOnylisoleucylglutaminylasPfraginylalanylthr

eonylleucylarfinylalanylphenylalanylalanylalanylglycylvalythreonylpro

lylalanylglutaminylcysteinylphenylalanylglutamylmethionylleucylalanyl

leuOylisoleucylarginylglutaminyllysyhistidylprolylthreonylisoleucylpr

olylisoleucylglycylleucylmethionyltyrosylalanylasparaginylleucylvalyl

phenylalanylasparaginyllysyglycylisoleucylaspartylglutamyl