最长的英语单词

12.最后,史上最……最长的英文单词华丽登场（请做好心理准备）——1913个字母,“色氨酸合成酶a蛋白质”（一种含有267种氨基酸酶）的化学名：
methionylglutaminylarginyltyrosylglutamylserylleucyl-phenylalanylalanylglutaminylleucyllysylglutamylarginylly-sylglutamylglycylalanylphenylalanylvalylprolyphenylalany-lvalythreonylleucylglycylaspartylprolylglycylisoleucyl-glutamylglutaminylserylleucyllysylisoleucylaspartylthre-onylleucylisoleucylglutamylalanylglycylalanylasparthlal-anylleucylglutamylleucylglycylisoleucylprolylphenylalany-lserylaspartylprolylleucylalanylaspartylglycylprolylthreon-ylisoleucylglutaminylaspfraginylalanylthreonylleucylarfinyl-alanylphenylalanylalanylalanylglycylvalythreonylprolylalany-lglutaminylcysteinylphenylalanylglutamylmethionylleucylalan-ylleuoylisoleucylarginylglutaminyllysyhistidylprolylthreony-lisoleucylprolylisoleucylglycylleucylmethionyltyrosylalanyla-sparaginylleucylvalylphenylalanylasparaginyllysyglycylisoleuc-ylaspartylglutamylphenylalanylthrosylalanylglutaminylcysteinyl-glutamyllysylvalylglycylvalylaspartylserylvalylleucylvalylalnyl-aspartylvalylprolylvalylglutaminylglutamylserylalanylprolylpheny-lalanylarginylglutaminylalanylalanylleucylarginylhistidylasparag-inyvalylalanylprolylisoleucylprolylisoleucylphenylalanylisoleucyl-phenylalanylisoleucylcysteinylprolylprolylaspartylalanylaspartylas-partylaspartylleucylleucylarginylglutaminylisoleucylalanylseryltyr-osylglycylarginylglycyltyrosylthreonyltyrosylleucylleucylserylarginy-lalanylglycylvalylthreonylglycylalanylglutamylasparainylarginylalan-ylalanylleucylprolylleucylasparaginylhistidylleucylvalylalanyllysyll-eucyllysylglutamyltyrosylasparaginylalanylalanylprolylprolylleucylgl-utaminylglgycylphenylalanylglycylisoleucylserylalanylprolylaspartylg-lutaminylvalyllysylalanylalanylisoleucylaspartylalanylglycylalanylal-anylglycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysyli-soieucylisoleucylglutamylglutaminylhistidylasparaginylisoleucylglu-tamylprolylglutamyllysylmethionylleucylalanylalanylleucyllysylvaly-lphenylalanylcalylglutaminylprolylmethionlysylal-anylalanylthreonylarginylserine