据疯狂英语2001,九月,第30期载：最长的是1,913个字母,是“色氨酸合成酶A蛋白质” 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.[另外.smiles 两个s中间有一里长.]