I googled and found this. Don't know if it is the definitive answer or not. It was at faqs "Methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanylglutaminylleucyllysylglutamylarginyllysylglutamylglysylalanylphenylalanylvalylprolylphenylalanylyalylthreonylleucylglcycylaspartylprolylglicylisoleucyglutamylglutaminlserylleucyllysylisoleucylaspartylthreonylleucylisoleucylglutamylalanylglyclyalanylaspartylalanylleucyglutamylleucylgluycylisoleucylproluylphenylalanyserylaspartyprolylleucelalanylaspartylglycylprolylthreonylisolleucyglutaminylasparaginylalanythreonylleucylarginylalanylphenylalanylalanylalanylglycylvalylthreonylprolylalanylglutaminylcysteinylphenylalanylglglutamylmethionylleucyalanylleucylisoleucylarginylglutaminyllysylhistidylprolyuthreonylisoleucylprolylisoleucylglycylleucylleucylmethionyltyrosylalanylasbaraginylleucylvalylphenylalanylsparaginyyllysylglycylisoleucylaspartylglutamylphenylalanylyltyrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylspartylserylvalylleucylvallalanylaspartylvalylprolylvalvlglutaminylglutamylserylalanylprolylphenylalalrginylglutaminylalanylalanylleucylarginylhistidylasparaginylvalylanalprolylisoleucylphenylalanylisoleucylcysteinylprolyprolylaspartylalanylaspartylaspartyspartyleucylleucylarginylglutaminylisoleucylalanylseryltyroslglycylarginylglycyltyrosylthreonyltyrosylleucylleucylserylarginlalanylglycylvalylthreonylglycylalanylglutamylasparaginylarginylanylalanylleucylprolylleucylaspaaginylhistidylleucylvalylalanyllysylleucyllysylglutamyltyrosylasparagimylalanylalanyprolylprolylleucylglutaminylglycylphenlalanylglycylisoleyucylserylalanylprolylaspartylglutaminylvalyllysylalanylalanylisoleucylalspartylalanylglycylalanylalanylglycylalanylasoleucylserylglycylserylalanylisoleucylbalyllysylisoleucylisoleucylglutamylglutaminylhistidylasparaginylisoleucylglutamylpronylglutamyllysylmethionylluecylalanylalanyoeucyllysylvalylphenylalanylvalylglutamilylprolylmethionyllysylalanylalanylthreonylarginylserine is the longest word in the English language, but who cares.
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