According to a book my daughter brought home from school yesterday, the longest word in the English language is 1913 letters. It is the scientific name for tryptophan synthetase A protein, an enzyme that has 267 amino acids.
methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanyl-
glutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanyl-
valylprolylphenylalanylvalylthreonylleucylglycylaspartylprolylglycyl-
isoleucylglutamylglutaminylserylleucyllysylisoleucylaspartylthreonylleucyl-
isoleucylglutamylalanylglycylalanylaspartylalanylleucylglutamylleucyl-
glycylisoleucylprolylphenylalanylserylaspartylprolylleucylalanylaspartyl-
glycylprolylthreonylisoleucylglutaminylasparaginylalanylthreonylleucyl-
arginylalanylphenylalanylalanylalanylglycylvalylthreonylprolylalanyl-
glutaminylcysteinylphenylalanylglutamylmethionylleucylalanylleucyl-
isoleucylarginylglutaminyllysylhistidylprolylthreonylisoleucylprolyl-
isoleucylglycylleucylleucylmethionyltyrosylalanylasparaginylleucylvalyl-
phenylalanylasparaginyllysylglycylisoleucylaspartylglutamylphenylalanyl-
tyrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylaspartylseryl-
valylleucylvalylalanylaspartylvalylprolylvalylglutaminylglutamylseryl-
alanylprolylphenylalanylarginylglutaminylalanylalanylleucylarginylhistidyl-
asparaginylvalylalanylprolylisoleucylphenylalanylisoleucylcysteinylprolyl-
prolylaspartylalanylaspartylaspartylaspartylleucylleucylarginylglutaminyl-
isoleucylalanylseryltyrosylglycylarginylglycyltyrosylthreonyltyrosylleucyl-
leucylserylarginylalanylglycylvalylthreonylglycylalanylglutamylasparaginyl-
arginylalanylalanylleucylprolylleucylasparaginylhistidylleucylvalylalanyl-
lysylleucyllysylglutamyltyrosylasparaginylalanylalanylprolylprolylleucyl-
glutaminylglycylphenylalanylglycylisoleucylserylalanylprolylaspartyl-
glutaminylvalyllysylalanylalanylisoleucylaspartylalanylglycylalanylalanyl-
glycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylisoleucyl-
isoleucylglutamylglutaminylhistidylasparaginylisoleucylglutamylprolyl-
glutamyllysylmethionylleucylalanylalanylleucyllysylvalylphenylalanylvalyl-
glutaminylprolylmethionyllysylalanylalanylthreonylarginylserine
Use that in a sentence. Happy weekend. I hope it feels equally as long.