methionylglutaminylarginyltyrosylglutamylserylleucylphenylal anylalanylglutaminylleucyllysylglutamylarginyllysylglutamylg lycylalanylphenylalanylvalylprolylphenylalanylyalylthreonyll eucylglycylaspartylprolylglycylisoleucylglutamylglutaminylse rylleucylly

This 1913 letter word is the longest word in the English language and is the chemical name for tryptophan synthetase A protein. It appears in Mrs Byrne's Dictionary of Unusual, Obscure and Preposterous Words.

Haha. Yeah right.

methionylglutaminylarginyltyrosylglutamylserylleucylphenylal anylalanylglutaminylleucyllysylglutamylarginyllysylglutamylg lycylalanylphenylalanylvalylprolylphenylalanylyalylthreonyll eucylglycylaspartylprolylglycylisoleucylglutamylglutaminylse rylleucylly by Roach Clip January 17, 2004

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methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanyla lanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalany lphenylalanylvalylprolylphenylalanylvalylthreonylleucylglycylaspa rtylprolylglycylisoleucylglutamylglutaminylserylleucyllys

The full name of the tryptophan synthetase A protein, an enzyme with 267 amino acids

methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanyla lanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalany lphenylalanylvalylprolylphenylalanylvalylthreonylleucylglycylaspa rtylprolylglycylisoleucylglutamylglutaminylserylleucyllysylisoleu cylaspartylthreonylleucylisoleucylglutamylalanylglycylalanylaspar tylalanylleucylglutamylleucylglycylisoleucylprolylphenylalanylser ylaspartylprolylleucylalanylaspartylglycylprolylthreonyliso leucylglutaminylaspfraginylalanylthreonylleucylarginylalanylpheny lalanylalanylalanylglycylvalylthreonylprolylalanylglutaminylcyste inylphenylalanylglutamylmethionylleucylalanylleucylisoleucylargin ylglutaminyllysylhistidylprolylthreonylisoleucylprolylisoleucylgl ycylleucylleucylmethionyltyrosylalanylasparaginylleucylvalylpheny lalanylasparaginyllysylglycylisoleucylaspartylglutamylphenylalany ltyrosylalanylglutaminylcysteinylglutamyllysylvalylglycylva lylaspartylserylvalylleucylvalylalanylaspartylvalylprolylvalylglu taminylglutamylserylalanylprolylphenylalanylarginylglutaminylalan ylalanylleucylarginylhistidylasparaginylvalylalanylprolylisoleucy lphenylalanylisoleucylcysteinylprolylprolylaspartylalanylaspartyl aspartylaspartylleucylleucylarginylglutaminylisoleucylalanylseryl tyrosylglycylarginylglycyltyrosylthreonyltyrosylleucylleucylseryl arginylalanylglycylvalylthreonylglycylalanylglutamylasparag inylarginylalanylalanylleucylprolylleucylasparaginylhistidylleucy lvalylalanyllysylleucyllysylglutamyltyrosylasparaginylalanylalany lprolylprolylleucylglutaminylglycylphenylalanylglycylisoleucylser ylalanylprolylaspartylglutaminylvalyllysylalanylalanylisoleucylas partylalanylglycylalanylalanylglycylalanylisoleucylserylglycylser ylalanylisoleucylvalyllysylisoleucylisoleucylglutamylglutaminylhi stidylasparaginylisoleucylglutamylprolylglutamyllysylmethio nylleucylalanylalanylleucyllysylvalylphenylalanylvalylglutaminylp rolylmethion yllysylalanylalanylthreonylarginylserine is a very long word (1,913 letters)

methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanyla lanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalany lphenylalanylvalylprolylphenylalanylvalylthreonylleucylglycylaspa rtylprolylglycylisoleucylglutamylglutaminylserylleucyllys by Veer April 13, 2004

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methionylglutaminylarginyltyrosylglutamylserylleucyl phenylalanylalanylglutaminylleucyllysylglutamylarginyl lysylglutamylglycylalanylphenylalanylvalylprolylphenyl alanylvalylthreonylleucylglycylaspartylprolylglycylisol eucylglutamylglutaminylserylleucylly

A chemical compound with combination of many amino acids. 1912 letters long.

OMG I have to write a scientific essay about methionyl..........phenylalanylvalylglutaminylprolylmethionyllys! It'll take me forever just to write the word!

methionylglutaminylarginyltyrosylglutamylserylleucyl phenylalanylalanylglutaminylleucyllysylglutamylarginyl lysylglutamylglycylalanylphenylalanylvalylprolylphenyl alanylvalylthreonylleucylglycylaspartylprolylglycylisol eucylglutamylglutaminylserylleucylly by notAmerican August 29, 2005

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methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanyla lanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalany lphenylalanylvalylprolylphenylalanylvalylthreonylleucylglycylaspa rtylprolylglycylisoleucylglutamylglutaminylserylleucyllys

The full name of the tryptophan synthetase A protein, an enzyme with 267 amino acids. This word is considerably longer than either antidisestablishmentarianism or pneumonoultramicroscopicsilicovolcanoconiosis.

This is a photo of pneumonoultramicroscopicsilicovolcanoconiosis

methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanyla lanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalany lphenylalanylvalylprolylphenylalanylvalylthreonylleucylglycylaspa rtylprolylglycylisoleucylglutamylglutaminylserylleucyllys by Scion April 15, 2004

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methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanyl- glutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanyl- valylprolylphenylalanylvalylthreonylleucylglycylaspartylprolylglycyl- isoleucylglutamylglutaminylserylleucyl

Including scientific words, this is officially the longest word in the English language, smashing pneumonoultramicroscopicsilicovolcanoconiosis and antidisestablishmentarianism.

There is a guy in the town of Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch who makes 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!

methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanyl- glutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanyl- valylprolylphenylalanylvalylthreonylleucylglycylaspartylprolylglycyl- isoleucylglutamylglutaminylserylleucyl by Age May 31, 2004

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methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanylglutaminyll eucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanylvalylprolylphenylal anylvalylthreonylleucylglycylaspartylprolylglycylisoleucylglutamylglutaminylseryl leucyllys

The longest word in the English language. It is the long spelling of the tryptophan synthetase A protein.

Arrgh! I can't say it!

methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanylglutaminyll eucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanylvalylprolylphenylal anylvalylthreonylleucylglycylaspartylprolylglycylisoleucylglutamylglutaminylseryl leucyllys by someone March 2, 2004

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