Deletion of Methionylglutaminyl...serine

Comment: Even if it is  as being in the Guinness, I see no reason why this is encyclopedic.  One could create articles for the drawn out sequential name of every protein, a good number of which are many times longer than this one.  Tryptophan synthase is good enough for me
Stance: delete
Cited policy: Wikipedia:Verifiability (WP:V)