The term `` protein '' itself was coined by Berzelius , after Mulder observed that all proteins seemed to have the same empirical formula and came to the erroneous conclusion that they might be composed of a single type of ( very large ) molecule .
The term `` protein '' itself was created by Berzelius , after Mulder noticed that all proteins seemed to have the same formula and might be made of a single type of a ( very large ) molecule .