The very first protein sequence (bovine insulin) was determined by Fredrick Sanger in 1951-2 (note that this was more than a decade before the first nucleotide sequence). There are many different techniques for directly determining protein sequences - this wikipedia article is a decent introduction: There are also methods that have been developed to remove amino acids one at a time.īy combining theses techniques it is possible to directly determine protein sequences.
This is a great question, but actually quite complicated so I'm not going to try to give a complete answer - I have given some useful links below if you wish to learn more.Įach amino acid has unique chemical properties that can be used to tell them apart.
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