Biology Glossary search by : A protein that aids in the folding of a second protein. This is because it is now much easier to sequence DNA. molecular chaperone : Definition: Search for: Biology Glossary. Instead, since it has been worked out (mostly) how DNA codes for protein, we usually infer the protein sequence from the DNA sequence. Binding to a protein or a protein-containing complex to assist the protein folding process.
However, it is now relatively rare to directly determine protein sequence! 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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