Although more than 200
different amino acids exist, the most well known are the 22 so - called proteinogenic amino acids.
Not exact matches
The Miller - Urey experiment, conducted in 1952 to simulate conditions believed to have
existed on the early Earth, produced more than 20
different amino acids, organic compounds that are the building blocks for peptides.
Prions can
exist as distinct strains — proteins that have the same sequence of
amino acids but misfold in
different ways and have distinct biological behaviours, much as
different strains of a pathogenic virus can be aggressive or weak.