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i just came across a lysine-lysine bond in a b-barrel n-termini fragment that's embedded in the membrane
Yes, it is rich in lysine.
No. Lysine is an amino acid. Amino acids are the building blocks of proteins.
tryptophan and lysine
lysine
Olives or olive oil is not renowned as a source of lysine. Beans and pulses are the usual vegetable sources of lysine.