Li-amino acid ke lintho tsa mantlha tse etsang liprotheine, 'me ke metsoako ea lintho tse phelang moo liathomo tsa hydrogen tse holim'a liathomo tsa carbon tsa carboxylic acid li nkeloang sebaka ke lihlopha tsa amino.
Haeba u thahasella lihlahisoa tsa rona, u ka khetha ho siea lintlha tsa hau mona, 'me re tla buisana le uena haufinyane.