what is the tertiary structure of a peptide?
This level of structure describes how regions of secondary structure fold together – that is, the 3D arrangement of a polypeptide chain, including a helices, b sheets, and any other loops and folds. Tertiary structure results from interactions between side chains, or between side chains and the polypeptide backbone, which are often distant in sequence. Every protein has a particular pattern of folding and these can be quite complex.
This level of structure involves ionic bonds, disulfide bridges, van der waals forces, hydrogen bonds, and hydrophobic interactions