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colleen colleen
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10 years ago
Describe the four structural levels of proteins.
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10 years ago
hi
Source  martini textbook pg52
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10 years ago
Primary strucutre: is the sequence of a chain of amino acids that determine the 3D structure, it's linear polymer formed by linking alpha - carboxyl of amino acid to alpha - amino group of another, location of covalent linkages Rightwards Arrow disulfide bonds between amino acids

Secondary structure is the sequence of amino acids linked by H - bonds, the poylypeptide chains fold into an alpha - helix and beta - pleated sheet formed by H - bonds between peptide, NH & C, it has areas of folding/coiling within the protein.

Tertiary is the certain attractions between alpha helix and beta sheets giving the final 3D structure,

Quaternary is has multiple polypeptide chains that make one protein
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padrepadre
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10 years ago
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