Proteins exhibit four levels of structure: primary (amino acid sequence), secondary (local folding like helices), tertiary (overall 3D shape), and quaternary (multiple polypeptide subunits).
Protein structure involves primary (amino acid sequence), secondary (helical due to hydrogen bonds), tertiary (overall 3D shape of a single chain), and quaternary (multiple chains assembling).
| Front | Protein Shape (4 Levels) |
|---|---|
| Back | Primary--the linear formation of an amino acid chain Secondary--the helical structure made by hydrogen bonds (a coil of amino acid chains) Tertiary--most important! Coils of amino acids making a structure, like a cloud of coils...polypeptide chain. Most responsible for protein shape, which signifies its function. Quarternary--Some proteins have multiple polypeptide chains, so they have a quarternary structure. Basically 2 tertiary structures together, or 3, 4... |
Tags: chapter_04, proteins
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Protein function grow repair enzymes build cells g
Previous card: Dipeptides amino acids joined peptide bond
Up to card list: SAT Biology Flashcards (please read description)