Proteins are condensation polymers of amino acids. The is the amino acid sequence. The is the local structure over short distances. This level of structure is stabilized by along the . These secondary structures pack together to form the overall form of the entire peptide chain, called the . Some proteins, such as the displayed hemoglobin molecule, have more than one polypeptide chain that associate to form the functional unit of the protein; this is called .
Questions based upon these scenes:
What is the primary sequence shown in the first link?
Is the secondary structure shown an alpha helix or beta sheet?
The ith C=O of the backbone is hydrogen bonded to which N(-H) (use i +/- # to represent the number)?
What atom does this program NOT show?
Ways of representing protein structure
Secondary Structures
