Using Computers to Study Molecular Structure
About secondary structure
Regular coiling of the chain of amino acids in a protein is known as "secondary structure". The helix ("alpha" helix) and sheet ("beta" sheet) are the most common secondary structures found in proteins. When you view the helix in MacMolecule, note the coiling of the amino acid chain to form a long cylindrical structure. The chain coils around an imaginary line known as the helix axis. (Only the first carbon atom of the amino acid side chains is shown in the MacMolecule graphic.)
Opening secondary structures in MacMolecule
When you choose a secondary structure from the list below, MacMolecule will automatically open that file. You can switch back to Netscape by choosing Netscape from the Applications Menu.
University of Arizona
Wednesday, September 9, 1998
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