This option calculates solvent accessible area of each selection in multiple objects and stores it in a table. If a molecule is specified in a multi-molecular object, the surface area of an isolated molecule is calculated and other molecules are ignored. The area is reported in square Anstroms and the probe radius is assumed to be the value set in the variable waterRadius.

Output: the macro creates table AREA . The empty comment field is added for user's future use. If the table exists, new rows are appended.

To calculate a surface area:

• Read in a protein structure (File/Open or PDB Search)
• Select the region you wish to analyse.
• Tools/Analysis/Surface Area
• A table will be displayed listing the residues in the selection along with the corresponding total surface area.