Copyright © 1996 by the Regents of the University of California.

gneighbor: print the Gaussian neighborhood values for residue in a protein

gneighbor [ -p probe-radius ] [ -s sigma ] [ input-file ]

The gneighbor command reads the input Protein Data Bank format file (or standard input if omitted), and, assuming file contains the the atomic coordinates of a protein, computes and prints the Gaussian neighborhood values of each residue to standard output. The default values for the probe radius and sigma are 1.5 and 1.5 respectively; these values may be changed using the -p and -s flags.

Note: The Gaussian neighborhood values should be calculated for molecules with all atoms present. In particular, hydrogens must be added if they are missing.

Reference

Vladimir V. Nauchitel and Rajmund L. Somorjai, ``Gaussian Neighborhood: A New Measure of Accessibility for Residues of Protein Molecules,'' PROTEINS: Structure, Function, and Genetics, 15:50-61 (1993).
Conrad Huang, UCSF Computer Graphics Laboratory