The formation of secondary and tertiary structures in proteins drives them towards
achieving high packing densities. We use a grid based method to compute the packing fraction of proteins.
A distribution of packing faction for a dataset of ~1000 representative proteins from PDB database is generated (fig).
This filter can be employed to evaluate the value of packing fraction for a given protein and to find out
whether the value is in acceptable limits for globular proteins or not. HOW TO USE TOOL