Notes about the PROJ file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The PROJ file type is primarily associated with 'Insight II' by Accelrys Software Inc.. Insight II is a molecular modeling environment that provides a graphical interface to algorithms for molecular dynamics, homology modeling, de novo design, and electrostatics.