Phase 1 - This is first phase where a query sequence is being predicted as enzyme or non-enzyme
Phase 2 - This phase will run phase1 first followed by phase2 where a query sequence is first predicted as enzyme or non-enzyme followed by prediction of enzyme as Nitrogen biochemical network-related or Non-nitrogen biochemical network-related .
Phase 3 - This phase classify Nitrogen biochemical network-related enzymes predicted in Phase 2 in 9 classes
Phase 4 - This phase further predict the EC number for a selected Nitrogen biochemical network-related enzymes class predicted in phase 3