From: A simple method for finding a protein’s ligand-binding pockets
C-Ring in ligand | C or N atoms in ligand recognizing by connection information in the PDB |
---|---|
Unprotonated atoms in ligand | 1) O has a connection with N, P or Zn |
2) O only has a connection with C | |
Protonated atoms in ligand | 1) Ca |
2) N has only two connection with C |