Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 10 |
| Details | BINDING SITE FOR RESIDUE NA A 1001 |
| Chain | Residue |
| A | DVA8 |
| B | HOH2010 |
| A | TRP9 |
| A | DLE10 |
| B | DVA6 |
| B | VAL7 |
| B | DVA8 |
| B | HOH2005 |
| B | HOH2006 |
| B | HOH2009 |
| site_id | AC2 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE IOD A 1020 |
| Chain | Residue |
| B | DLE4 |
| C | TRP11 |
| C | HOH2008 |
| site_id | AC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE IOD A 1021 |
| Chain | Residue |
| A | TRP15 |
| A | IOD1025 |
| C | HOH2009 |
| site_id | AC4 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE IOD A 1025 |
| Chain | Residue |
| A | TRP13 |
| A | TRP15 |
| A | IOD1021 |
| A | HOH2005 |
| C | TRP15 |
| C | HOH2009 |
| D | TRP9 |
| site_id | AC5 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE NA B 1000 |
| Chain | Residue |
| A | DVA8 |
| A | DLE10 |
| B | DVA6 |
| B | VAL7 |
| B | DVA8 |
| B | HOH2005 |
| B | HOH2006 |
| B | HOH2009 |
| B | HOH2010 |
| site_id | AC6 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE IOD B 1026 |
| Chain | Residue |
| A | HOH2004 |
| B | TRP13 |
| B | TRP15 |
| site_id | AC7 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE NA C 1011 |
| Chain | Residue |
| C | DVA8 |
| C | TRP9 |
| C | DLE10 |
| C | HOH2005 |
| C | HOH2007 |
| D | DVA6 |
| D | DVA8 |
| D | NA1010 |
| D | HOH2007 |
| D | HOH2008 |
| D | HOH2009 |
| D | HOH2011 |
| site_id | AC8 |
| Number of Residues | 1 |
| Details | BINDING SITE FOR RESIDUE IOD C 1024 |
| site_id | AC9 |
| Number of Residues | 11 |
| Details | BINDING SITE FOR RESIDUE NA D 1010 |
| Chain | Residue |
| C | DLE10 |
| C | DLE12 |
| C | NA1011 |
| C | HOH2007 |
| D | DLE4 |
| D | ALA5 |
| D | DVA6 |
| D | HOH2003 |
| D | HOH2004 |
| D | HOH2007 |
| D | HOH2008 |
| site_id | BC1 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE IOD D 1022 |
| Chain | Residue |
| B | ETA16 |
| D | TRP13 |
| D | TRP15 |
| D | IOD1023 |
| site_id | BC2 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE IOD D 1023 |
| Chain | Residue |
| B | ETA16 |
| B | HOH2014 |
| D | IOD1022 |
| site_id | BC3 |
| Number of Residues | 42 |
| Details | BINDING SITE FOR CHAIN A OF GRAMICIDIN D |
| Chain | Residue |
| C | TRP15 |
| C | TRP15 |
| C | ETA16 |
| D | VAL7 |
| D | TRP9 |
| D | DLE10 |
| D | PHE11 |
| D | TRP13 |
| D | TRP15 |
| A | NA1001 |
| A | IOD1021 |
| A | IOD1025 |
| A | IOD1025 |
| A | HOH2001 |
| A | HOH2003 |
| A | HOH2004 |
| B | GLY2 |
| B | GLY2 |
| B | ALA3 |
| B | ALA3 |
| B | DLE4 |
| B | ALA5 |
| B | DVA6 |
| B | VAL7 |
| B | DVA8 |
| B | TRP9 |
| B | DLE10 |
| B | PHE11 |
| B | DLE12 |
| B | TRP13 |
| B | DLE14 |
| B | TRP15 |
| B | ETA16 |
| B | NA1000 |
| B | HOH2012 |
| C | ALA3 |
| C | DLE4 |
| C | TRP9 |
| C | TRP11 |
| C | DLE12 |
| C | TRP13 |
| C | DLE14 |
| site_id | BC4 |
| Number of Residues | 53 |
| Details | BINDING SITE FOR CHAIN B OF GRAMICIDIN D |
| Chain | Residue |
| A | GLY2 |
| A | GLY2 |
| A | ALA3 |
| A | ALA3 |
| A | DLE4 |
| A | ALA5 |
| A | DVA6 |
| A | VAL7 |
| A | DVA8 |
| A | TRP9 |
| A | DLE10 |
| A | TRP11 |
| A | DLE12 |
| A | TRP13 |
| A | DLE14 |
| A | TRP15 |
| A | ETA16 |
| A | NA1001 |
| A | IOD1020 |
| A | HOH2002 |
| B | NA1000 |
| B | IOD1026 |
| B | IOD1026 |
| B | HOH2001 |
| B | HOH2003 |
| B | HOH2004 |
| B | HOH2005 |
| B | HOH2006 |
| B | HOH2007 |
| B | HOH2008 |
| B | HOH2009 |
| B | HOH2010 |
| B | HOH2012 |
| B | HOH2013 |
| B | HOH2014 |
| C | DLE4 |
| C | ALA5 |
| C | DVA6 |
| C | TRP11 |
| C | TRP13 |
| C | ETA16 |
| D | DVA6 |
| D | TRP9 |
| D | TRP9 |
| D | DLE10 |
| D | PHE11 |
| D | PHE11 |
| D | DLE12 |
| D | TRP13 |
| D | DLE14 |
| D | TRP15 |
| D | IOD1022 |
| D | IOD1023 |
| site_id | BC5 |
| Number of Residues | 46 |
| Details | BINDING SITE FOR CHAIN C OF GRAMICIDIN D |
| Chain | Residue |
| A | DLE4 |
| A | TRP9 |
| A | TRP11 |
| A | DLE12 |
| A | TRP13 |
| A | DLE14 |
| A | TRP15 |
| A | TRP15 |
| A | ETA16 |
| A | IOD1020 |
| A | IOD1025 |
| B | DLE4 |
| B | DVA6 |
| B | TRP9 |
| B | DLE10 |
| B | PHE11 |
| B | DLE12 |
| B | TRP13 |
| B | DLE14 |
| C | NA1011 |
| C | HOH2001 |
| C | HOH2002 |
| C | HOH2003 |
| C | HOH2005 |
| C | HOH2006 |
| C | HOH2007 |
| C | HOH2009 |
| D | GLY2 |
| D | GLY2 |
| D | ALA3 |
| D | ALA3 |
| D | DLE4 |
| D | ALA5 |
| D | DVA6 |
| D | VAL7 |
| D | DVA8 |
| D | TRP9 |
| D | TRP9 |
| D | DLE10 |
| D | PHE11 |
| D | DLE12 |
| D | TRP13 |
| D | DLE14 |
| D | TRP15 |
| D | ETA16 |
| D | NA1010 |
| site_id | BC6 |
| Number of Residues | 50 |
| Details | BINDING SITE FOR CHAIN D OF GRAMICIDIN D |
| Chain | Residue |
| A | DVA6 |
| A | DVA6 |
| A | VAL7 |
| A | TRP11 |
| A | TRP13 |
| A | DLE14 |
| A | IOD1025 |
| B | DVA6 |
| B | VAL7 |
| B | PHE11 |
| B | PHE11 |
| B | DLE12 |
| B | TRP13 |
| B | DLE14 |
| B | TRP15 |
| B | ETA16 |
| C | GLY2 |
| C | GLY2 |
| C | ALA3 |
| C | ALA3 |
| C | DLE4 |
| C | DLE4 |
| C | ALA5 |
| C | DVA6 |
| C | VAL7 |
| C | DVA8 |
| C | TRP9 |
| C | DLE10 |
| C | TRP11 |
| C | DLE12 |
| C | TRP13 |
| C | DLE14 |
| C | TRP15 |
| C | TRP15 |
| C | ETA16 |
| C | NA1011 |
| C | HOH2001 |
| C | HOH2003 |
| C | HOH2009 |
| D | NA1010 |
| D | IOD1022 |
| D | IOD1022 |
| D | HOH2001 |
| D | HOH2003 |
| D | HOH2004 |
| D | HOH2006 |
| D | HOH2007 |
| D | HOH2008 |
| D | HOH2011 |
| D | HOH2014 |