Functional Information from GO Data
| Chain | GOid | namespace | contents | 
| A | 0004517 | molecular_function | nitric-oxide synthase activity | 
| A | 0006809 | biological_process | nitric oxide biosynthetic process | 
| B | 0004517 | molecular_function | nitric-oxide synthase activity | 
| B | 0006809 | biological_process | nitric oxide biosynthetic process | 
Functional Information from PDB Data
| site_id | AC1 | 
| Number of Residues | 18 | 
| Details | binding site for residue HEM A 801 | 
| Chain | Residue | 
| A | TRP414 | 
| A | TRP683 | 
| A | PHE709 | 
| A | TYR711 | 
| A | H4B802 | 
| A | OUM803 | 
| A | HOH920 | 
| A | HOH936 | 
| A | HOH984 | 
| A | HOH1009 | 
| A | CYS420 | 
| A | SER462 | 
| A | PHE589 | 
| A | SER590 | 
| A | GLY591 | 
| A | TRP592 | 
| A | MET594 | 
| A | GLU597 | 
| site_id | AC2 | 
| Number of Residues | 15 | 
| Details | binding site for residue H4B A 802 | 
| Chain | Residue | 
| A | SER339 | 
| A | MET341 | 
| A | ARG601 | 
| A | VAL682 | 
| A | TRP683 | 
| A | HEM801 | 
| A | HOH936 | 
| A | HOH1023 | 
| A | HOH1028 | 
| A | HOH1088 | 
| A | HOH1101 | 
| B | TRP681 | 
| B | PHE696 | 
| B | HIS697 | 
| B | GLN698 | 
| site_id | AC3 | 
| Number of Residues | 12 | 
| Details | binding site for residue OUM A 803 | 
| Chain | Residue | 
| A | GLN483 | 
| A | PRO570 | 
| A | VAL572 | 
| A | PHE589 | 
| A | TRP592 | 
| A | TYR593 | 
| A | GLU597 | 
| A | TRP683 | 
| A | HEM801 | 
| A | HOH936 | 
| A | HOH1020 | 
| A | HOH1251 | 
| site_id | AC4 | 
| Number of Residues | 4 | 
| Details | binding site for residue ZN B 801 | 
| Chain | Residue | 
| A | CYS331 | 
| A | CYS336 | 
| B | CYS331 | 
| B | CYS336 | 
| site_id | AC5 | 
| Number of Residues | 19 | 
| Details | binding site for residue HEM B 802 | 
| Chain | Residue | 
| B | TRP414 | 
| B | ARG419 | 
| B | CYS420 | 
| B | SER462 | 
| B | PHE589 | 
| B | SER590 | 
| B | GLY591 | 
| B | TRP592 | 
| B | MET594 | 
| B | GLU597 | 
| B | TRP683 | 
| B | PHE709 | 
| B | TYR711 | 
| B | H4B803 | 
| B | OUM804 | 
| B | HOH903 | 
| B | HOH927 | 
| B | HOH969 | 
| B | HOH1030 | 
| site_id | AC6 | 
| Number of Residues | 16 | 
| Details | binding site for residue H4B B 803 | 
| Chain | Residue | 
| A | TRP681 | 
| A | PHE696 | 
| A | HIS697 | 
| A | GLN698 | 
| A | GLU699 | 
| B | SER339 | 
| B | MET341 | 
| B | ARG601 | 
| B | VAL682 | 
| B | TRP683 | 
| B | HEM802 | 
| B | HOH927 | 
| B | HOH933 | 
| B | HOH998 | 
| B | HOH1038 | 
| B | HOH1040 | 
| site_id | AC7 | 
| Number of Residues | 11 | 
| Details | binding site for residue OUM B 804 | 
| Chain | Residue | 
| A | TRP311 | 
| B | GLN483 | 
| B | VAL572 | 
| B | PHE589 | 
| B | TRP592 | 
| B | TYR593 | 
| B | GLU597 | 
| B | HEM802 | 
| B | HOH913 | 
| B | HOH927 | 
| B | HOH1152 | 
Functional Information from PROSITE/UniProt
| site_id | PS60001 | 
| Number of Residues | 8 | 
| Details | NOS Nitric oxide synthase (NOS) signature. RCVGRIqW | 
| Chain | Residue | Details | 
| A | ARG419-TRP426 |  | 
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 | 
| Number of Residues | 18 | 
| Details | Binding site: {"evidences":[{"source":"PubMed","id":"25286850","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"4D1N","evidenceCode":"ECO:0007744"}]} | 
| site_id | SWS_FT_FI2 | 
| Number of Residues | 2 | 
| Details | Binding site: {"description":"axial binding residue","evidences":[{"source":"PubMed","id":"25286850","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"4D1N","evidenceCode":"ECO:0007744"}]} |