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 | 17 | 
| Details | BINDING SITE FOR RESIDUE HEM A 500 | 
| Chain | Residue | 
| A | TRP180 | 
| A | PHE475 | 
| A | TYR477 | 
| A | H2B600 | 
| A | HW9800 | 
| A | HOH2146 | 
| A | HOH2206 | 
| A | HOH2207 | 
| A | HOH2208 | 
| A | ARG185 | 
| A | CYS186 | 
| A | SER228 | 
| A | PHE355 | 
| A | SER356 | 
| A | TRP358 | 
| A | GLU363 | 
| A | TRP449 | 
| site_id | AC2 | 
| Number of Residues | 14 | 
| Details | BINDING SITE FOR RESIDUE H2B A 600 | 
| Chain | Residue | 
| A | SER104 | 
| A | ARG367 | 
| A | ALA448 | 
| A | TRP449 | 
| A | HEM500 | 
| A | HOH2031 | 
| A | HOH2151 | 
| A | HOH2191 | 
| A | HOH2207 | 
| B | TRP447 | 
| B | PHE462 | 
| B | HIS463 | 
| B | GLN464 | 
| B | GLU465 | 
| site_id | AC3 | 
| Number of Residues | 10 | 
| Details | BINDING SITE FOR RESIDUE HW9 A 800 | 
| Chain | Residue | 
| A | PRO336 | 
| A | VAL338 | 
| A | ASN340 | 
| A | MET341 | 
| A | GLY357 | 
| A | TRP358 | 
| A | GLU363 | 
| A | TYR477 | 
| A | HEM500 | 
| A | HOH2207 | 
| site_id | AC4 | 
| Number of Residues | 4 | 
| Details | BINDING SITE FOR RESIDUE ACT A 860 | 
| Chain | Residue | 
| A | GLY188 | 
| A | TRP358 | 
| A | SER428 | 
| A | HOH2209 | 
| site_id | AC5 | 
| Number of Residues | 5 | 
| Details | BINDING SITE FOR RESIDUE ACT A 861 | 
| Chain | Residue | 
| A | ARG252 | 
| A | ASN368 | 
| A | ARG374 | 
| A | HOH2103 | 
| A | HOH2157 | 
| site_id | AC6 | 
| Number of Residues | 18 | 
| Details | BINDING SITE FOR RESIDUE HEM B 500 | 
| Chain | Residue | 
| B | TRP180 | 
| B | ARG185 | 
| B | CYS186 | 
| B | VAL187 | 
| B | GLY188 | 
| B | SER228 | 
| B | PHE355 | 
| B | SER356 | 
| B | TRP358 | 
| B | GLU363 | 
| B | TRP449 | 
| B | TYR477 | 
| B | H2B600 | 
| B | HW9800 | 
| B | HOH2112 | 
| B | HOH2148 | 
| B | HOH2151 | 
| B | HOH2152 | 
| site_id | AC7 | 
| Number of Residues | 13 | 
| Details | BINDING SITE FOR RESIDUE H2B B 600 | 
| Chain | Residue | 
| A | TRP447 | 
| A | PHE462 | 
| A | HOH2197 | 
| B | SER104 | 
| B | ARG367 | 
| B | ALA448 | 
| B | TRP449 | 
| B | HEM500 | 
| B | HW9800 | 
| B | HOH2018 | 
| B | HOH2113 | 
| B | HOH2140 | 
| B | HOH2151 | 
| site_id | AC8 | 
| Number of Residues | 12 | 
| Details | BINDING SITE FOR RESIDUE HW9 B 800 | 
| Chain | Residue | 
| B | PRO336 | 
| B | VAL338 | 
| B | ASN340 | 
| B | MET341 | 
| B | GLY357 | 
| B | TRP358 | 
| B | GLU363 | 
| B | TYR477 | 
| B | HEM500 | 
| B | H2B600 | 
| B | HOH2151 | 
| B | HOH2153 | 
| site_id | AC9 | 
| Number of Residues | 4 | 
| Details | BINDING SITE FOR RESIDUE ACT B 860 | 
| Chain | Residue | 
| B | TRP358 | 
| B | VAL420 | 
| B | SER428 | 
| B | HOH2047 | 
| site_id | BC1 | 
| Number of Residues | 4 | 
| Details | BINDING SITE FOR RESIDUE ACT B 861 | 
| Chain | Residue | 
| B | ARG374 | 
| B | HOH2081 | 
| B | ARG252 | 
| B | ASN368 | 
| site_id | BC2 | 
| Number of Residues | 4 | 
| Details | BINDING SITE FOR RESIDUE ZN B 900 | 
| Chain | Residue | 
| A | CYS96 | 
| A | CYS101 | 
| B | CYS96 | 
| B | CYS101 | 
Functional Information from PROSITE/UniProt
| site_id | PS60001 | 
| Number of Residues | 8 | 
| Details | NOS Nitric oxide synthase (NOS) signature. RCVGRIqW | 
| Chain | Residue | Details | 
| A | ARG185-TRP192 |  | 
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 | 
| Number of Residues | 4 | 
| Details | Binding site: {"evidences":[{"source":"UniProtKB","id":"P35228","evidenceCode":"ECO:0000250"}]} | 
| site_id | SWS_FT_FI2 | 
| Number of Residues | 20 | 
| Details | Binding site: {"evidences":[{"source":"UniProtKB","id":"P29474","evidenceCode":"ECO:0000250"}]} | 
| site_id | SWS_FT_FI3 | 
| Number of Residues | 2 | 
| Details | Binding site: {"description":"axial binding residue","evidences":[{"source":"UniProtKB","id":"P29474","evidenceCode":"ECO:0000250"}]} |