Asymmetric unit from PDB | Unit | Type | Name | Chain ID | Residues | Atoms | Hetatoms |
| 1 | Protein | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | A | 83 | 668 | 0 |
| 2 | Protein | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | B | 83 | 668 | 0 |
| 3 | Protein | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | C | 83 | 668 | 0 |
| 4 | Protein | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | D | 83 | 668 | 0 |
| 5 | Protein | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | E | 83 | 668 | 0 |
| 6 | Ligand | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | A | 1 | 0 | 1 |
| 7 | Ligand | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | B | 1 | 0 | 1 |
| 8 | Ligand | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | C | 1 | 0 | 1 |
| 9 | Ligand | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | D | 1 | 0 | 1 |
| 10 | Ligand | GTP CYCLOHYDROLASE I FEEDBACK REGULATORY PROTEIN | E | 1 | 0 | 1 |
| 11 | Water | | | 256 | 0 | 256 |
| total | | | | 676 | 3340 | 261 |
| Unit 1 | PRO1 TYR2 LEU3 LEU4 ILE5 SER6 THR7 GLN8 ILE9 ARG10 MET11 GLU12 VAL13 GLY14 PRO15 THR16 MET17 VAL18 GLY19 ASP20 GLU21 HIS22 SER23 ASP24 PRO25 GLU26 LEU27 MET28 GLN29 GLN30 LEU31 GLY32 ALA33 SER34 LYS35 ARG36 ARG37 VAL38 LEU39 GLY40 ASN41 ASN42 PHE43 TYR44 GLU45 TYR46 TYR47 VAL48 ASN49 ASP50 PRO51 PRO52 ARG53 ILE54 VAL55 LEU56 ASP57 LYS58 LEU59 GLU60 CYS61 ARG62 GLY63 PHE64 ARG65 VAL66 LEU67 SER68 MET69 THR70 GLY71 VAL72 GLY73 GLN74 THR75 LEU76 VAL77 TRP78 CYS79 LEU80 HIS81 LYS82 GLU83 |
| Unit 2 | PRO1 TYR2 LEU3 LEU4 ILE5 SER6 THR7 GLN8 ILE9 ARG10 MET11 GLU12 VAL13 GLY14 PRO15 THR16 MET17 VAL18 GLY19 ASP20 GLU21 HIS22 SER23 ASP24 PRO25 GLU26 LEU27 MET28 GLN29 GLN30 LEU31 GLY32 ALA33 SER34 LYS35 ARG36 ARG37 VAL38 LEU39 GLY40 ASN41 ASN42 PHE43 TYR44 GLU45 TYR46 TYR47 VAL48 ASN49 ASP50 PRO51 PRO52 ARG53 ILE54 VAL55 LEU56 ASP57 LYS58 LEU59 GLU60 CYS61 ARG62 GLY63 PHE64 ARG65 VAL66 LEU67 SER68 MET69 THR70 GLY71 VAL72 GLY73 GLN74 THR75 LEU76 VAL77 TRP78 CYS79 LEU80 HIS81 LYS82 GLU83 |
| Unit 3 | PRO1 TYR2 LEU3 LEU4 ILE5 SER6 THR7 GLN8 ILE9 ARG10 MET11 GLU12 VAL13 GLY14 PRO15 THR16 MET17 VAL18 GLY19 ASP20 GLU21 HIS22 SER23 ASP24 PRO25 GLU26 LEU27 MET28 GLN29 GLN30 LEU31 GLY32 ALA33 SER34 LYS35 ARG36 ARG37 VAL38 LEU39 GLY40 ASN41 ASN42 PHE43 TYR44 GLU45 TYR46 TYR47 VAL48 ASN49 ASP50 PRO51 PRO52 ARG53 ILE54 VAL55 LEU56 ASP57 LYS58 LEU59 GLU60 CYS61 ARG62 GLY63 PHE64 ARG65 VAL66 LEU67 SER68 MET69 THR70 GLY71 VAL72 GLY73 GLN74 THR75 LEU76 VAL77 TRP78 CYS79 LEU80 HIS81 LYS82 GLU83 |
| Unit 4 | PRO1 TYR2 LEU3 LEU4 ILE5 SER6 THR7 GLN8 ILE9 ARG10 MET11 GLU12 VAL13 GLY14 PRO15 THR16 MET17 VAL18 GLY19 ASP20 GLU21 HIS22 SER23 ASP24 PRO25 GLU26 LEU27 MET28 GLN29 GLN30 LEU31 GLY32 ALA33 SER34 LYS35 ARG36 ARG37 VAL38 LEU39 GLY40 ASN41 ASN42 PHE43 TYR44 GLU45 TYR46 TYR47 VAL48 ASN49 ASP50 PRO51 PRO52 ARG53 ILE54 VAL55 LEU56 ASP57 LYS58 LEU59 GLU60 CYS61 ARG62 GLY63 PHE64 ARG65 VAL66 LEU67 SER68 MET69 THR70 GLY71 VAL72 GLY73 GLN74 THR75 LEU76 VAL77 TRP78 CYS79 LEU80 HIS81 LYS82 GLU83 |
| Unit 5 | PRO1 TYR2 LEU3 LEU4 ILE5 SER6 THR7 GLN8 ILE9 ARG10 MET11 GLU12 VAL13 GLY14 PRO15 THR16 MET17 VAL18 GLY19 ASP20 GLU21 HIS22 SER23 ASP24 PRO25 GLU26 LEU27 MET28 GLN29 GLN30 LEU31 GLY32 ALA33 SER34 LYS35 ARG36 ARG37 VAL38 LEU39 GLY40 ASN41 ASN42 PHE43 TYR44 GLU45 TYR46 TYR47 VAL48 ASN49 ASP50 PRO51 PRO52 ARG53 ILE54 VAL55 LEU56 ASP57 LYS58 LEU59 GLU60 CYS61 ARG62 GLY63 PHE64 ARG65 VAL66 LEU67 SER68 MET69 THR70 GLY71 VAL72 GLY73 GLN74 THR75 LEU76 VAL77 TRP78 CYS79 LEU80 HIS81 LYS82 GLU83 |