2AAD
THE ROLE OF HISTIDINE-40 IN RIBONUCLEASE T1 CATALYSIS: THREE-DIMENSIONAL STRUCTURES OF THE PARTIALLY ACTIVE HIS40LYS MUTANT
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | RIBONUCLEASE T1 ISOZYME | polymer | 104 | 11085.7 | 2 | UniProt (P00651) Pfam (PF00545) | Aspergillus oryzae | |
| 2 | C, E (A, B) | CALCIUM ION | non-polymer | 40.1 | 2 | Chemie (CA) | |||
| 3 | D, F (A, B) | GUANOSINE-2'-MONOPHOSPHATE | non-polymer | 363.2 | 2 | Chemie (2GP) | |||
| 4 | G, H (A, B) | water | water | 18.0 | 239 | Chemie (HOH) |
Sequence modifications
A, B: 1 - 104 (UniProt: P00651)
| PDB | External Database | Details |
|---|---|---|
| Lys 25 | Gln 51 | conflict |
| Lys 40 | His 66 | conflict |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 22171.5 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 806.6 | |
| All* | Total formula weight | 22978.1 |
