3BIR
DISECTING HISTIDINE INTERACTIONS IN RIBONUCLEASE T1 BY ASN AND GLN SUBSTITUTIONS
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | RIBONUCLEASE T1 | polymer | 104 | 11070.6 | 1 | UniProt (P00651) Pfam (PF00545) | Aspergillus oryzae | RNASE T1 |
| 2 | B, C (A) | CALCIUM ION | non-polymer | 40.1 | 2 | Chemie (CA) | |||
| 3 | D (A) | GUANOSINE-2'-MONOPHOSPHATE | non-polymer | 363.2 | 1 | Chemie (2GP) | |||
| 4 | E (A) | water | water | 18.0 | 128 | Chemie (HOH) |
Sequence modifications
A: 1 - 104 (UniProt: P00651)
| PDB | External Database | Details |
|---|---|---|
| Lys 25 | Gln 51 | conflict |
| Asn 92 | His 118 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 11070.6 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 443.4 | |
| All* | Total formula weight | 11514.0 |
