2A9R
RR02-Rec Phosphate in the active site
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords | 
| 1 | A (A)  | DNA-binding response regulator | polymer | 120 | 13680.7 | 1 | UniProt (Q9S1K0) Pfam (PF00072) UniProt (by SIFTS) (A0A0H2UQ68)  | Streptococcus pneumoniae | |
| 2 | B (A)  | MAGNESIUM ION | non-polymer | 24.3 | 1 | Chemie (MG) | |||
| 3 | C (A)  | XENON | non-polymer | 131.3 | 1 | Chemie (XE) | |||
| 4 | D (A)  | water | water | 18.0 | 16 | Chemie (HOH) | 
Sequence modifications
A: 1 - 120 (UniProt: Q9S1K0)
| PDB | External Database | Details | 
|---|---|---|
| Phd 52 | Asp 52 | modified residue | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 | 
| Total formula weight | 13680.7 | |
| Non-Polymers* | Number of molecules | 2 | 
| Total formula weight | 155.6 | |
| All* | Total formula weight | 13836.3 | 






