4IUN
Crystal structure of Staphylococcal nuclease variant Delta+PHS R126E at cryogenic temperature
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | Thermonuclease | polymer | 143 | 16115.4 | 1 | UniProt (P00644) Pfam (PF00565) In PDB | Staphylococcus aureus | TNase, Micrococcal nuclease, Staphylococcal nuclease |
| 2 | A | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 3 | A | THYMIDINE-3',5'-DIPHOSPHATE | non-polymer | 402.2 | 1 | Chemie (THP) | |||
| 4 | A | PHOSPHATE ION | non-polymer | 95.0 | 1 | Chemie (PO4) | |||
| 5 | A | (4S)-2-METHYL-2,4-PENTANEDIOL | non-polymer | 118.2 | 1 | Chemie (MPD) | |||
| 6 | water | water | 18.0 | 138 | Chemie (HOH) |
Sequence modifications
A: 1 - 149 (UniProt: P00644)
| PDB | External Database | Details |
|---|---|---|
| - | Thr 126 | deletion |
| - | Lys 127 | deletion |
| - | His 128 | deletion |
| - | Pro 129 | deletion |
| - | Lys 130 | deletion |
| - | Lys 131 | deletion |
| Phe 50 | Gly 132 | engineered mutation |
| Asn 51 | Val 133 | engineered mutation |
| Gly 117 | Pro 199 | engineered mutation |
| Leu 124 | His 206 | engineered mutation |
| Glu 126 | Arg 208 | engineered mutation |
| Ala 128 | Ser 210 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 16115.4 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 655.4 | |
| All* | Total formula weight | 16770.8 |
