4EQB
1.5 Angstrom Crystal Structure of Spermidine/Putrescine ABC Transporter Substrate-Binding Protein PotD from Streptococcus pneumoniae strain Canada MDR_19A in Complex with Calcium and HEPES
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) | Spermidine/putrescine ABC superfamily ATP binding cassette transporter, binding protein | polymer | 330 | 38148.8 | 2 | UniProt (D6ZS00) | Streptococcus pneumoniae TCH8431 | |
| 2 | C, D, E, F, J... (A, B) | CALCIUM ION | non-polymer | 40.1 | 8 | Chemie (CA) | |||
| 3 | G, N (A, B) | CHLORIDE ION | non-polymer | 35.5 | 2 | Chemie (CL) | |||
| 4 | H, O (A, B) | 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID | non-polymer | 238.3 | 2 | Chemie (EPE) | |||
| 5 | I (A) | DI(HYDROXYETHYL)ETHER | non-polymer | 106.1 | 1 | Chemie (PEG) | |||
| 6 | P, Q (A, B) | water | water | 18.0 | 969 | Chemie (HOH) |
Sequence modifications
A, B: 30 - 356 (UniProt: D6ZS00)
| PDB | External Database | Details |
|---|---|---|
| Ser 27 | - | expression tag |
| Asn 28 | - | expression tag |
| Ala 29 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 76297.6 | |
| Non-Polymers* | Number of molecules | 13 |
| Total formula weight | 974.3 | |
| All* | Total formula weight | 77271.8 |
