4BX7
trans-divalent streptavidin bound to biotin-4-fluorescein
Entity
Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
1 | A | STREPTAVIDIN | polymer | 128 | 13321.4 | 1 | UniProt (P22629) Pfam (PF01382) In PDB | STREPTOMYCES AVIDINII | |
2 | B | STREPTAVIDIN | polymer | 133 | 14056.0 | 1 | UniProt (P22629) Pfam (PF01382) In PDB | STREPTOMYCES AVIDINII | |
3 | A | (4S)-2-METHYL-2,4-PENTANEDIOL | non-polymer | 118.2 | 1 | Chemie (MPD) | |||
4 | B | biotin-4-fluorescein | non-polymer | 644.7 | 1 | Chemie (B4F) | |||
5 | water | water | 18.0 | 78 | Chemie (HOH) |
Sequence modifications
A: 13 - 139 (UniProt: P22629)
B: 13 - 139 (UniProt: P22629)
PDB | External Database | Details |
---|---|---|
Ala 140 | - | expression tag |
Ala 23 | Asn 47 | engineered mutation |
Asp 27 | Ser 51 | engineered mutation |
Ala 45 | Ser 69 | engineered mutation |
PDB | External Database | Details |
---|---|---|
Glu 140 | - | expression tag |
Glu 141 | - | expression tag |
Glu 142 | - | expression tag |
Glu 143 | - | expression tag |
Glu 144 | - | expression tag |
Glu 145 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
Polymers | Number of chains | 2 |
Total formula weight | 27377.4 | |
Non-Polymers* | Number of molecules | 2 |
Total formula weight | 762.9 | |
All* | Total formula weight | 28140.3 |