1KFF
An engineered streptavidin with improved affinity for the strep-tag II peptide: apo-SAM1
Entity
Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
1 | A, B, C, D | streptavidin | polymer | 127 | 13383.6 | 4 | UniProt (P22629) Pfam (PF01382) In PDB | Streptomyces avidinii | |
2 | water | water | 18.0 | 212 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 14 - 139 (UniProt: P22629)
PDB | External Database | Details |
---|---|---|
Met 13 | - | initiating methionine |
Val 44 | Glu 68 | engineered mutation |
Thr 45 | Ser 69 | engineered mutation |
Arg 47 | Val 71 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
Polymers | Number of chains | 4 |
Total formula weight | 53534.2 | |
All* | Total formula weight | 53534.2 |