CATH Classification
| Level | CATH Code | Description | 
|---|---|---|
 
	 | 
    2 | Mainly Beta | 
 
	 | 
    2.40 | Beta Barrel | 
 
	 | 
    2.40.128 | Lipocalin | 
 
	 | 
    2.40.128.30 | Avidin-like | 
Domain Context
CATH Clusters
| Superfamily | Avidin-like | 
| Functional Family | 
Enzyme Information
UniProtKB Entries (1)
| P22629 | 
						 SAV_STRAV 
						Streptomyces avidinii 
						Streptavidin 
					 | 
				
PDB Structure
| PDB | 1KL5 | 
| External Links | |
| Method | X-RAY DIFFRACTION | 
| Organism | Escherichia | 
| Primary Citation | 
					 Improved affinity of engineered streptavidin for the Strep-tag II peptide is due to a fixed open conformation of the lid-like loop at the binding site. 
					    
					    Protein Sci. 
					    
					 | 
			
