Protocol to request
            
                HpSP and HprSP cloning, expression and purification
                
                
            
        
        
            
                Research article
            
            
                Structural basis for ligand and innate immunity factor uptake by the trypanosome haptoglobin-haemoglobin receptor
                
            
            
            
                Harriet Lane-Serff et al.
            
            
                DOI: 10.7554/eLife.05553