Protocol to request
            
                Steric exclusions in the conformational cycle of the porter domain
                
                
            
        
        
            
                Research article
            
            
                Coupling of remote alternating-access transport mechanisms for protons and substrates in the multidrug efflux pump AcrB
                
            
            
            
                Thomas Eicher et al.
            
            
                DOI: 10.7554/eLife.03145