The dynamics of linear polyubiquitin.
    
    
        
    
    
        
        Sci. Adv. 6:eabc3786 (2020)
    
    
    
		
		
			
				Polyubiquitin chains are flexible multidomain proteins, whose conformational dynamics enable them to regulate multiple biological pathways. Their dynamic is determined by the linkage between ubiquitins and by the number of ubiquitin units. Characterizing polyubiquitin behavior as a function of their length is hampered because of increasing system size and conformational variability. Here, we introduce a new approach to efficiently integrating small- angle x-ray scattering with simulations allowing us to accurately characterize the dynamics of linear di-, tri-, and tetraubiquitin in the free state as well as of diubiquitin in complex with NEMO, a central regulator in the NF-kappa B pathway. Our results show that the behavior of the diubiquitin subunits is independent of the presence of additional ubiquitin modules and that the dynamics of polyubiquitins with different lengths follow a simple model. Together with experimental data from multiple biophysical techniques, we then rationalize the 2:1 NEMO:polyubiquitin binding.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Nf-kappa-b; Essential Modulator Nemo; Free-energy Landscapes; Bead Form-factors; Ubiquitin Chains; Protein; Recognition; Complex; Conformations; Contributes
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2020
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2020
    
 
    
    
        ISSN (print) / ISBN
        2375-2548
    
 
    
        e-ISSN
        2375-2548
    
 
    
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	    Band: 6,  
	    Heft: 42,  
	    Seiten: ,  
	    Artikelnummer: eabc3786 
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            American Association for the Advancement of Science (AAAS)
        
 
        
            Verlagsort
            Washington, DC [u.a.]
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30203 - Molecular Targets and Therapies
    
 
    
        Forschungsfeld(er)
        Enabling and Novel Technologies
    
 
    
        PSP-Element(e)
        G-503000-001
    
 
    
        Förderungen
        Gauss Centre for Supercomputing e.V.
Lundbeck Foundation
DFG
European Union Seventh Framework Programme
Technische Universitat Munchen-Institute for Advanced Study - German Excellence Initiative
    
 
    
        Copyright
        
    
 	
    
    
    
    
    
        Erfassungsdatum
        2020-11-13