"Helix-Turn-Helix Motifs" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, 
	MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, 
	which enables searching at various levels of specificity.
	
	
		
			
			
				The first DNA-binding protein motif to be recognized. Helix-turn-helix motifs were originally identified in bacterial proteins but have since been found in hundreds of DNA-BINDING PROTEINS from both eukaryotes and prokaryotes. They are constructed from two alpha helices connected by a short extended chain of amino acids, which constitute the "turn." The two helices are held at a fixed angle, primarily through interactions between the two helices. (From Alberts et al., Molecular Biology of the Cell, 3d ed, p408-9)
    
			
			
				
				
					
						| Descriptor ID | D019077 | 
					
						| MeSH Number(s) | G02.111.570.820.709.275.500.360.360 | 
					
						| Concept/Terms | Helix-Turn-Helix MotifsHelix-Turn-Helix MotifsHelix Turn Helix MotifsHelix-Turn-Helix MotifMotif, Helix-Turn-HelixMotifs, Helix-Turn-HelixMotifs, Helix Turn HelixHTH MotifsHTH MotifMotif, HTHMotifs, HTH
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				Below are MeSH descriptors whose meaning is more general than "Helix-Turn-Helix Motifs".
				
			 
			
			
				Below are MeSH descriptors whose meaning is more specific than "Helix-Turn-Helix Motifs".
				
			 
		 
	 
 
                                        
                                            
	
	
		
			
			
					
				This graph shows the total number of publications written about "Helix-Turn-Helix Motifs" by people in this website by year, and whether "Helix-Turn-Helix Motifs" was a major or minor topic of these publications. 
				
					 
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		            | Year | Major Topic | Minor Topic | Total | 
|---|
| 2012 | 0 | 1 | 1 | 
| 2015 | 0 | 1 | 1 | 
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				Below are the most recent publications written about "Helix-Turn-Helix Motifs" by people in Profiles.
						
					
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								Ma Y, Keil V, Sun J. Characterization of Mycobacterium tuberculosis EsxA membrane insertion: roles of N- and C-terminal flexible arms and central helix-turn-helix motif. J Biol Chem. 2015 Mar 13; 290(11):7314-22. 
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								Eletsky A, Petrey D, Zhang QC, Lee HW, Acton TB, Xiao R, Everett JK, Prestegard JH, Honig B, Montelione GT, Szyperski T. Solution NMR structures reveal unique homodimer formation by a winged helix-turn-helix motif and provide first structures for protein domain family PF10771. J Struct Funct Genomics. 2012 Mar; 13(1):1-7.