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structure of xylose-binding transcription activator xylR
Annotation data related to this entry.
4FE7
  •   Protein Family Annotation: Pfam Classification   Hide
    Chain Pfam Accession Pfam Family Identifier Pfam Description Type Comment
    A PF13407   Peripla_BP_4 Periplasmic binding protein domain Family
    A PF00165   HTH_AraC Bacterial regulatory helix-turn-helix proteins, AraC family Domain In the absence of arabinose, the N-terminal arm of AraC binds to the DNA binding domain (Pfam:PF00165) and helps to hold the two DNA binding domains in a relative orientation that favours DNA looping. In the presence of arabinose, the arms bind over the arabinose on the dimerisation domain, thus freeing the DNA-binding domains. The freed DNA-binding domains are then able to assume a conformation suitable for binding to the adjacent DNA sites that are utilised when AraC activates transcription, and hence AraC ceases looping the DNA when arabinose is added [1-2]. Source: Pfam  
    A PF12833   HTH_18 Helix-turn-helix domain Domain Source: Pfam  
    A PF13377   Peripla_BP_3 Periplasmic binding protein-like domain Domain Thi domain is found in a variety of transcriptional regulatory proteins. It is related to bacterial periplasmic binding proteins, although this domain is unlikely to be found in the periplasm. This domain likely acts to bind a small molecule ligand that the DNA-binding domain responds to. Source: Pfam  
    A PF00165   HTH_AraC Bacterial regulatory helix-turn-helix proteins, AraC family Domain In the absence of arabinose, the N-terminal arm of AraC binds to the DNA binding domain (Pfam:PF00165) and helps to hold the two DNA binding domains in a relative orientation that favours DNA looping. In the presence of arabinose, the arms bind over the arabinose on the dimerisation domain, thus freeing the DNA-binding domains. The freed DNA-binding domains are then able to assume a conformation suitable for binding to the adjacent DNA sites that are utilised when AraC activates transcription, and hence AraC ceases looping the DNA when arabinose is added [1-2]. Source: Pfam  
     
  •   Gene Product Annotation: GO Terms   Hide
    Polymer Molecular Function Biological Process Cellular Component
    Xylose operon regulatory protein (4FE7:A)
    • none
     
  •   Structural Biology Knowledgebase Data Hide
     
 
Annotations in orange boxes have been gathered from external resources.