User:Noam Gonen/Avidin

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(Undo revision 2348624 by Noam Gonen (Talk))
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'''Interaction 1-2'''
'''Interaction 1-2'''
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Monomers are linked by hydrogen bond interactions between the respective N-terminal portions of β8-strands of each monomer. The β8-strands form a short antiparallel β-sheet. Each monomer contributes Trp-110 to its partner as an additional and very significant component of the biotin-binding site. When biotin is bound, interaction 1-2 is enhanced greatly, owing to the Trp-110-biotin interaction. The buried surface area of interaction is〖729Å〗^2.
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Monomers are linked by hydrogen bond interactions between the respective N-terminal portions of β8-strands of each monomer. The β8-strands form a short antiparallel β-sheet. Each monomer contributes Trp-110 to its partner as an additional and very significant component of the biotin-binding site. When biotin is bound, interaction 1-2 is enhanced greatly, owing to the Trp-110-biotin interaction. The buried surface area of interaction is〖729Å〗^2.
'''Interaction 1-3'''
'''Interaction 1-3'''
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'''Hydrophobic residues in the binding site of avidin'''
'''Hydrophobic residues in the binding site of avidin'''
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These include Trp-70, Phe-72, Phe-79, and Trp-97 from one monomer, and Trp-110 (dashed lines), which is provided by the adjacent symmetry-related monomer.
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These include Trp-70, Phe-72, Phe-79, and Trp-97 from one monomer, and Trp-110 (dashed lines), which is provided by the adjacent symmetry-related monomer.
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'''Hydrophilic interactions in the binding site of avidin'''
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== Structural highlights ==
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Ureido oxygen of the biotin molecule forms three hydrogen bonds with the side chains of Asn-12, Ser-16, and Tyr-33 of avidin forming a tetrahedral oxyanion. In addition, each of the two ureido nitrogens participates in a single hydrogen-bond interaction with Thr-35 and Asn-118. The biotin sulfur may interact with Thr-77.
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This is a sample scene created with SAT to <scene name="/12/3456/Sample/1">color</scene> by Group, and another to make <scene name="/12/3456/Sample/2">a transparent representation</scene> of the protein. You can make your own scenes on SAT starting from scratch or loading and editing one of these sample scenes.
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</StructureSection>
== References ==
== References ==
<references/>
<references/>

Revision as of 16:15, 17 January 2015

INTRODUCTION

Avidin is a tetrameric or dimeric[1] biotin-binding protein produced in the oviducts of birds, reptiles and amphibians and deposited in the whites of their eggs.

Caption for this structure

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References

Proteopedia Page Contributors and Editors (what is this?)

Noam Gonen

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