2gsk: Difference between revisions

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[[Image:2gsk.gif|left|200px]]
{{Seed}}
[[Image:2gsk.png|left|200px]]


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{{STRUCTURE_2gsk|  PDB=2gsk  |  SCENE=  }}  
{{STRUCTURE_2gsk|  PDB=2gsk  |  SCENE=  }}  


'''Structure of the BtuB:TonB Complex'''
===Structure of the BtuB:TonB Complex===




==Overview==
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In Gram-negative bacteria, the import of essential micronutrients across the outer membrane requires a transporter, an electrochemical gradient of protons across the inner membrane, and an inner membrane protein complex (ExbB, ExbD, TonB) that couples the proton-motive force to the outer membrane transporter. The inner membrane protein TonB binds directly to a conserved region, called the Ton-box, of the transporter. We solved the structure of the cobalamin transporter BtuB in complex with the C-terminal domain of TonB. In contrast to its conformations in the absence of TonB, the Ton-box forms a beta strand that is recruited to the existing beta sheet of TonB, which is consistent with a mechanical pulling model of transport.
The line below this paragraph, {{ABSTRACT_PUBMED_16741124}}, adds the Publication Abstract to the page
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{{ABSTRACT_PUBMED_16741124}}


==About this Structure==
==About this Structure==
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[[Category: Outer-membrane active transport]]
[[Category: Outer-membrane active transport]]
[[Category: Tonb]]
[[Category: Tonb]]
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