Molecular Playground/ClyA
From Proteopedia
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[[Image:ClyA-monomer2.png]] | [[Image:ClyA-monomer2.png]] | ||
| + | Figure 1. The soluble ClyA monomer. | ||
[[1QOY]] is a monomer from the dodecameric pore-forming toxin (PFT) from [http://en.wikipedia.org/wiki/Escherichia_coli ''Escherichia coli'']. It is a 34kDa protein comprised of four alpha helicies, a smaller fifth alpha helix, and a beta tongue. ClyA has been shown to form pores through a non-classical assembly pathway, excreted in oligomeric form in outer-membrane vesicles (OMV) as pre-pores. Only until ClyA reaches the target host membrane does it form the dodecameric PFT with hemolytic activity. | [[1QOY]] is a monomer from the dodecameric pore-forming toxin (PFT) from [http://en.wikipedia.org/wiki/Escherichia_coli ''Escherichia coli'']. It is a 34kDa protein comprised of four alpha helicies, a smaller fifth alpha helix, and a beta tongue. ClyA has been shown to form pores through a non-classical assembly pathway, excreted in oligomeric form in outer-membrane vesicles (OMV) as pre-pores. Only until ClyA reaches the target host membrane does it form the dodecameric PFT with hemolytic activity. | ||
Though its crystal structure,[[2WCD]] revealed a dodecamer, larger [http://pubs.acs.org/doi/abs/10.1021/ja4053398 pores] have been isolated, as well. | Though its crystal structure,[[2WCD]] revealed a dodecamer, larger [http://pubs.acs.org/doi/abs/10.1021/ja4053398 pores] have been isolated, as well. | ||
[[Image:ClyA.png]] [[Image:ClyA-protomer.png]] | [[Image:ClyA.png]] [[Image:ClyA-protomer.png]] | ||
| + | Figure 2. The dodecameric ClyA crystal structure rendered in PyMol (left), revealing the lumen of the pore. The protomer of ClyA is on the right. | ||
==Research on ClyA at UMass Amherst== | ==Research on ClyA at UMass Amherst== | ||
The Chen Lab, in collaboration with the Heuck lab, recently published a paper on [http://www.jbc.org/content/288/43/31042.short, ClyA] assembly. Currently, we are investigating the forces that influence polymer translocation through ClyA. | The Chen Lab, in collaboration with the Heuck lab, recently published a paper on [http://www.jbc.org/content/288/43/31042.short, ClyA] assembly. Currently, we are investigating the forces that influence polymer translocation through ClyA. | ||
Revision as of 10:36, 31 March 2014
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