2f1t
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(New page: 200px<br /><applet load="2f1t" size="450" color="white" frame="true" align="right" spinBox="true" caption="2f1t, resolution 3.0Å" /> '''Outer membrane protei...)
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Revision as of 08:11, 21 November 2007
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Outer membrane protein OmpW
Overview
Escherichia coli OmpW belongs to a family of small outer membrane proteins, that are widespread in Gram-negative bacteria. Their functions are, unknown, but recent data suggest that they may be involved in the, protection of bacteria against various forms of environmental stress. To, gain insight into the function of these proteins A we have determined the, crystal structure of E. coli OmpW to 2.7-A resolution. The structure shows, that OmpW forms an 8-stranded beta-barrel with a long and narrow, hydrophobic channel that contains a bound, n-dodecyl-N,N-dimethylamine-N-oxide detergent molecule. Single channel, conductance experiments show that OmpW functions as an ion channel in, planar lipid bilayers. The channel activity can be blocked by the addition, of n-dodecyl-N,N-dimethylamine-N-oxide. Taken together, the data suggest, that members of the OmpW family could be involved in the transport of, small hydrophobic molecules across the bacterial outer membrane.
About this Structure
2F1T is a Single protein structure of sequence from Escherichia coli with LDA, C8E and GOL as ligands. Full crystallographic information is available from OCA.
Reference
The outer membrane protein OmpW forms an eight-stranded beta-barrel with a hydrophobic channel., Hong H, Patel DR, Tamm LK, van den Berg B, J Biol Chem. 2006 Mar 17;281(11):7568-77. Epub 2006 Jan 12. PMID:16414958
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