1csj: Difference between revisions
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New page: left|200px<br /><applet load="1csj" size="450" color="white" frame="true" align="right" spinBox="true" caption="1csj, resolution 2.8Å" /> '''CRYSTAL STRUCTURE OF ... |
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[[Image:1csj.gif|left|200px]]<br /><applet load="1csj" size=" | [[Image:1csj.gif|left|200px]]<br /><applet load="1csj" size="350" color="white" frame="true" align="right" spinBox="true" | ||
caption="1csj, resolution 2.8Å" /> | caption="1csj, resolution 2.8Å" /> | ||
'''CRYSTAL STRUCTURE OF THE RNA-DEPENDENT RNA POLYMERASE OF HEPATITIS C VIRUS'''<br /> | '''CRYSTAL STRUCTURE OF THE RNA-DEPENDENT RNA POLYMERASE OF HEPATITIS C VIRUS'''<br /> | ||
==Overview== | ==Overview== | ||
We report the crystal structure of the RNA-dependent RNA polymerase of | We report the crystal structure of the RNA-dependent RNA polymerase of hepatitis C virus, a major human pathogen, to 2.8-A resolution. This enzyme is a key target for developing specific antiviral therapy. The structure of the catalytic domain contains 531 residues folded in the characteristic fingers, palm, and thumb subdomains. The fingers subdomain contains a region, the "fingertips," that shares the same fold with reverse transcriptases. Superposition to the available structures of the latter shows that residues from the palm and fingertips are structurally equivalent. In addition, it shows that the hepatitis C virus polymerase was crystallized in a closed fingers conformation, similar to HIV-1 reverse transcriptase in ternary complex with DNA and dTTP [Huang H., Chopra, R., Verdine, G. L. & Harrison, S. C. (1998) Science 282, 1669-1675]. This superposition reveals the majority of the amino acid residues of the hepatitis C virus enzyme that are likely to be implicated in binding to the replicating RNA molecule and to the incoming NTP. It also suggests a rearrangement of the thumb domain as well as a possible concerted movement of thumb and fingertips during translocation of the RNA template-primer in successive polymerization rounds. | ||
==About this Structure== | ==About this Structure== | ||
1CSJ is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Hepatitis_c_virus Hepatitis c virus]. Active as [http://en.wikipedia.org/wiki/RNA-directed_RNA_polymerase RNA-directed RNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.48 2.7.7.48] Full crystallographic information is available from [http:// | 1CSJ is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Hepatitis_c_virus Hepatitis c virus]. Active as [http://en.wikipedia.org/wiki/RNA-directed_RNA_polymerase RNA-directed RNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.48 2.7.7.48] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CSJ OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Bressanelli, S.]] | [[Category: Bressanelli, S.]] | ||
[[Category: Francesco, R | [[Category: Francesco, R De.]] | ||
[[Category: Incitti, I.]] | [[Category: Incitti, I.]] | ||
[[Category: Mathieu, M.]] | [[Category: Mathieu, M.]] | ||
[[Category: Rey, F | [[Category: Rey, F A.]] | ||
[[Category: Roussel, A.]] | [[Category: Roussel, A.]] | ||
[[Category: Tomei, L.]] | [[Category: Tomei, L.]] | ||
[[Category: Vitale, R | [[Category: Vitale, R L.]] | ||
[[Category: atp-binding]] | [[Category: atp-binding]] | ||
[[Category: coat protein]] | [[Category: coat protein]] | ||
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[[Category: transmembrane]] | [[Category: transmembrane]] | ||
''Page seeded by [http:// | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:09:15 2008'' | ||
