2p3a: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:2p3a.gif|left|200px]] | [[Image:2p3a.gif|left|200px]] | ||
'''Crystal Structure of the multi-drug resistant mutant subtype B HIV protease complexed with TL-3 inhibitor''' | {{Structure | ||
|PDB= 2p3a |SIZE=350|CAPTION= <scene name='initialview01'>2p3a</scene>, resolution 1.750Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=3TL:BENZYL (2S,5S,8S,9R,10R,11S,14S,17S)-8,11-DIBENZYL-9,10-DIHYDROXY-5,14-DIISOPROPYL-3,6,13,16-TETRAOXO-4,7,12,15-TETRAAZAOCTADECANE-2,17-DIYLDICARBAMATE'>3TL</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/HIV-1_retropepsin HIV-1 retropepsin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.23.16 3.4.23.16] | |||
|GENE= pol ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11676 Human immunodeficiency virus 1]) | |||
}} | |||
'''Crystal Structure of the multi-drug resistant mutant subtype B HIV protease complexed with TL-3 inhibitor''' | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
2P3A is a [ | 2P3A is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2P3A OCA]. | ||
==Reference== | ==Reference== | ||
Structural characterization of B and non-B subtypes of HIV-protease: insights into the natural susceptibility to drug resistance development., Sanches M, Krauchenco S, Martins NH, Gustchina A, Wlodawer A, Polikarpov I, J Mol Biol. 2007 Jun 15;369(4):1029-40. Epub 2007 Mar 24. PMID:[http:// | Structural characterization of B and non-B subtypes of HIV-protease: insights into the natural susceptibility to drug resistance development., Sanches M, Krauchenco S, Martins NH, Gustchina A, Wlodawer A, Polikarpov I, J Mol Biol. 2007 Jun 15;369(4):1029-40. Epub 2007 Mar 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17467738 17467738] | ||
[[Category: HIV-1 retropepsin]] | [[Category: HIV-1 retropepsin]] | ||
[[Category: Human immunodeficiency virus 1]] | [[Category: Human immunodeficiency virus 1]] | ||
| Line 25: | Line 34: | ||
[[Category: tl-3 inhibitor]] | [[Category: tl-3 inhibitor]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 18:08:00 2008'' | ||
Revision as of 19:08, 20 March 2008
| |||||||
| , resolution 1.750Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | pol (Human immunodeficiency virus 1) | ||||||
| Activity: | HIV-1 retropepsin, with EC number 3.4.23.16 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of the multi-drug resistant mutant subtype B HIV protease complexed with TL-3 inhibitor
OverviewOverview
Although a majority of HIV-1 infections in Brazil are caused by the subtype B virus (also prevalent in the United States and Western Europe), viral subtypes F and C are also found very frequently. Genomic differences between the subtypes give rise to sequence variations in the encoded proteins, including the HIV-1 protease. The current anti-HIV drugs have been developed primarily against subtype B and the effects arising from the combination of drug-resistance mutations with the naturally existing polymorphisms in non-B HIV-1 subtypes are only beginning to be elucidated. To gain more insights into the structure and function of different variants of HIV proteases, we have determined a 2.1 A structure of the native subtype F HIV-1 protease (PR) in complex with the protease inhibitor TL-3. We have also solved crystal structures of two multi-drug resistant mutant HIV PRs in complex with TL-3, from subtype B (Bmut) carrying the primary mutations V82A and L90M, and from subtype F (Fmut) carrying the primary mutation V82A plus the secondary mutation M36I, at 1.75 A and 2.8 A resolution, respectively. The proteases Bmut, Fwt and Fmut exhibit sevenfold, threefold, and 54-fold resistance to TL-3, respectively. In addition, the structure of subtype B wild type HIV-PR in complex with TL-3 has been redetermined in space group P6(1), consistent with the other three structures. Our results show that the primary mutation V82A causes the known effect of collapsing the S1/S1' pockets that ultimately lead to the reduced inhibitory effect of TL-3. Our results further indicate that two naturally occurring polymorphic substitutions in subtype F and other non-B HIV proteases, M36I and L89M, may lead to early development of drug resistance in patients infected with non-B HIV subtypes.
About this StructureAbout this Structure
2P3A is a Protein complex structure of sequences from Human immunodeficiency virus 1. Full crystallographic information is available from OCA.
ReferenceReference
Structural characterization of B and non-B subtypes of HIV-protease: insights into the natural susceptibility to drug resistance development., Sanches M, Krauchenco S, Martins NH, Gustchina A, Wlodawer A, Polikarpov I, J Mol Biol. 2007 Jun 15;369(4):1029-40. Epub 2007 Mar 24. PMID:17467738
Page seeded by OCA on Thu Mar 20 18:08:00 2008