1hys

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[[Image:1hys.gif|left|200px]]<br /><applet load="1hys" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1hys.gif|left|200px]]
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caption="1hys, resolution 3.0&Aring;" />
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'''CRYSTAL STRUCTURE OF HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH A POLYPURINE TRACT RNA:DNA'''<br />
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{{Structure
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|PDB= 1hys |SIZE=350|CAPTION= <scene name='initialview01'>1hys</scene>, resolution 3.0&Aring;
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|SITE=
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|LIGAND=
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|ACTIVITY= [http://en.wikipedia.org/wiki/RNA-directed_DNA_polymerase RNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.49 2.7.7.49]
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|GENE= POL ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11676 Human immunodeficiency virus 1])
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}}
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'''CRYSTAL STRUCTURE OF HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH A POLYPURINE TRACT RNA:DNA'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1HYS is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1] and [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Active as [http://en.wikipedia.org/wiki/RNA-directed_DNA_polymerase RNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.49 2.7.7.49] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HYS OCA].
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1HYS is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1] and [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HYS OCA].
==Reference==
==Reference==
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Crystal structure of HIV-1 reverse transcriptase in complex with a polypurine tract RNA:DNA., Sarafianos SG, Das K, Tantillo C, Clark AD Jr, Ding J, Whitcomb JM, Boyer PL, Hughes SH, Arnold E, EMBO J. 2001 Mar 15;20(6):1449-61. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11250910 11250910]
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Crystal structure of HIV-1 reverse transcriptase in complex with a polypurine tract RNA:DNA., Sarafianos SG, Das K, Tantillo C, Clark AD Jr, Ding J, Whitcomb JM, Boyer PL, Hughes SH, Arnold E, EMBO J. 2001 Mar 15;20(6):1449-61. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11250910 11250910]
[[Category: Human immunodeficiency virus 1]]
[[Category: Human immunodeficiency virus 1]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
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[[Category: unpaired base]]
[[Category: unpaired base]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:06:17 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:43:15 2008''

Revision as of 09:43, 20 March 2008

Image:1hys.gif


PDB ID 1hys

Drag the structure with the mouse to rotate
, resolution 3.0Å
Gene: POL (Human immunodeficiency virus 1)
Activity: RNA-directed DNA polymerase, with EC number 2.7.7.49
Coordinates: save as pdb, mmCIF, xml



CRYSTAL STRUCTURE OF HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH A POLYPURINE TRACT RNA:DNA


Overview

We have determined the 3.0 A resolution structure of wild-type HIV-1 reverse transcriptase in complex with an RNA:DNA oligonucleotide whose sequence includes a purine-rich segment from the HIV-1 genome called the polypurine tract (PPT). The PPT is resistant to ribonuclease H (RNase H) cleavage and is used as a primer for second DNA strand synthesis. The 'RNase H primer grip', consisting of amino acids that interact with the DNA primer strand, may contribute to RNase H catalysis and cleavage specificity. Cleavage specificity is also controlled by the width of the minor groove and the trajectory of the RNA:DNA, both of which are sequence dependent. An unusual 'unzipping' of 7 bp occurs in the adenine stretch of the PPT: an unpaired base on the template strand takes the base pairing out of register and then, following two offset base pairs, an unpaired base on the primer strand re-establishes the normal register. The structural aberration extends to the RNase H active site and may play a role in the resistance of PPT to RNase H cleavage.

About this Structure

1HYS is a Protein complex structure of sequences from Human immunodeficiency virus 1 and Mus musculus. Full crystallographic information is available from OCA.

Reference

Crystal structure of HIV-1 reverse transcriptase in complex with a polypurine tract RNA:DNA., Sarafianos SG, Das K, Tantillo C, Clark AD Jr, Ding J, Whitcomb JM, Boyer PL, Hughes SH, Arnold E, EMBO J. 2001 Mar 15;20(6):1449-61. PMID:11250910

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