1f7k

<table><tr><td colspan='2'>[[1f7k]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Fiv Fiv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F7K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1F7K FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=UMP:2-DEOXYURIDINE+5-MONOPHOSPHATE'>UMP</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1f7d|1f7d]], [[1f7n|1f7n]], [[1f7o|1f7o]], [[1f7p|1f7p]], [[1f7q|1f7q]], [[1f7r|1f7r]]</div></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/dUTP_diphosphatase dUTP diphosphatase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.1.23 3.6.1.23] </span></td></tr>

[[https://www.uniprot.org/uniprot/POL_FIVPE POL_FIVPE]] During replicative cycle of retroviruses, the reverse-transcribed viral DNA is integrated into the host chromosome by the viral integrase enzyme. RNase H activity is associated with the reverse transcriptase.

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== Publication Abstract from PubMed ==

dUTP pyrophosphatase (dUTPase) cleaves the alpha-beta phosphodiester of dUTP to form pyrophosphate and dUMP, preventing incorporation of uracil into DNA and providing the substrate for thymine synthesis. Seven crystal structures of feline immunodeficiency virus (FIV) dUTPase in three crystal forms have been determined, including complexes with substrate (dUTP), product (dUMP) or inhibitor (dUDP) bound. The native enzyme has been refined at 1.40 A resolution in a hexagonal crystal form and at 2.3 A resolution in an orthorhombic crystal form. In the dUDP complex in a cubic crystal form refined at 2.5 A resolution, the C-terminal conserved P-loop motif is fully ordered. The analysis defines the roles of five sequence motifs in interaction with uracil, deoxyribose and the alpha-, beta- and gamma-phosphates. The enzyme utilizes adaptive recognition to bind the alpha- and beta-phosphates. In particular, the alpha-beta phosphodiester adopts an unfavorable eclipsed conformation in the presence of the P-loop. This conformation may be relevant to the mechanism of alpha-beta phosphodiester bond cleavage.

Structures of feline immunodeficiency virus dUTP pyrophosphatase and its nucleotide complexes in three crystal forms.,Prasad GS, Stura EA, Elder JH, Stout CD Acta Crystallogr D Biol Crystallogr. 2000 Sep;56(Pt 9):1100-9. PMID:10957629<ref>PMID:10957629</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Fiv]]

[[Category: Elder, J H]]

[[Category: Prasad, G S]]

[[Category: Stout, C D]]

[[Category: Stura, E A]]

[[Category: Viral protein]]