1ot3

From Proteopedia

(Difference between revisions)

Revision as of 07:28, 15 February 2018

Crystal structure of Drosophila deoxyribonucleotide kinase complexed with the substrate deoxythymidine

Structural highlights

1ot3 is a 8 chain structure with sequence from Drome. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Activity:	Deoxynucleoside kinase, with EC number 2.7.1.145
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[DNK_DROME] Deoxyribonucleoside kinase that has a broad specificity phosphorylating thymidine, deoxyadenosine, deoxycytidine and deoxyguanosine. Specificity is higher for pyrimidine nucleosides. Several anti-viral and anti-cancer nucleoside analogs are also efficiently phosphorylated.^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Deoxyribonucleoside kinases are feedback inhibited by the final products of the salvage pathway, the deoxyribonucleoside triphosphates. In the present study, the mechanism of feedback inhibition is presented based on the crystal structure of a complex between the fruit fly deoxyribonucleoside kinase and its feedback inhibitor deoxythymidine triphosphate. The inhibitor was found to be bound as a bisubstrate inhibitor with its nucleoside part in the nucleoside binding site and with its phosphate groups partially occupying the phosphate donor site. The overall structure of the enzyme--inhibitor complex is very similar to the enzyme--substrate complexes with deoxythymidine and deoxycytidine, except for a conformational change within a region otherwise directly involved in catalysis. This conformational change involves a magnesium ion, which is coordinated in the inhibitor complex to the phosphates and to the primary base, Glu52, that normally is positioned close to the 5'-OH of the substrate deoxyribose.

Structural basis for feedback inhibition of the deoxyribonucleoside salvage pathway: studies of the Drosophila deoxyribonucleoside kinase.,Mikkelsen NE, Johansson K, Karlsson A, Knecht W, Andersen G, Piskur J, Munch-Petersen B, Eklund H Biochemistry. 2003 May 20;42(19):5706-12. PMID:12741827^[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Johansson M, van Rompay AR, Degreve B, Balzarini J, Karlsson A. Cloning and characterization of the multisubstrate deoxyribonucleoside kinase of Drosophila melanogaster. J Biol Chem. 1999 Aug 20;274(34):23814-9. PMID:10446143
↑ Munch-Petersen B, Knecht W, Lenz C, Sondergaard L, Piskur J. Functional expression of a multisubstrate deoxyribonucleoside kinase from Drosophila melanogaster and its C-terminal deletion mutants. J Biol Chem. 2000 Mar 3;275(9):6673-9. PMID:10692477
↑ Welin M, Skovgaard T, Knecht W, Zhu C, Berenstein D, Munch-Petersen B, Piskur J, Eklund H. Structural basis for the changed substrate specificity of Drosophila melanogaster deoxyribonucleoside kinase mutant N64D. FEBS J. 2005 Jul;272(14):3733-42. PMID:16008571 doi:10.1111/j.1742-4658.2005.04803.x
↑ Mikkelsen NE, Johansson K, Karlsson A, Knecht W, Andersen G, Piskur J, Munch-Petersen B, Eklund H. Structural basis for feedback inhibition of the deoxyribonucleoside salvage pathway: studies of the Drosophila deoxyribonucleoside kinase. Biochemistry. 2003 May 20;42(19):5706-12. PMID:12741827 doi:http://dx.doi.org/10.1021/bi0340043

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1ot3"

@@ Line 1: / Line 1: @@
 ==Crystal structure of Drosophila deoxyribonucleotide kinase complexed with the substrate deoxythymidine==
 <StructureSection load='1ot3' size='340' side='right' caption='[[1ot3]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=THM:THYMIDINE'>THM</scene></td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Deoxynucleoside_kinase Deoxynucleoside kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.145 2.7.1.145] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ot3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ot3 OCA], [http://pdbe.org/1ot3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ot3 RCSB], [http://www.ebi.ac.uk/pdbsum/1ot3 PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ot3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ot3 OCA], [http://pdbe.org/1ot3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ot3 RCSB], [http://www.ebi.ac.uk/pdbsum/1ot3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ot3 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ot/1ot3_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ot/1ot3_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1ot3

From Proteopedia

Revision as of 07:28, 15 February 2018

Crystal structure of Drosophila deoxyribonucleotide kinase complexed with the substrate deoxythymidine

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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