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3iny

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Revision as of 19:03, 4 August 2016

Crystal structure of human purine nucleoside phosphorylase in complex with 7-deazaguanine

Structural highlights

3iny is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	1v41
Gene:	NP, PNP (HUMAN)
Activity:	Purine-nucleoside phosphorylase, with EC number 2.4.2.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[PNPH_HUMAN] Defects in PNP are the cause of purine nucleoside phosphorylase deficiency (PNPD) [MIM:613179]. It leads to a severe T-cell immunodeficiency with neurologic disorder in children.^[1] ^[2] ^[3]

Function

[PNPH_HUMAN] The purine nucleoside phosphorylases catalyze the phosphorolytic breakdown of the N-glycosidic bond in the beta-(deoxy)ribonucleoside molecules, with the formation of the corresponding free purine bases and pentose-1-phosphate.^[4]

Publication Abstract from PubMed

In humans, purine nucleoside phosphorylase (HsPNP) is responsible for degradation of deoxyguanosine, and genetic deficiency of this enzyme leads to profound T-cell mediated immunosuppression. HsPNP is a target for inhibitor development aiming at T-cell immune response modulation. Here we report the crystal structure of HsPNP in complex with 7-deazaguanine (HsPNP:7DG) at 2.75 A. Molecular dynamics simulations were employed to assess the structural features of HsPNP in both free form and in complex with 7DG. Our results show that some regions, responsible for entrance and exit of substrate, present a conformational variability, which is dissected by dynamics simulation analysis. Enzymatic assays were also carried out and revealed that 7-deazaguanine presents a lower inhibitory activity against HsPNP (K(i)=200 microM). The present structure may be employed in both structure-based design of PNP inhibitors and in development of specific empirical scoring functions.

Crystal structure and molecular dynamics studies of human purine nucleoside phosphorylase complexed with 7-deazaguanine.,Caceres RA, Timmers LF, Pauli I, Gava LM, Ducati RG, Basso LA, Santos DS, de Azevedo WF Jr J Struct Biol. 2010 Mar;169(3):379-88. Epub 2009 Nov 22. PMID:19932753^[5]

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

References

↑ Williams SR, Gekeler V, McIvor RS, Martin DW Jr. A human purine nucleoside phosphorylase deficiency caused by a single base change. J Biol Chem. 1987 Feb 15;262(5):2332-8. PMID:3029074
↑ Aust MR, Andrews LG, Barrett MJ, Norby-Slycord CJ, Markert ML. Molecular analysis of mutations in a patient with purine nucleoside phosphorylase deficiency. Am J Hum Genet. 1992 Oct;51(4):763-72. PMID:1384322
↑ Pannicke U, Tuchschmid P, Friedrich W, Bartram CR, Schwarz K. Two novel missense and frameshift mutations in exons 5 and 6 of the purine nucleoside phosphorylase (PNP) gene in a severe combined immunodeficiency (SCID) patient. Hum Genet. 1996 Dec;98(6):706-9. PMID:8931706
↑ Ealick SE, Rule SA, Carter DC, Greenhough TJ, Babu YS, Cook WJ, Habash J, Helliwell JR, Stoeckler JD, Parks RE Jr, et al.. Three-dimensional structure of human erythrocytic purine nucleoside phosphorylase at 3.2 A resolution. J Biol Chem. 1990 Jan 25;265(3):1812-20. PMID:2104852
↑ Caceres RA, Timmers LF, Pauli I, Gava LM, Ducati RG, Basso LA, Santos DS, de Azevedo WF Jr. Crystal structure and molecular dynamics studies of human purine nucleoside phosphorylase complexed with 7-deazaguanine. J Struct Biol. 2010 Mar;169(3):379-88. Epub 2009 Nov 22. PMID:19932753 doi:10.1016/j.jsb.2009.11.010

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3iny"

@@ Line 1: / Line 1: @@
 ==Crystal structure of human purine nucleoside phosphorylase in complex with 7-deazaguanine==
 <StructureSection load='3iny' size='340' side='right' caption='[[3iny]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3iny]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3INY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3INY FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3iny]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3INY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3INY FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=7DG:7-DEAZAGUANINE'>7DG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1v41|1v41]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NP, PNP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NP, PNP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Purine-nucleoside_phosphorylase Purine-nucleoside phosphorylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.1 2.4.2.1] </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=3iny FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3iny OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3iny RCSB], [http://www.ebi.ac.uk/pdbsum/3iny 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=3iny FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3iny OCA], [http://pdbe.org/3iny PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3iny RCSB], [http://www.ebi.ac.uk/pdbsum/3iny PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3iny ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 21: / Line 22: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3iny" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 28: / Line 30: @@
 __TOC__
 </StructureSection>
-[[Category: Homo sapiens]]
+[[Category: Human]]
 [[Category: Purine-nucleoside phosphorylase]]
 [[Category: Basso, L A]]

3iny

From Proteopedia

Revision as of 19:03, 4 August 2016

Crystal structure of human purine nucleoside phosphorylase in complex with 7-deazaguanine

Structural highlights

Disease

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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