1qb8: Difference between revisions

From Proteopedia
Jump to navigation Jump to search
← Older edit
No edit summary
No edit summary
 
Line 3: Line 3:
<StructureSection load='1qb8' size='340' side='right'caption='[[1qb8]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
<StructureSection load='1qb8' size='340' side='right'caption='[[1qb8]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1qb8]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Leido Leido]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QB8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QB8 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1qb8]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Leishmania_donovani Leishmania donovani]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QB8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QB8 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qb8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qb8 OCA], [https://pdbe.org/1qb8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qb8 RCSB], [https://www.ebi.ac.uk/pdbsum/1qb8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qb8 ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qb8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qb8 OCA], [https://pdbe.org/1qb8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qb8 RCSB], [https://www.ebi.ac.uk/pdbsum/1qb8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qb8 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q27679_LEIDO Q27679_LEIDO]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Line 17: Line 20:
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1qb8 ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1qb8 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The enzyme adenine phosphoribosyltransferase (APRT) functions to salvage adenine by converting it to adenosine-5-monophosphate (AMP). APRT deficiency in humans is a well characterized inborn error of metabolism, and APRT may contribute to the indispensable nutritional role of purine salvage in protozoan parasites, all of which lack de novo purine biosynthesis. We determined crystal structures for APRT from Leishmania donovani in complex with the substrate adenine, the product AMP, and sulfate and citrate ions that appear to mimic the binding of phosphate moieties. Overall, these structures are very similar to each other, although the adenine and AMP complexes show different patterns of hydrogen-bonding to the base, and the active site pocket opens slightly to accommodate the larger AMP ligand. Whereas AMP adopts a single conformation, adenine binds in two mutually exclusive orientations: one orientation providing adenine-specific hydrogen bonds and the other apparently positioning adenine for the enzymatic reaction. The core of APRT is similar to that of other phosphoribosyltransferases, although the adenine-binding domain is quite different. A C-terminal extension, unique to Leishmania APRTs, extends an extensive dimer interface by wrapping around the partner molecule. The active site involves residues from both subunits of the dimer, indicating that dimerization is essential for catalysis.
Crystal structures of adenine phosphoribosyltransferase from Leishmania donovani.,Phillips CL, Ullman B, Brennan RG, Hill CP EMBO J. 1999 Jul 1;18(13):3533-45. PMID:10393170<ref>PMID:10393170</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1qb8" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Phosphoribosyltransferase 3D structures|Phosphoribosyltransferase 3D structures]]
*[[Phosphoribosyltransferase 3D structures|Phosphoribosyltransferase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Leido]]
[[Category: Leishmania donovani]]
[[Category: Hill, C P]]
[[Category: Hill CP]]
[[Category: Phillips, C L]]
[[Category: Phillips CL]]
[[Category: Dinucleotide binding fold]]
[[Category: Transferase]]

Latest revision as of 11:14, 14 February 2024

CRYSTAL STRUCTURES OF ADENINE PHOSPHORIBOSYLTRANSFERASE FROM LEISHMANIA DONOVANICRYSTAL STRUCTURES OF ADENINE PHOSPHORIBOSYLTRANSFERASE FROM LEISHMANIA DONOVANI

Structural highlights

1qb8 is a 1 chain structure with sequence from Leishmania donovani. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q27679_LEIDO

Evolutionary Conservation

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

See Also

1qb8, resolution 2.00Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA
Retrieved from "https://proteopedia.openfox.io/wiki/index.php?title=1qb8&oldid=4053751"