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1qgx

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X-RAY STRUCTURE OF YEAST HAL2P

Structural highlights

1qgx is a 1 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.6Å
Ligands:	, , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

MET22_YEAST Converts adenosine 3'-phosphate 5'-phosphosulfate (PAPS) to adenosine 5'-phosphosulfate (APS) and 3'(2')-phosphoadenosine 5'- phosphate (PAP) to AMP. Regulates the flux of sulfur in the sulfur-activation pathway by converting PAPS to APS. Involved in salt tolerance. Confers resistance to lithium.

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

The product of the yeast HAL2 gene (Hal2p) is an in vivo target of sodium and lithium toxicity and its overexpression improves salt tolerance in yeast and plants. Hal2p is a metabolic phosphatase which catalyses the hydrolysis of 3'-phosphoadenosine-5'-phosphate (PAP) to AMP. It is, the prototype of an evolutionarily conserved family of PAP phosphatases and the engineering of sodium insensitive enzymes of this group may contribute to the generation of salt-tolerant crops. We have solved the crystal structure of Hal2p in complex with magnesium, lithium and the two products of PAP hydrolysis, AMP and Pi, at 1.6 A resolution. A functional screening of random mutations of the HAL2 gene in growing yeast generated forms of the enzyme with reduced cation sensitivity. Analysis of these mutants defined a salt bridge (Glu238 ellipsis Arg152) and a hydrophobic bond (Va170 ellipsis Trp293) as important framework interactions determining cation sensitivity. Hal2p belongs to a larger superfamily of lithium-sensitive phosphatases which includes inositol monophosphatase. The hydrophobic interaction mutated in Hal2p is conserved in this superfamily and its disruption in human inositol monophosphatase also resulted in reduced cation sensitivity.

X-ray structure of yeast Hal2p, a major target of lithium and sodium toxicity, and identification of framework interactions determining cation sensitivity.,Albert A, Yenush L, Gil-Mascarell MR, Rodriguez PL, Patel S, Martinez-Ripoll M, Blundell TL, Serrano R J Mol Biol. 2000 Jan 28;295(4):927-38. PMID:10656801^[1]

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

References

↑ Albert A, Yenush L, Gil-Mascarell MR, Rodriguez PL, Patel S, Martinez-Ripoll M, Blundell TL, Serrano R. X-ray structure of yeast Hal2p, a major target of lithium and sodium toxicity, and identification of framework interactions determining cation sensitivity. J Mol Biol. 2000 Jan 28;295(4):927-38. PMID:10656801 doi:10.1006/jmbi.1999.3408

1 Structural highlights
2 Function
3 Evolutionary Conservation
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/1qgx"

@@ Line 3: / Line 3: @@
 <StructureSection load='1qgx' size='340' side='right'caption='[[1qgx]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1qgx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QGX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QGX FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1qgx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QGX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QGX 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=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 1.6&#8491;</td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/3'(2'),5'-bisphosphate_nucleotidase 3'(2'),5'-bisphosphate nucleotidase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.7 3.1.3.7] </span></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=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=1qgx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qgx OCA], [https://pdbe.org/1qgx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qgx RCSB], [https://www.ebi.ac.uk/pdbsum/1qgx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qgx ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/MET22_YEAST MET22_YEAST]] Converts adenosine 3'-phosphate 5'-phosphosulfate (PAPS) to adenosine 5'-phosphosulfate (APS) and 3'(2')-phosphoadenosine 5'- phosphate (PAP) to AMP. Regulates the flux of sulfur in the sulfur-activation pathway by converting PAPS to APS. Involved in salt tolerance. Confers resistance to lithium.
+[https://www.uniprot.org/uniprot/MET22_YEAST MET22_YEAST] Converts adenosine 3'-phosphate 5'-phosphosulfate (PAPS) to adenosine 5'-phosphosulfate (APS) and 3'(2')-phosphoadenosine 5'- phosphate (PAP) to AMP. Regulates the flux of sulfur in the sulfur-activation pathway by converting PAPS to APS. Involved in salt tolerance. Confers resistance to lithium.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 36: / Line 36: @@
 __TOC__
 </StructureSection>
-[[Category: Atcc 18824]]
 [[Category: Large Structures]]
-[[Category: Albert, A]]
+[[Category: Saccharomyces cerevisiae]]
-[[Category: Blundell, T L]]
+[[Category: Albert A]]
-[[Category: Gil-Mascarell, M R]]
+[[Category: Blundell TL]]
-[[Category: Martinez-Ripoll, M]]
+[[Category: Gil-Mascarell MR]]
-[[Category: Patel, J]]
+[[Category: Martinez-Ripoll M]]
-[[Category: Rodriguez, P L]]
+[[Category: Patel J]]
-[[Category: Serrano, R]]
+[[Category: Rodriguez PL]]
-[[Category: Yenush, L]]
+[[Category: Serrano R]]
-[[Category: Hydrolase]]
+[[Category: Yenush L]]
-[[Category: Inositol]]
-[[Category: Nucleotidase]]
-[[Category: Salt tollerance]]

1qgx

From Proteopedia

Current revision

X-RAY STRUCTURE OF YEAST HAL2P

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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