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<StructureSection load='1ajc' size='340' side='right'caption='[[1ajc]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
<StructureSection load='1ajc' size='340' side='right'caption='[[1ajc]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1ajc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AJC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1AJC FirstGlance]. <br>
<table><tr><td colspan='2'>[[1ajc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AJC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1AJC 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=ZN:ZINC+ION'>ZN</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]] 2.5&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PHOA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</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=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Alkaline_phosphatase Alkaline phosphatase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.1 3.1.3.1] </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=1ajc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ajc OCA], [https://pdbe.org/1ajc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ajc RCSB], [https://www.ebi.ac.uk/pdbsum/1ajc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ajc 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=1ajc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ajc OCA], [https://pdbe.org/1ajc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ajc RCSB], [https://www.ebi.ac.uk/pdbsum/1ajc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ajc ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PPB_ECOLI PPB_ECOLI]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=1ajc 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=1ajc ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Here we present the refined crystal structures of three different conformational states of the Asp153--&gt;Gly mutant (D153G) of alkaline phosphatase (AP), a metalloenzyme from Escherichia coli. The apo state is induced in the crystal over a 3 month period by metal depletion of the holoenzyme crystals. Subsequently, the metals are reintroduced in the crystalline state in a time-dependent reversible manner without physically damaging the crystals. Two structural intermediates of the holo form based on data from a 2 week (intermediate I) and a 2 month soak (intermediate II) of the apo crystals with Mg2+ and Zn2+ have been identified. The three-dimensional crystal structures of the apo (R = 18.1%), intermediate I (R = 19.5%), and intermediate II (R = 19.9%) of the D153G enzyme have been refined and the corresponding structures analyzed and compared. Large conformational changes that extend from the mutant active site to surface loops, located 20 A away, are observed in the apo structure with respect to the holo structure. The structure of intermediate I shows the recovery of the entire enzyme to an almost native-like conformation, with the exception of residues Asp 51 and Asp 369 in the active site and the surface loop (406-410) which remains partially disordered. In the three-dimensional structure of intermediate II, both Asp 51 and Asp 369 are essentially in a native-like conformation, but the main chain of residues 406-408 within the loop is still not fully ordered. The D153G mutant protein exhibits weak, reversible, time dependent metal binding in solution and in the crystalline state.(ABSTRACT TRUNCATED AT 250 WORDS)
Crystallographic analysis of reversible metal binding observed in a mutant (Asp153--&gt;Gly) of Escherichia coli alkaline phosphatase.,Dealwis CG, Brennan C, Christianson K, Mandecki W, Abad-Zapatero C Biochemistry. 1995 Oct 31;34(43):13967-73. PMID:7577993<ref>PMID:7577993</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1ajc" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Alkaline phosphatase 3D structures|Alkaline phosphatase 3D structures]]
*[[Alkaline phosphatase 3D structures|Alkaline phosphatase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bacillus coli migula 1895]]
[[Category: Escherichia coli]]
[[Category: Alkaline phosphatase]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Abad-Zapatero, C]]
[[Category: Abad-Zapatero C]]
[[Category: Chen, L]]
[[Category: Chen L]]
[[Category: Dealwis, C G]]
[[Category: Dealwis CG]]
[[Category: Non specific mono-esterase]]

Revision as of 18:25, 13 March 2024

THREE-DIMENSIONAL STRUCTURE OF THE D153G MUTANT OF E. COLI ALKALINE PHOSPHATASE: A MUTANT WITH WEAKER MAGNESIUM BINDING AND INCREASED CATALYTIC ACTIVITYTHREE-DIMENSIONAL STRUCTURE OF THE D153G MUTANT OF E. COLI ALKALINE PHOSPHATASE: A MUTANT WITH WEAKER MAGNESIUM BINDING AND INCREASED CATALYTIC ACTIVITY

Structural highlights

1ajc is a 2 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.5Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PPB_ECOLI

Evolutionary Conservation

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

See Also

1ajc, resolution 2.50Å

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