1mjx

<table><tr><td colspan='2'>[[1mjx]] is a 2 chain structure with sequence from [http://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=1MJX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1MJX FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Inorganic_diphosphatase Inorganic diphosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.1.1 3.6.1.1] </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=1mjx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mjx OCA], [http://pdbe.org/1mjx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1mjx RCSB], [http://www.ebi.ac.uk/pdbsum/1mjx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1mjx ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

The three-dimensional structures of four mutant E. coli inorganic pyrophosphatases (PPases) with single Asp--&gt;Asn substitutions at positions 42, 65, 70, and 97 were solved at 1.95, 2.15, 2.10, and 2.20 A resolution, respectively. Asp-42--&gt;Asn and Asp-65--&gt;Asn mutant PPases were prepared as complexes with sulfate--a structural analog of phosphate, the product of enzymatic reaction. A comparison of mutant enzymes with native PPases revealed that a single amino acid substitution changes the position of the mutated residue as well as the positions of several functional groups and some parts of a polypeptide chain. These changes are responsible for the fact that mutant PPases differ from the native ones in their catalytic properties. The sulfate binding to the mutant PPase active site causes molecular asymmetry, as shown for the native PPase earlier. The subunit asymmetry is manifested in different positions of sulfate and several functional groups, as well as changes in packing of hexamers in crystals and in cell parameters.

Three-dimensional structures of mutant forms of E. coli inorganic pyrophosphatase with Asp--&gt;Asn single substitution in positions 42, 65, 70, and 97.,Avaeva SM, Rodina EV, Vorobyeva NN, Kurilova SA, Nazarova TI, Sklyankina VA, Oganessyan VY, Samygina VR, Harutyunyan EH Biochemistry (Mosc). 1998 Jun;63(6):671-84. PMID:9668207<ref>PMID:9668207</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1mjx" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Bacillus coli migula 1895]]

[[Category: Inorganic diphosphatase]]

[[Category: Avaeva, S M]]

[[Category: Harutyunyan, E H]]

[[Category: Huber, R]]

[[Category: Oganesyan, V]]

[[Category: Mutation]]