1obw: Difference between revisions

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[[Image:1obw.~~jpg~~|left|200px]]

[[Image:1obw.png|left|200px]]

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~~'''~~STRUCTURE OF INORGANIC PYROPHOSPHATASE~~'''~~

===STRUCTURE OF INORGANIC PYROPHOSPHATASE===

~~==Overview==~~

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~~Crystalline holo inorganic pyrophosphatase from Escherichia coli was grown in the presence of 250 mM MgCl2. The crystal structure has been solved by Patterson search techniques and refined to an R~~-~~factor of 17.6% at 1.9 A resolution. The upper estimate of the root~~-~~mean-square error in atomic positions is 0.26 A. These crystals belong to space group P3(2)21 with unit cell dimensions a = b = 110.27 A and c = 78.17 A.~~ The ~~asymmetric unit contains a trimer of subunits~~, ~~i.e.~~, ~~half of~~ the ~~hexameric molecule~~. ~~In the central cavity of the enzyme molecule, three Mg2+ ions, each shared by two subunits of the hexamer, are found~~. ~~In the active sites of two crystallographically independent subunits~~, ~~two Mg2+ ions are bound. The second active site Mg2+ ion~~ is ~~missing in~~ the ~~third subunit. A mechanism of catalysis is proposed whereby a water molecule activated by a Mg2+ ion and Tyr 55 play essential roles~~.

The line below this paragraph, {{ABSTRACT_PUBMED_9201917}}, adds the Publication Abstract to the page

(as it appears on PubMed at http://www.pubmed.gov), where 9201917 is the PubMed ID number.

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==About this Structure==

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[[Category: Magnesium]]

[[Category: Metal binding]]

''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on ~~Sat May 3 03~~:38:47 2008''

''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 04:54:30 2008''

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-[[Image:1obw.jpg|left|200px]]
+{{Seed}}
+[[Image:1obw.png|left|200px]]
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 {{STRUCTURE_1obw|  PDB=1obw  |  SCENE=  }}
-'''STRUCTURE OF INORGANIC PYROPHOSPHATASE'''
+===STRUCTURE OF INORGANIC PYROPHOSPHATASE===
-==Overview==
+<!--
-Crystalline holo inorganic pyrophosphatase from Escherichia coli was grown in the presence of 250 mM MgCl2. The crystal structure has been solved by Patterson search techniques and refined to an R-factor of 17.6% at 1.9 A resolution. The upper estimate of the root-mean-square error in atomic positions is 0.26 A. These crystals belong to space group P3(2)21 with unit cell dimensions a = b = 110.27 A and c = 78.17 A. The asymmetric unit contains a trimer of subunits, i.e., half of the hexameric molecule. In the central cavity of the enzyme molecule, three Mg2+ ions, each shared by two subunits of the hexamer, are found. In the active sites of two crystallographically independent subunits, two Mg2+ ions are bound. The second active site Mg2+ ion is missing in the third subunit. A mechanism of catalysis is proposed whereby a water molecule activated by a Mg2+ ion and Tyr 55 play essential roles.
+The line below this paragraph, {{ABSTRACT_PUBMED_9201917}}, adds the Publication Abstract to the page
+(as it appears on PubMed at http://www.pubmed.gov), where 9201917 is the PubMed ID number.
+-->
+{{ABSTRACT_PUBMED_9201917}}
 ==About this Structure==
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 [[Category: Magnesium]]
 [[Category: Metal binding]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 03:38:47 2008''
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 04:54:30 2008''