1agx
From Proteopedia
(New page: 200px<br /><applet load="1agx" size="450" color="white" frame="true" align="right" spinBox="true" caption="1agx, resolution 2.9Å" /> '''REFINED CRYSTAL STRUC...) |
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| - | [[Image:1agx.gif|left|200px]]<br /><applet load="1agx" size=" | + | [[Image:1agx.gif|left|200px]]<br /><applet load="1agx" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1agx, resolution 2.9Å" /> | caption="1agx, resolution 2.9Å" /> | ||
'''REFINED CRYSTAL STRUCTURE OF ACINETOBACTER GLUTAMINASIFICANS GLUTAMINASE-ASPARAGINASE'''<br /> | '''REFINED CRYSTAL STRUCTURE OF ACINETOBACTER GLUTAMINASIFICANS GLUTAMINASE-ASPARAGINASE'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The crystal structure of glutaminase-asparaginase from Acinetobacter | + | The crystal structure of glutaminase-asparaginase from Acinetobacter glutaminasificans has been reinterpreted and refined to an R factor of 0.171 at 2.9 A resolution, using the same X-ray diffraction data that were used to build a preliminary model of this enzyme [Ammon, Weber, Wlodawer, Harrison, Gilliland, Murphy, Sjolin & Roberts (1988). J. Biol. Chem. 263, 150-156]. The current model, which does not include solvent, is based in part on the related structure of Escherichia coli asparaginase and is significantly different from the structure of the enzyme from A. glutaminasificans described previously. The reason for the discrepancies has been traced to insufficient phasing power of the original heavy-atom derivative data, which could not be compensated for fully by electron-density modification techniques. The corrected structure of A. glutaminasificans glutaminase-asparaginase is presented and compared with the preliminary model and with the structure of E. coli asparaginase. |
==About this Structure== | ==About this Structure== | ||
| - | 1AGX is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Acinetobacter_glutaminasificans Acinetobacter glutaminasificans]. Active as [http://en.wikipedia.org/wiki/Asparaginase Asparaginase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.1.1 3.5.1.1] Full crystallographic information is available from [http:// | + | 1AGX is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Acinetobacter_glutaminasificans Acinetobacter glutaminasificans]. Active as [http://en.wikipedia.org/wiki/Asparaginase Asparaginase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.1.1 3.5.1.1] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AGX OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Asparaginase]] | [[Category: Asparaginase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Ammon, H | + | [[Category: Ammon, H L.]] |
[[Category: Housset, D.]] | [[Category: Housset, D.]] | ||
[[Category: Lubkowski, J.]] | [[Category: Lubkowski, J.]] | ||
| - | [[Category: Murphy, K | + | [[Category: Murphy, K C.]] |
| - | [[Category: Swain, A | + | [[Category: Swain, A L.]] |
| - | [[Category: Weber, I | + | [[Category: Weber, I T.]] |
[[Category: Wlodawer, A.]] | [[Category: Wlodawer, A.]] | ||
[[Category: bacterial amidohydrolase]] | [[Category: bacterial amidohydrolase]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 11:44:21 2008'' |
Revision as of 09:44, 21 February 2008
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REFINED CRYSTAL STRUCTURE OF ACINETOBACTER GLUTAMINASIFICANS GLUTAMINASE-ASPARAGINASE
Overview
The crystal structure of glutaminase-asparaginase from Acinetobacter glutaminasificans has been reinterpreted and refined to an R factor of 0.171 at 2.9 A resolution, using the same X-ray diffraction data that were used to build a preliminary model of this enzyme [Ammon, Weber, Wlodawer, Harrison, Gilliland, Murphy, Sjolin & Roberts (1988). J. Biol. Chem. 263, 150-156]. The current model, which does not include solvent, is based in part on the related structure of Escherichia coli asparaginase and is significantly different from the structure of the enzyme from A. glutaminasificans described previously. The reason for the discrepancies has been traced to insufficient phasing power of the original heavy-atom derivative data, which could not be compensated for fully by electron-density modification techniques. The corrected structure of A. glutaminasificans glutaminase-asparaginase is presented and compared with the preliminary model and with the structure of E. coli asparaginase.
About this Structure
1AGX is a Single protein structure of sequence from Acinetobacter glutaminasificans. Active as Asparaginase, with EC number 3.5.1.1 Full crystallographic information is available from OCA.
Reference
Refined crystal structure of Acinetobacter glutaminasificans glutaminase-asparaginase., Lubkowski J, Wlodawer A, Housset D, Weber IT, Ammon HL, Murphy KC, Swain AL, Acta Crystallogr D Biol Crystallogr. 1994 Nov 1;50(Pt 6):826-32. PMID:15299349
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