1dqr
From Proteopedia
(New page: 200px<br /><applet load="1dqr" size="450" color="white" frame="true" align="right" spinBox="true" caption="1dqr, resolution 2.5Å" /> '''CRYSTAL STRUCTURE OF ...) |
|||
| Line 1: | Line 1: | ||
| - | [[Image:1dqr.gif|left|200px]]<br /><applet load="1dqr" size=" | + | [[Image:1dqr.gif|left|200px]]<br /><applet load="1dqr" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1dqr, resolution 2.5Å" /> | caption="1dqr, resolution 2.5Å" /> | ||
'''CRYSTAL STRUCTURE OF RABBIT PHOSPHOGLUCOSE ISOMERASE, A GLYCOLYTIC ENZYME THAT MOONLIGHTS AS NEUROLEUKIN, AUTOCRINE MOTILITY FACTOR, AND DIFFERENTIATION MEDIATOR'''<br /> | '''CRYSTAL STRUCTURE OF RABBIT PHOSPHOGLUCOSE ISOMERASE, A GLYCOLYTIC ENZYME THAT MOONLIGHTS AS NEUROLEUKIN, AUTOCRINE MOTILITY FACTOR, AND DIFFERENTIATION MEDIATOR'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The multifunctional protein phosphoglucose isomerase, also known as | + | The multifunctional protein phosphoglucose isomerase, also known as neuroleukin, autocrine motility factor, and differentiation and maturation mediator, has different roles inside and outside the cell. In the cytoplasm, it catalyzes the second step in glycolysis. Outside the cell, it serves as a nerve growth factor and cytokine. We have determined the three-dimensional structure of rabbit muscle phosphoglucose isomerase complexed with the competitive inhibitor D-gluconate 6-phosphate by X-ray crystallography at 2.5 A resolution. The structure shows that the enzyme is a dimer with two alpha/beta-sandwich domains in each subunit. The location of the bound D-gluconate 6-phosphate inhibitor leads to the identification of residues involved in substrate specificity (Ser209, Ser159, Thr214, Thr217, and Thr211). The results of previously published kinetic studies suggest that a lysine and a histidine are involved in the catalytic mechanism. The crystal structure suggests active site residues Lys518 and His388 might be these residues. In addition, the positions of amino acid residues that are substituted in the genetic disease nonspherocytic hemolytic anemia suggest how these substitutions can result in altered catalysis or protein stability. |
==About this Structure== | ==About this Structure== | ||
| - | 1DQR is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus] with 6PG as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Glucose-6-phosphate_isomerase Glucose-6-phosphate isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.1.9 5.3.1.9] Full crystallographic information is available from [http:// | + | 1DQR is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus] with <scene name='pdbligand=6PG:'>6PG</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Glucose-6-phosphate_isomerase Glucose-6-phosphate isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.1.9 5.3.1.9] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DQR OCA]. |
==Reference== | ==Reference== | ||
| Line 14: | Line 14: | ||
[[Category: Oryctolagus cuniculus]] | [[Category: Oryctolagus cuniculus]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Bahnson, B | + | [[Category: Bahnson, B J.]] |
| - | [[Category: Jeffery, C | + | [[Category: Jeffery, C J.]] |
| - | [[Category: Petsko, G | + | [[Category: Petsko, G A.]] |
[[Category: Ringe, D.]] | [[Category: Ringe, D.]] | ||
[[Category: 6PG]] | [[Category: 6PG]] | ||
| Line 23: | Line 23: | ||
[[Category: parallel beta sheet]] | [[Category: parallel beta sheet]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:19:26 2008'' |
Revision as of 10:19, 21 February 2008
|
CRYSTAL STRUCTURE OF RABBIT PHOSPHOGLUCOSE ISOMERASE, A GLYCOLYTIC ENZYME THAT MOONLIGHTS AS NEUROLEUKIN, AUTOCRINE MOTILITY FACTOR, AND DIFFERENTIATION MEDIATOR
Overview
The multifunctional protein phosphoglucose isomerase, also known as neuroleukin, autocrine motility factor, and differentiation and maturation mediator, has different roles inside and outside the cell. In the cytoplasm, it catalyzes the second step in glycolysis. Outside the cell, it serves as a nerve growth factor and cytokine. We have determined the three-dimensional structure of rabbit muscle phosphoglucose isomerase complexed with the competitive inhibitor D-gluconate 6-phosphate by X-ray crystallography at 2.5 A resolution. The structure shows that the enzyme is a dimer with two alpha/beta-sandwich domains in each subunit. The location of the bound D-gluconate 6-phosphate inhibitor leads to the identification of residues involved in substrate specificity (Ser209, Ser159, Thr214, Thr217, and Thr211). The results of previously published kinetic studies suggest that a lysine and a histidine are involved in the catalytic mechanism. The crystal structure suggests active site residues Lys518 and His388 might be these residues. In addition, the positions of amino acid residues that are substituted in the genetic disease nonspherocytic hemolytic anemia suggest how these substitutions can result in altered catalysis or protein stability.
About this Structure
1DQR is a Single protein structure of sequence from Oryctolagus cuniculus with as ligand. Active as Glucose-6-phosphate isomerase, with EC number 5.3.1.9 Full crystallographic information is available from OCA.
Reference
Crystal structure of rabbit phosphoglucose isomerase, a glycolytic enzyme that moonlights as neuroleukin, autocrine motility factor, and differentiation mediator., Jeffery CJ, Bahnson BJ, Chien W, Ringe D, Petsko GA, Biochemistry. 2000 Feb 8;39(5):955-64. PMID:10653639
Page seeded by OCA on Thu Feb 21 12:19:26 2008
