1nq5: Difference between revisions

Revision as of 02:50, 3 May 2008

Glyceraldehyde-3-Phosphate Dehydrogenase Mutant With Cys 149 Replaced By Ser Complexed With Nad+

OverviewOverview

The crystal structure of the phosphorylating glyceraldehyde-3-phosphate dehydrogenase (GAPDH) from Bacillus stearothermophilus was solved in complex with its cofactor, NAD, and its physiological substrate, D-glyceraldehyde 3-phosphate (D-G3P). To isolate a stable ternary complex, the nucleophilic residue of the active site, Cys(149), was substituted with alanine or serine. The C149A and C149S GAPDH ternary complexes were obtained by soaking the crystals of the corresponding binary complexes (enzyme.NAD) in a solution containing G3P. The structures of the two binary and the two ternary complexes are presented. The D-G3P adopts the same conformation in the two ternary complexes. It is bound in a non-covalent way, in the free aldehyde form, its C-3 phosphate group being positioned in the P(s) site and not in the P(i) site. Its C-1 carbonyl oxygen points toward the essential His(176), which supports the role proposed for this residue along the two steps of the catalytic pathway. Arguments are provided that the structures reported here are representative of a productive enzyme.NAD.D-G3P complex in the ground state (Michaelis complex).

About this StructureAbout this Structure

1NQ5 is a Single protein structure of sequence from Geobacillus stearothermophilus. Full crystallographic information is available from OCA.

ReferenceReference

Crystal structure of two ternary complexes of phosphorylating glyceraldehyde-3-phosphate dehydrogenase from Bacillus stearothermophilus with NAD and D-glyceraldehyde 3-phosphate., Didierjean C, Corbier C, Fatih M, Favier F, Boschi-Muller S, Branlant G, Aubry A, J Biol Chem. 2003 Apr 11;278(15):12968-76. Epub 2003 Feb 4. PMID:12569100 Page seeded by OCA on Sat May 3 02:50:51 2008

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OCA

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 [[Image:1nq5.gif|left|200px]]
- {{Structure
+<!--
-|PDB= 1nq5 |SIZE=350|CAPTION= <scene name='initialview01'>1nq5</scene>, resolution 2.11&Aring;
+The line below this paragraph, containing "STRUCTURE_1nq5", creates the "Structure Box" on the page.
-|SITE=
+You may change the PDB parameter (which sets the PDB file loaded into the applet)
-|LIGAND= <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
+or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
-|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Glyceraldehyde-3-phosphate_dehydrogenase_(phosphorylating) Glyceraldehyde-3-phosphate dehydrogenase (phosphorylating)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.2.1.12 1.2.1.12] </span>
+or leave the SCENE parameter empty for the default display.
-|GENE= GAP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1422 Geobacillus stearothermophilus])
+-->
-|DOMAIN=
+{{STRUCTURE_1nq5|  PDB=1nq5  |  SCENE=  }}
-|RELATEDENTRY=[[1npt|1NPT]], [[1nqa|1NQA]], [[1nqo|1NQO]]
-|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1nq5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nq5 OCA], [http://www.ebi.ac.uk/pdbsum/1nq5 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1nq5 RCSB]</span>
-}}
 '''Glyceraldehyde-3-Phosphate Dehydrogenase Mutant With Cys 149 Replaced By Ser Complexed With Nad+'''
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 Crystal structure of two ternary complexes of phosphorylating glyceraldehyde-3-phosphate dehydrogenase from Bacillus stearothermophilus with NAD and D-glyceraldehyde 3-phosphate., Didierjean C, Corbier C, Fatih M, Favier F, Boschi-Muller S, Branlant G, Aubry A, J Biol Chem. 2003 Apr 11;278(15):12968-76. Epub 2003 Feb 4. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12569100 12569100]
 [[Category: Geobacillus stearothermophilus]]
-[[Category: Glyceraldehyde-3-phosphate dehydrogenase (phosphorylating)]]
 [[Category: Single protein]]
 [[Category: Aubry, A.]]
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 [[Category: Fatih, M.]]
 [[Category: Favier, F.]]
-[[Category: glycolysis]]
+[[Category: Glycolysis]]
-[[Category: nad]]
+[[Category: Nad]]
-[[Category: oxidoreductase]]
+[[Category: Oxidoreductase]]
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 02:50:51 2008''
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:33:59 2008''