1gpd: Difference between revisions
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[[Image:1gpd.gif|left|200px]] | [[Image:1gpd.gif|left|200px]] | ||
'''STUDIES OF ASYMMETRY IN THE THREE-DIMENSIONAL STRUCTURE OF LOBSTER D-GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE''' | {{Structure | ||
|PDB= 1gpd |SIZE=350|CAPTION= <scene name='initialview01'>1gpd</scene>, resolution 2.9Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene> and <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene> | |||
|ACTIVITY= [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] | |||
|GENE= | |||
}} | |||
'''STUDIES OF ASYMMETRY IN THE THREE-DIMENSIONAL STRUCTURE OF LOBSTER D-GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1GPD is a [ | 1GPD is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homarus_americanus Homarus americanus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GPD OCA]. | ||
==Reference== | ==Reference== | ||
Studies of asymmetry in the three-dimensional structure of lobster D-glyceraldehyde-3-phosphate dehydrogenase., Moras D, Olsen KW, Sabesan MN, Buehner M, Ford GC, Rossmann MG, J Biol Chem. 1975 Dec 10;250(23):9137-62. PMID:[http:// | Studies of asymmetry in the three-dimensional structure of lobster D-glyceraldehyde-3-phosphate dehydrogenase., Moras D, Olsen KW, Sabesan MN, Buehner M, Ford GC, Rossmann MG, J Biol Chem. 1975 Dec 10;250(23):9137-62. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/127793 127793] | ||
[[Category: Glyceraldehyde-3-phosphate dehydrogenase (phosphorylating)]] | [[Category: Glyceraldehyde-3-phosphate dehydrogenase (phosphorylating)]] | ||
[[Category: Homarus americanus]] | [[Category: Homarus americanus]] | ||
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[[Category: oxido-reductse(aldehyde/donr]] | [[Category: oxido-reductse(aldehyde/donr]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:26:18 2008'' | ||
Revision as of 12:26, 20 March 2008
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| , resolution 2.9Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , and | ||||||
| Activity: | Glyceraldehyde-3-phosphate dehydrogenase (phosphorylating), with EC number 1.2.1.12 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STUDIES OF ASYMMETRY IN THE THREE-DIMENSIONAL STRUCTURE OF LOBSTER D-GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE
OverviewOverview
An improved electron density map of lobster holo-D-glyceraldehyde-3-phosphate dehydrogenase has been computed to 2.9 A resolution based on two heavy atom isomorphous derivatives. This has been averaged only over the Q molecular 2-fold axis, which is known to be exact in the human holoenzyme. The map showed possible asymmetry between the subunits in which the active centers are closely related across the R axis (that is, between the red and green or between the yellow and blue subunits). A difference map between the electron density of citrate and sulfate-soaked crystals gave further evidence for possible asymmetry. The major differences of electron density between R axis-related subunits appear around the active center and suggest the following interpretations. 1. The conformation of the adenine about the glycosidic bond is the more frequently observed anti with a C-2' endo conformation for the ribose ring in the red and yellow subunits, but is probably syn with a C-3' endo conformation in the green and blue subunits.2. The adenine ribose has its 3'-hydroxyl group hydrogen-bonded to a main chain carbonyl group in the red and yellow subunits but not in the green and blue subunits, as a consequence of the differing ribose conformations. 3. Cysteine-149 is more closely associated with histidine-176 in the green and blue subunits, and appears nearer the nicotinamide in the red and yellow subunits.
About this StructureAbout this Structure
1GPD is a Single protein structure of sequence from Homarus americanus. Full crystallographic information is available from OCA.
ReferenceReference
Studies of asymmetry in the three-dimensional structure of lobster D-glyceraldehyde-3-phosphate dehydrogenase., Moras D, Olsen KW, Sabesan MN, Buehner M, Ford GC, Rossmann MG, J Biol Chem. 1975 Dec 10;250(23):9137-62. PMID:127793
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