1g78: Difference between revisions
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[[Image:1g78.gif|left|200px]] | [[Image:1g78.gif|left|200px]] | ||
'''X-RAY STRUCTURE OF ESCHERICHIA COLI PYRIDOXINE 5'-PHOSPHATE OXIDASE COMPLEXED WITH PYRIDOXAL 5'-PHOSPHATE AT 2.0 A RESOLUTION''' | {{Structure | ||
|PDB= 1g78 |SIZE=350|CAPTION= <scene name='initialview01'>1g78</scene>, resolution 2.20Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene> and <scene name='pdbligand=PLP:PYRIDOXAL-5'-PHOSPHATE'>PLP</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Pyridoxal_5'-phosphate_synthase Pyridoxal 5'-phosphate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.3.5 1.4.3.5] | |||
|GENE= | |||
}} | |||
'''X-RAY STRUCTURE OF ESCHERICHIA COLI PYRIDOXINE 5'-PHOSPHATE OXIDASE COMPLEXED WITH PYRIDOXAL 5'-PHOSPHATE AT 2.0 A RESOLUTION''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1G78 is a [ | 1G78 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G78 OCA]. | ||
==Reference== | ==Reference== | ||
X-ray structure of Escherichia coli pyridoxine 5'-phosphate oxidase complexed with pyridoxal 5'-phosphate at 2.0 A resolution., Safo MK, Musayev FN, di Salvo ML, Schirch V, J Mol Biol. 2001 Jul 20;310(4):817-26. PMID:[http:// | X-ray structure of Escherichia coli pyridoxine 5'-phosphate oxidase complexed with pyridoxal 5'-phosphate at 2.0 A resolution., Safo MK, Musayev FN, di Salvo ML, Schirch V, J Mol Biol. 2001 Jul 20;310(4):817-26. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11453690 11453690] | ||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Pyridoxal 5'-phosphate synthase]] | [[Category: Pyridoxal 5'-phosphate synthase]] | ||
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[[Category: pyridoxine 5'-phosphate]] | [[Category: pyridoxine 5'-phosphate]] | ||
''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 11:19:08 2008'' | ||
Revision as of 12:19, 20 March 2008
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| , resolution 2.20Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , and | ||||||
| Activity: | Pyridoxal 5'-phosphate synthase, with EC number 1.4.3.5 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
X-RAY STRUCTURE OF ESCHERICHIA COLI PYRIDOXINE 5'-PHOSPHATE OXIDASE COMPLEXED WITH PYRIDOXAL 5'-PHOSPHATE AT 2.0 A RESOLUTION
OverviewOverview
Escherichia coli pyridoxine 5'-phosphate oxidase catalyzes the terminal step in the biosynthesis of pyridoxal 5'-phosphate by the FMN oxidation of pyridoxine 5'-phosphate forming FMNH(2) and H(2)O(2). Recent studies have shown that in addition to the active site, pyridoxine 5'-phosphate oxidase contains a non-catalytic site that binds pyridoxal 5'-phosphate tightly. The crystal structure of pyridoxine 5'-phosphate oxidase from E. coli with one or two molecules of pyridoxal 5'-phosphate bound to each monomer has been determined to 2.0 A resolution. One of the pyridoxal 5'-phosphate molecules is clearly bound at the active site with the aldehyde at C4' of pyridoxal 5'-phosphate near N5 of the bound FMN. A protein conformational change has occurred that partially closes the active site. The orientation of the bound pyridoxal 5'-phosphate suggests that the enzyme catalyzes a hydride ion transfer between C4' of pyridoxal 5'-phosphate and N5 of FMN. When the crystals are soaked with excess pyridoxal 5'-phosphate an additional molecule of this cofactor is also bound about 11 A from the active site. A possible tunnel exists between the two sites so that pyridoxal 5'-phosphate formed at the active site may transfer to the non-catalytic site without passing though the solvent.
About this StructureAbout this Structure
1G78 is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
ReferenceReference
X-ray structure of Escherichia coli pyridoxine 5'-phosphate oxidase complexed with pyridoxal 5'-phosphate at 2.0 A resolution., Safo MK, Musayev FN, di Salvo ML, Schirch V, J Mol Biol. 2001 Jul 20;310(4):817-26. PMID:11453690
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