1gpj: Difference between revisions
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[[Image:1gpj.gif|left|200px]] | [[Image:1gpj.gif|left|200px]] | ||
'''GLUTAMYL-TRNA REDUCTASE FROM METHANOPYRUS KANDLERI''' | {{Structure | ||
|PDB= 1gpj |SIZE=350|CAPTION= <scene name='initialview01'>1gpj</scene>, resolution 1.95Å | |||
|SITE= <scene name='pdbsite=AC1:Cit+Binding+Site+For+Chain+A'>AC1</scene> | |||
|LIGAND= <scene name='pdbligand=GMC:(2R,3R,4S,5S)-4-AMINO-2-[6-(DIMETHYLAMINO)-9H-PURIN-9-YL]-5-(HYDROXYMETHYL)TETRAHYDRO-3-FURANOL'>GMC</scene> and <scene name='pdbligand=CIT:CITRIC ACID'>CIT</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''GLUTAMYL-TRNA REDUCTASE FROM METHANOPYRUS KANDLERI''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1GPJ is a [ | 1GPJ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Methanopyrus_kandleri Methanopyrus kandleri]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GPJ OCA]. | ||
==Reference== | ==Reference== | ||
V-shaped structure of glutamyl-tRNA reductase, the first enzyme of tRNA-dependent tetrapyrrole biosynthesis., Moser J, Schubert WD, Beier V, Bringemeier I, Jahn D, Heinz DW, EMBO J. 2001 Dec 3;20(23):6583-90. PMID:[http:// | V-shaped structure of glutamyl-tRNA reductase, the first enzyme of tRNA-dependent tetrapyrrole biosynthesis., Moser J, Schubert WD, Beier V, Bringemeier I, Jahn D, Heinz DW, EMBO J. 2001 Dec 3;20(23):6583-90. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11726494 11726494] | ||
[[Category: Methanopyrus kandleri]] | [[Category: Methanopyrus kandleri]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: trna-dependent tetrapyrrole biosynthesis]] | [[Category: trna-dependent tetrapyrrole biosynthesis]] | ||
''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 11:26:13 2008'' | ||
Revision as of 09:26, 20 March 2008
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| 1gpj, resolution 1.95Å | |||||||||||||
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| Sites: | AC1 | ||||||||||||
| Ligands: | GMC and CIT | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
GLUTAMYL-TRNA REDUCTASE FROM METHANOPYRUS KANDLERI
Overview
Processes vital to life such as respiration and photosynthesis critically depend on the availability of tetrapyrroles including hemes and chlorophylls. tRNA-dependent catalysis generally is associated with protein biosynthesis. An exception is the reduction of glutamyl-tRNA to glutamate-1-semialdehyde by the enzyme glutamyl-tRNA reductase. This reaction is the indispensable initiating step of tetrapyrrole biosynthesis in plants and most prokaryotes. The crystal structure of glutamyl-tRNA reductase from the archaeon Methanopyrus kandleri in complex with the substrate-like inhibitor glutamycin at 1.9 A resolution reveals an extended yet planar V-shaped dimer. The well defined interactions of the inhibitor with the active site support a thioester-mediated reduction process. Modeling the glutamyl-tRNA onto each monomer reveals an extensive protein-tRNA interface. We furthermore propose a model whereby the large void of glutamyl-tRNA reductase is occupied by glutamate-1-semialdehyde-1,2-mutase, the subsequent enzyme of this pathway, allowing for the efficient synthesis of 5-aminolevulinic acid, the common precursor of all tetrapyrroles.
About this Structure
1GPJ is a Single protein structure of sequence from Methanopyrus kandleri. Full crystallographic information is available from OCA.
Reference
V-shaped structure of glutamyl-tRNA reductase, the first enzyme of tRNA-dependent tetrapyrrole biosynthesis., Moser J, Schubert WD, Beier V, Bringemeier I, Jahn D, Heinz DW, EMBO J. 2001 Dec 3;20(23):6583-90. PMID:11726494
Page seeded by OCA on Thu Mar 20 11:26:13 2008
