2dqn
From Proteopedia
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|PDB= 2dqn |SIZE=350|CAPTION= <scene name='initialview01'>2dqn</scene>, resolution 2.55Å | |PDB= 2dqn |SIZE=350|CAPTION= <scene name='initialview01'>2dqn</scene>, resolution 2.55Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=ASN:ASPARAGINE'>ASN</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= gatA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]), gatB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]), gatC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]) | |GENE= gatA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]), gatB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]), gatC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[2f2a|2F2A]], [[2df4|2DF4]], [[2g5h|2G5H]], [[2g5i|2G5I]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2dqn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dqn OCA], [http://www.ebi.ac.uk/pdbsum/2dqn PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2dqn RCSB]</span> | ||
}} | }} | ||
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[[Category: Tanaka, I.]] | [[Category: Tanaka, I.]] | ||
[[Category: Yao, M.]] | [[Category: Yao, M.]] | ||
| - | [[Category: ASN]] | ||
| - | [[Category: MG]] | ||
[[Category: amidotransferase]] | [[Category: amidotransferase]] | ||
[[Category: trna]] | [[Category: trna]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 02:38:06 2008'' |
Revision as of 23:38, 30 March 2008
| |||||||
| , resolution 2.55Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | gatA (Staphylococcus aureus), gatB (Staphylococcus aureus), gatC (Staphylococcus aureus) | ||||||
| Related: | 2F2A, 2DF4, 2G5H, 2G5I
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of tRNA-Dependent Amidotransferase GatCAB complexed with Asn
Overview
The formation of glutaminyl transfer RNA (Gln-tRNA(Gln)) differs among the three domains of life. Most bacteria employ an indirect pathway to produce Gln-tRNA(Gln) by a heterotrimeric glutamine amidotransferase CAB (GatCAB) that acts on the misacylated Glu-tRNA(Gln). Here, we describe a series of crystal structures of intact GatCAB from Staphylococcus aureus in the apo form and in the complexes with glutamine, asparagine, Mn2+, and adenosine triphosphate analog. Two identified catalytic centers for the glutaminase and transamidase reactions are markedly distant but connected by a hydrophilic ammonia channel 30 A in length. Further, we show that the first U-A base pair in the acceptor stem and the D loop of tRNA(Gln) serve as identity elements essential for discrimination by GatCAB and propose a complete model for the overall concerted reactions to synthesize Gln-tRNA(Gln).
About this Structure
2DQN is a Protein complex structure of sequences from Staphylococcus aureus. Full crystallographic information is available from OCA.
Reference
Ammonia channel couples glutaminase with transamidase reactions in GatCAB., Nakamura A, Yao M, Chimnaronk S, Sakai N, Tanaka I, Science. 2006 Jun 30;312(5782):1954-8. PMID:16809541
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