2df4: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:2df4.gif|left|200px]] | [[Image:2df4.gif|left|200px]] | ||
'''Structure of tRNA-Dependent Amidotransferase GatCAB complexed with Mn2+''' | {{Structure | ||
|PDB= 2df4 |SIZE=350|CAPTION= <scene name='initialview01'>2df4</scene>, resolution 3.2Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=MN:MANGANESE (II) ION'>MN</scene> | |||
|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]) | |||
}} | |||
'''Structure of tRNA-Dependent Amidotransferase GatCAB complexed with Mn2+''' | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
2DF4 is a [ | 2DF4 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DF4 OCA]. | ||
==Reference== | ==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:[http:// | 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:[http://www.ncbi.nlm.nih.gov/pubmed/16809541 16809541] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Staphylococcus aureus]] | [[Category: Staphylococcus aureus]] | ||
| Line 19: | Line 28: | ||
[[Category: multi protein complex]] | [[Category: multi protein complex]] | ||
''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 16:26:35 2008'' | ||
Revision as of 17:26, 20 March 2008
| |||||||
| , resolution 3.2Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | gatA (Staphylococcus aureus), gatB (Staphylococcus aureus), gatC (Staphylococcus aureus) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of tRNA-Dependent Amidotransferase GatCAB complexed with Mn2+
OverviewOverview
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 StructureAbout this Structure
2DF4 is a Protein complex structure of sequences from Staphylococcus aureus. Full crystallographic information is available from OCA.
ReferenceReference
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
Page seeded by OCA on Thu Mar 20 16:26:35 2008