2d1p
From Proteopedia
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| - | [[Image:2d1p.gif|left|200px]] | + | [[Image:2d1p.gif|left|200px]] |
| - | + | ||
| - | '''crystal structure of heterohexameric TusBCD proteins, which are crucial for the tRNA modification''' | + | {{Structure |
| + | |PDB= 2d1p |SIZE=350|CAPTION= <scene name='initialview01'>2d1p</scene>, resolution 2.15Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= yheN ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]), yheM ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]), yheL ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]) | ||
| + | }} | ||
| + | |||
| + | '''crystal structure of heterohexameric TusBCD proteins, which are crucial for the tRNA modification''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2D1P is a [ | + | 2D1P is a [[Protein complex]] structure of sequences 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=2D1P OCA]. |
==Reference== | ==Reference== | ||
| - | Structural basis for sulfur relay to RNA mediated by heterohexameric TusBCD complex., Numata T, Fukai S, Ikeuchi Y, Suzuki T, Nureki O, Structure. 2006 Feb;14(2):357-66. PMID:[http:// | + | Structural basis for sulfur relay to RNA mediated by heterohexameric TusBCD complex., Numata T, Fukai S, Ikeuchi Y, Suzuki T, Nureki O, Structure. 2006 Feb;14(2):357-66. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16472754 16472754] |
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
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[[Category: Suzuki, T.]] | [[Category: Suzuki, T.]] | ||
[[Category: SO4]] | [[Category: SO4]] | ||
| - | [[Category: structural | + | [[Category: structural genomic]] |
[[Category: sulfur transfer]] | [[Category: sulfur transfer]] | ||
[[Category: trna modification]] | [[Category: trna modification]] | ||
| - | ''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 16:22:12 2008'' |
Revision as of 14:22, 20 March 2008
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| , resolution 2.15Å | |||||||
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| Ligands: | |||||||
| Gene: | yheN (Escherichia coli), yheM (Escherichia coli), yheL (Escherichia coli) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
crystal structure of heterohexameric TusBCD proteins, which are crucial for the tRNA modification
Overview
Uridine at wobble position 34 of tRNA(Lys), tRNA(Glu), and tRNA(Gln) is exclusively modified into 2-thiouridine (s2U), which is crucial for both precise codon recognition and recognition by the cognate aminoacyl-tRNA synthetases. Recent Escherichia coli genetic studies revealed that the products of five novel genes, tusABCDE, function in the s2U modification. Here, we solved the 2.15 angstroms crystal structure of the E. coli TusBCD complex, a sulfur transfer mediator, forming a heterohexamer composed of a dimer of the heterotrimer. Structure-based sequence alignment suggested two putative active site Cys residues, Cys79 (in TusC) and Cys78 (in TusD), which are exposed on the hexameric complex. In vivo mutant analyses revealed that only Cys78, in the TusD subunit, participates in sulfur transfer during the s2U modification process. Since the single Cys acts as a catalytic residue, we proposed that TusBCD mediates sulfur relay via a putative persulfide state of the TusD subunit.
About this Structure
2D1P is a Protein complex structure of sequences from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Structural basis for sulfur relay to RNA mediated by heterohexameric TusBCD complex., Numata T, Fukai S, Ikeuchi Y, Suzuki T, Nureki O, Structure. 2006 Feb;14(2):357-66. PMID:16472754
Page seeded by OCA on Thu Mar 20 16:22:12 2008
