1wxx: Difference between revisions
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'''Crystal structure of Tt1595, a putative SAM-dependent methyltransferase from Thermus thermophillus HB8''' | {{Structure | ||
|PDB= 1wxx |SIZE=350|CAPTION= <scene name='initialview01'>1wxx</scene>, resolution 1.80Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=K:POTASSIUM+ION'>K</scene> and <scene name='pdbligand=PO4:PHOSPHATE ION'>PO4</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''Crystal structure of Tt1595, a putative SAM-dependent methyltransferase from Thermus thermophillus HB8''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1WXX is a [ | 1WXX is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WXX OCA]. | ||
==Reference== | ==Reference== | ||
Structures of a putative RNA 5-methyluridine methyltransferase, Thermus thermophilus TTHA1280, and its complex with S-adenosyl-L-homocysteine., Pioszak AA, Murayama K, Nakagawa N, Ebihara A, Kuramitsu S, Shirouzu M, Yokoyama S, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 Oct 1;61(Pt, 10):867-74. Epub 2005 Sep 30. PMID:[http:// | Structures of a putative RNA 5-methyluridine methyltransferase, Thermus thermophilus TTHA1280, and its complex with S-adenosyl-L-homocysteine., Pioszak AA, Murayama K, Nakagawa N, Ebihara A, Kuramitsu S, Shirouzu M, Yokoyama S, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 Oct 1;61(Pt, 10):867-74. Epub 2005 Sep 30. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16511182 16511182] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Thermus thermophilus]] | [[Category: Thermus thermophilus]] | ||
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[[Category: adomet]] | [[Category: adomet]] | ||
[[Category: methyltransferase]] | [[Category: methyltransferase]] | ||
[[Category: national project on protein structural and functional | [[Category: national project on protein structural and functional analyse]] | ||
[[Category: nppsfa]] | [[Category: nppsfa]] | ||
[[Category: riken structural genomics/proteomics initiative]] | [[Category: riken structural genomics/proteomics initiative]] | ||
[[Category: rsgi]] | [[Category: rsgi]] | ||
[[Category: structural | [[Category: structural genomic]] | ||
[[Category: thermus thermophillus]] | [[Category: thermus thermophillus]] | ||
''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 15:02:53 2008'' | ||
Revision as of 13:02, 20 March 2008
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| 1wxx, resolution 1.80Å | |||||||||||||
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| Ligands: | K and PO4 | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Crystal structure of Tt1595, a putative SAM-dependent methyltransferase from Thermus thermophillus HB8
Overview
The Thermus thermophilus hypothetical protein TTHA1280 belongs to a family of predicted S-adenosyl-L-methionine (AdoMet) dependent RNA methyltransferases (MTases) present in many bacterial and archaeal species. Inspection of amino-acid sequence motifs common to class I Rossmann-fold-like MTases suggested a specific role as an RNA 5-methyluridine MTase. Selenomethionine (SeMet) labelled and native versions of the protein were expressed, purified and crystallized. Two crystal forms of the SeMet-labelled apoprotein were obtained: SeMet-ApoI and SeMet-ApoII. Cocrystallization of the native protein with S-adenosyl-L-homocysteine (AdoHcy) yielded a third crystal form, Native-AdoHcy. The SeMet-ApoI structure was solved by the multiple anomalous dispersion method and refined at 2.55 A resolution. The SeMet-ApoII and Native-AdoHcy structures were solved by molecular replacement and refined at 1.80 and 2.60 A, respectively. TTHA1280 formed a homodimer in the crystals and in solution. Each subunit folds into a three-domain structure composed of a small N-terminal PUA domain, a central alpha/beta-domain and a C-terminal Rossmann-fold-like MTase domain. The three domains form an overall clamp-like shape, with the putative active site facing a deep cleft. The architecture of the active site is consistent with specific recognition of uridine and catalysis of methyl transfer to the 5-carbon position. The cleft is suitable in size and charge distribution for binding single-stranded RNA.
About this Structure
1WXX is a Single protein structure of sequence from Thermus thermophilus. Full crystallographic information is available from OCA.
Reference
Structures of a putative RNA 5-methyluridine methyltransferase, Thermus thermophilus TTHA1280, and its complex with S-adenosyl-L-homocysteine., Pioszak AA, Murayama K, Nakagawa N, Ebihara A, Kuramitsu S, Shirouzu M, Yokoyama S, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 Oct 1;61(Pt, 10):867-74. Epub 2005 Sep 30. PMID:16511182
Page seeded by OCA on Thu Mar 20 15:02:53 2008
Proteopedia Page Contributors and Editors (what is this?)
- Pages with broken file links
- Single protein
- Thermus thermophilus
- Ebihara, A.
- Kuramitsu, S.
- Murayama, K.
- Nakagawa, N.
- Pioszak, A A.
- RSGI, RIKEN Structural Genomics/Proteomics Initiative.
- Shirouzu, M.
- Yokoyama, S.
- K
- PO4
- Adomet
- Methyltransferase
- National project on protein structural and functional analyse
- Nppsfa
- Riken structural genomics/proteomics initiative
- Rsgi
- Structural genomic
- Thermus thermophillus
