1ww1
From Proteopedia
(New page: 200px<br /><applet load="1ww1" size="450" color="white" frame="true" align="right" spinBox="true" caption="1ww1, resolution 2.60Å" /> '''Crystal structure of...) |
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| - | [[Image:1ww1.gif|left|200px]]<br /><applet load="1ww1" size=" | + | [[Image:1ww1.gif|left|200px]]<br /><applet load="1ww1" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1ww1, resolution 2.60Å" /> | caption="1ww1, resolution 2.60Å" /> | ||
'''Crystal structure of tRNase Z from Thermotoga maritima'''<br /> | '''Crystal structure of tRNase Z from Thermotoga maritima'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The maturation of the tRNA 3' end is catalyzed by a tRNA 3' processing | + | The maturation of the tRNA 3' end is catalyzed by a tRNA 3' processing endoribonuclease named tRNase Z (RNase Z or 3'-tRNase) in eukaryotes, Archaea, and some bacteria. The tRNase Z generally cuts the 3' extra sequence from the precursor tRNA after the discriminator nucleotide. In contrast, Thermotoga maritima tRNase Z cleaves the precursor tRNA precisely after the CCA sequence. In this study, we determined the crystal structure of T. maritima tRNase Z at 2.6-A resolution. The tRNase Z has a four-layer alphabeta/betaalpha sandwich fold, which is classified as a metallo-beta-lactamase fold, and forms a dimer. The active site is located at one edge of the beta-sandwich and is composed of conserved motifs. Based on the structure, we constructed a docking model with the tRNAs that suggests how tRNase Z may recognize the substrate tRNAs. |
==About this Structure== | ==About this Structure== | ||
| - | 1WW1 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] with ZN as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Ribonuclease_Z Ribonuclease Z], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.26.11 3.1.26.11] Full crystallographic information is available from [http:// | + | 1WW1 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] with <scene name='pdbligand=ZN:'>ZN</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Ribonuclease_Z Ribonuclease Z], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.26.11 3.1.26.11] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WW1 OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Thermotoga maritima]] | [[Category: Thermotoga maritima]] | ||
[[Category: Ishii, R.]] | [[Category: Ishii, R.]] | ||
| - | [[Category: RSGI, RIKEN | + | [[Category: RSGI, RIKEN Structural Genomics/Proteomics Initiative.]] |
[[Category: Yokoyama, S.]] | [[Category: Yokoyama, S.]] | ||
[[Category: ZN]] | [[Category: ZN]] | ||
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[[Category: structural genomics]] | [[Category: structural genomics]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:48:39 2008'' |
Revision as of 13:48, 21 February 2008
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Crystal structure of tRNase Z from Thermotoga maritima
Overview
The maturation of the tRNA 3' end is catalyzed by a tRNA 3' processing endoribonuclease named tRNase Z (RNase Z or 3'-tRNase) in eukaryotes, Archaea, and some bacteria. The tRNase Z generally cuts the 3' extra sequence from the precursor tRNA after the discriminator nucleotide. In contrast, Thermotoga maritima tRNase Z cleaves the precursor tRNA precisely after the CCA sequence. In this study, we determined the crystal structure of T. maritima tRNase Z at 2.6-A resolution. The tRNase Z has a four-layer alphabeta/betaalpha sandwich fold, which is classified as a metallo-beta-lactamase fold, and forms a dimer. The active site is located at one edge of the beta-sandwich and is composed of conserved motifs. Based on the structure, we constructed a docking model with the tRNAs that suggests how tRNase Z may recognize the substrate tRNAs.
About this Structure
1WW1 is a Single protein structure of sequence from Thermotoga maritima with as ligand. Active as Ribonuclease Z, with EC number 3.1.26.11 Full crystallographic information is available from OCA.
Reference
Crystal structure of the tRNA 3' processing endoribonuclease tRNase Z from Thermotoga maritima., Ishii R, Minagawa A, Takaku H, Takagi M, Nashimoto M, Yokoyama S, J Biol Chem. 2005 Apr 8;280(14):14138-44. Epub 2005 Jan 27. PMID:15701599
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