2qi2

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Revision as of 11:01, 23 January 2008

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spinqualitylabelsall models 2qi2, resolution 2.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

Crystal structure of the Thermoplasma acidophilum Pelota protein

Overview

The yeast protein Dom34 is a key component of no-go decay, by which mRNAs, with translational stalls are endonucleolytically cleaved and subsequently, degraded. However, the identity of the endoribonuclease is unknown., Homologs of Dom34, called Pelota, are broadly conserved in eukaryotes and, archaea. To gain insights into the structure and function of Dom34/Pelota, we have determined the structure of Pelota from Thermoplasma acidophilum, (Ta Pelota) and investigated the ribonuclease activity of Dom34/Pelota., The structure of Ta Pelota is tripartite, and its domain 1 has the, RNA-binding Sm fold. We have discovered that Ta Pelota has a ribonuclease, activity and that its domain 1 is sufficient for the catalytic activity., We also demonstrate that domain 1 of Dom34 has an endoribonuclease, activity against defined RNA substrates containing a stem loop, which, supports a direct catalytic role of yeast Dom34 in no-go mRNA decay.

About this Structure

2QI2 is a Single protein structure of sequence from Thermoplasma acidophilum. Full crystallographic information is available from OCA.

Reference

Structural and functional insights into dom34, a key component of no-go mRNA decay., Lee HH, Kim YS, Kim KH, Heo I, Kim SK, Kim O, Kim HK, Yoon JY, Kim HS, Kim do J, Lee SJ, Yoon HJ, Kim SJ, Lee BG, Song HK, Kim VN, Park CM, Suh SW, Mol Cell. 2007 Sep 21;27(6):938-50. PMID:17889667

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