2a43
From Proteopedia
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{{STRUCTURE_2a43| PDB=2a43 | SCENE= }} | {{STRUCTURE_2a43| PDB=2a43 | SCENE= }} | ||
===Crystal Structure of a Luteoviral RNA Pseudoknot and Model for a Minimal Ribosomal Frameshifting Motif=== | ===Crystal Structure of a Luteoviral RNA Pseudoknot and Model for a Minimal Ribosomal Frameshifting Motif=== | ||
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{{ABSTRACT_PUBMED_16114868}} | {{ABSTRACT_PUBMED_16114868}} | ||
==About this Structure== | ==About this Structure== | ||
| - | + | [[2a43]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A43 OCA]. | |
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[[Category: Egli, M.]] | [[Category: Egli, M.]] | ||
[[Category: Harp, J.]] | [[Category: Harp, J.]] | ||
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[[Category: Potato leaf roll virus]] | [[Category: Potato leaf roll virus]] | ||
[[Category: Pseudoknot]] | [[Category: Pseudoknot]] | ||
| - | [[Category: Rna | + | [[Category: Rna]] |
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Revision as of 12:09, 6 January 2013
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| 2a43, resolution 1.34Å () | |||||||
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| Ligands: | |||||||
| Resources: | FirstGlance, OCA, RCSB, PDBsum | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of a Luteoviral RNA Pseudoknot and Model for a Minimal Ribosomal Frameshifting Motif
To understand the role of structural elements of RNA pseudoknots in controlling the extent of -1-type ribosomal frameshifting, we determined the crystal structure of a high-efficiency frameshifting mutant of the pseudoknot from potato leaf roll virus (PLRV). Correlations of the structure with available in vitro frameshifting data for PLRV pseudoknot mutants implicate sequence and length of a stem-loop linker as modulators of frameshifting efficiency. Although the sequences and overall structures of the RNA pseudoknots from PLRV and beet western yellow virus (BWYV) are similar, nucleotide deletions in the linker and adjacent minor groove loop abolish frameshifting only with the latter. Conversely, mutant PLRV pseudoknots with up to four nucleotides deleted in this region exhibit nearly wild-type frameshifting efficiencies. The crystal structure helps rationalize the different tolerances for deletions in the PLRV and BWYV RNAs, and we have used it to build a three-dimensional model of the PRLV pseudoknot with a four-nucleotide deletion. The resulting structure defines a minimal RNA pseudoknot motif composed of 22 nucleotides capable of stimulating -1-type ribosomal frameshifts.
Crystal structure of a luteoviral RNA pseudoknot and model for a minimal ribosomal frameshifting motif., Pallan PS, Marshall WS, Harp J, Jewett FC 3rd, Wawrzak Z, Brown BA 2nd, Rich A, Egli M, Biochemistry. 2005 Aug 30;44(34):11315-22. PMID:16114868
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
2a43 is a 1 chain structure. Full crystallographic information is available from OCA.
Categories: Egli, M. | Harp, J. | II, B A.Brown. | III, F C.Jewett. | Marshall, W S. | Pallan, P S. | Rich, A. | Wawrzak, Z. | Beet western yellow virus | Bwyv | Pk | Plrv | Potato leaf roll virus | Pseudoknot | Rna
