2ihx
From Proteopedia
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| - | [[Image:2ihx.gif|left|200px]] | + | [[Image:2ihx.gif|left|200px]] |
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| - | '''Solution Structure of the Rous Sarcoma Virus Nucleocapsid Protein:uPsi RNA Packaging Signal Complex''' | + | {{Structure |
| + | |PDB= 2ihx |SIZE=350|CAPTION= <scene name='initialview01'>2ihx</scene> | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC ION'>ZN</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= GAG ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11886 Rous sarcoma virus]) | ||
| + | }} | ||
| + | |||
| + | '''Solution Structure of the Rous Sarcoma Virus Nucleocapsid Protein:uPsi RNA Packaging Signal Complex''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2IHX is a [ | + | 2IHX is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rous_sarcoma_virus Rous sarcoma virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IHX OCA]. |
==Reference== | ==Reference== | ||
| - | Solution structure of the Rous sarcoma virus nucleocapsid protein: muPsi RNA packaging signal complex., Zhou J, Bean RL, Vogt VM, Summers M, J Mol Biol. 2007 Jan 12;365(2):453-67. Epub 2006 Oct 10. PMID:[http:// | + | Solution structure of the Rous sarcoma virus nucleocapsid protein: muPsi RNA packaging signal complex., Zhou J, Bean RL, Vogt VM, Summers M, J Mol Biol. 2007 Jan 12;365(2):453-67. Epub 2006 Oct 10. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17070546 17070546] |
[[Category: Rous sarcoma virus]] | [[Category: Rous sarcoma virus]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: protein-rna complex]] | [[Category: protein-rna complex]] | ||
| - | ''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 17:29:46 2008'' |
Revision as of 15:29, 20 March 2008
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| Ligands: | |||||||
| Gene: | GAG (Rous sarcoma virus) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Solution Structure of the Rous Sarcoma Virus Nucleocapsid Protein:uPsi RNA Packaging Signal Complex
Overview
The 5'-untranslated region (5'-UTR) of retroviral genomes contains elements required for genome packaging during virus assembly. For many retroviruses, the packaging elements reside in non-contiguous segments that span most or all of the 5'-UTR. The Rous sarcoma virus (RSV) is an exception, in that its genome can be packaged efficiently by a relatively short, 82 nt segment of the 5'-UTR called muPsi. The RSV 5'-UTR also contains three translational start codons (AUG-1, AUG-2 and AUG-3) that have been controvertibly implicated in translation initiation and genome packaging, one of which (AUG-3) resides within the muPsi sequence. We demonstrated recently that muPsi is capable of binding to the cognate RSV nucleocapsid protein (NC) with high affinity (dissociation constant K(d) approximately 2 nM), and that residues of AUG-3 are essential for tight binding. We now report the solution structure of the NC:muPsi complex, determined using NMR data obtained for samples containing ((13)C,(15)N)-labeled NC and (2)H-enriched, nucleotide-specifically protonated RNAs. Upon NC binding, muPsi adopts a stable secondary structure that consists of three stem loops (SL-A, SL-B and SL-C) and an 8 bp stem (O3). Binding is mediated by the two zinc knuckle domains of NC. The N-terminal knuckle interacts with a conserved U(217)GCG tetraloop (a member of the UNCG family; N=A,U,G or C), and the C-terminal zinc knuckle binds to residues that flank SL-A, including residues of AUG-3. Mutations of critical nucleotides in these sequences compromise or abolish viral infectivity. Our studies reveal novel structural features important for NC:RNA binding, and support the hypothesis that AUG-3 is conserved for genome packaging rather than translational control.
About this Structure
2IHX is a Single protein structure of sequence from Rous sarcoma virus. Full crystallographic information is available from OCA.
Reference
Solution structure of the Rous sarcoma virus nucleocapsid protein: muPsi RNA packaging signal complex., Zhou J, Bean RL, Vogt VM, Summers M, J Mol Biol. 2007 Jan 12;365(2):453-67. Epub 2006 Oct 10. PMID:17070546
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