1l9a
From Proteopedia
(New page: 200px<br /> <applet load="1l9a" size="450" color="white" frame="true" align="right" spinBox="true" caption="1l9a, resolution 2.90Å" /> '''CRYSTAL STRUCTURE O...) |
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| - | [[Image:1l9a.gif|left|200px]]<br /> | + | [[Image:1l9a.gif|left|200px]]<br /><applet load="1l9a" size="350" color="white" frame="true" align="right" spinBox="true" |
| - | <applet load="1l9a" size=" | + | |
caption="1l9a, resolution 2.90Å" /> | caption="1l9a, resolution 2.90Å" /> | ||
'''CRYSTAL STRUCTURE OF SRP19 IN COMPLEX WITH THE S DOMAIN OF SIGNAL RECOGNITION PARTICLE RNA'''<br /> | '''CRYSTAL STRUCTURE OF SRP19 IN COMPLEX WITH THE S DOMAIN OF SIGNAL RECOGNITION PARTICLE RNA'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The signal recognition particle (SRP) is a ribonucleoprotein particle | + | The signal recognition particle (SRP) is a ribonucleoprotein particle involved in GTP-dependent translocation of secretory proteins across membranes. In Archaea and Eukarya, SRP19 binds to 7SL RNA and promotes the incorporation of SRP54, which contains the binding sites for GTP, the signal peptide, and the membrane-bound SRP receptor. We have determined the crystal structure of Methanococcus jannaschii SRP19 bound to the S domain of human 7SL RNA at 2.9 A resolution. SRP19 clamps the tetraloops of two branched helices (helices 6 and 8) and allows them to interact side by side. Helix 6 acts as a splint for helix 8 and partially preorganizes the binding site for SRP54 in helix 8, thereby facilitating the binding of SRP54 in assembly. |
==About this Structure== | ==About this Structure== | ||
| - | 1L9A is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii] with MG and MMC as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http:// | + | 1L9A is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii] with <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=MMC:'>MMC</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L9A OCA]. |
==Reference== | ==Reference== | ||
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[[Category: tetraloop]] | [[Category: tetraloop]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:42:42 2008'' |
Revision as of 11:42, 21 February 2008
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CRYSTAL STRUCTURE OF SRP19 IN COMPLEX WITH THE S DOMAIN OF SIGNAL RECOGNITION PARTICLE RNA
Overview
The signal recognition particle (SRP) is a ribonucleoprotein particle involved in GTP-dependent translocation of secretory proteins across membranes. In Archaea and Eukarya, SRP19 binds to 7SL RNA and promotes the incorporation of SRP54, which contains the binding sites for GTP, the signal peptide, and the membrane-bound SRP receptor. We have determined the crystal structure of Methanococcus jannaschii SRP19 bound to the S domain of human 7SL RNA at 2.9 A resolution. SRP19 clamps the tetraloops of two branched helices (helices 6 and 8) and allows them to interact side by side. Helix 6 acts as a splint for helix 8 and partially preorganizes the binding site for SRP54 in helix 8, thereby facilitating the binding of SRP54 in assembly.
About this Structure
1L9A is a Protein complex structure of sequences from Methanocaldococcus jannaschii with and as ligands. Full crystallographic information is available from OCA.
Reference
Crystal structure of SRP19 in complex with the S domain of SRP RNA and its implication for the assembly of the signal recognition particle., Oubridge C, Kuglstatter A, Jovine L, Nagai K, Mol Cell. 2002 Jun;9(6):1251-61. PMID:12086622
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