This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

5aox

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Current revision

Human Alu RNA retrotransposition complex in the ribosome-stalling conformation

Structural highlights

5aox is a 6 chain structure with sequence from Homo sapiens and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.04Å
Ligands:	, , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

SRP14_HUMAN Signal-recognition-particle assembly has a crucial role in targeting secretory proteins to the rough endoplasmic reticulum membrane. SRP9 together with SRP14 and the Alu portion of the SRP RNA, constitutes the elongation arrest domain of SRP. The complex of SRP9 and SRP14 is required for SRP RNA binding.

Publication Abstract from PubMed

The Alu element is the most successful human genomic parasite affecting development and causing disease. It originated as a retrotransposon during early primate evolution of the gene encoding the signal recognition particle (SRP) RNA. We defined a minimal Alu RNA sufficient for effective retrotransposition and determined a high-resolution structure of its complex with the SRP9/14 proteins. The RNA adopts a compact, closed conformation that matches the envelope of the SRP Alu domain in the ribosomal translation elongation factor-binding site. Conserved structural elements in SRP RNAs support an ancient function of the closed conformation that predates SRP9/14. Structure-based mutagenesis shows that retrotransposition requires the closed conformation of the Alu ribonucleoprotein particle and is consistent with the recognition of stalled ribosomes. We propose that ribosome stalling is a common cause for the cis-preference of the mammalian L1 retrotransposon and for the efficiency of the Alu RNA in hijacking nascent L1 reverse transcriptase.

Retrotransposition and Crystal Structure of an Alu RNP in the Ribosome-Stalling Conformation.,Ahl V, Keller H, Schmidt S, Weichenrieder O Mol Cell. 2015 Nov 11. pii: S1097-2765(15)00770-4. doi:, 10.1016/j.molcel.2015.10.003. PMID:26585389^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Ahl V, Keller H, Schmidt S, Weichenrieder O. Retrotransposition and Crystal Structure of an Alu RNP in the Ribosome-Stalling Conformation. Mol Cell. 2015 Nov 11. pii: S1097-2765(15)00770-4. doi:, 10.1016/j.molcel.2015.10.003. PMID:26585389 doi:http://dx.doi.org/10.1016/j.molcel.2015.10.003

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5aox"

Categories: Homo sapiens | Large Structures | Synthetic construct | Ahl V | Weichenrieder O

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[5aox]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5AOX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5AOX FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.04&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5aox FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5aox OCA], [https://pdbe.org/5aox PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5aox RCSB], [https://www.ebi.ac.uk/pdbsum/5aox PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5aox ProSAT]</span></td></tr>
 </table>
@@ Line 20: / Line 21: @@
 ==See Also==
-*[[Signal recognition particle protein|Signal recognition particle protein]]
+*[[Signal recognition particle 3D structures|Signal recognition particle 3D structures]]
 == References ==
 <references/>

5aox

From Proteopedia

Current revision

Human Alu RNA retrotransposition complex in the ribosome-stalling conformation

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox