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.

2mtf

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 14:31, 10 September 2015

Solution structure of the La motif of human LARP6

Structural highlights

2mtf is a 1 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[LARP6_HUMAN] Regulates the coordinated translation of type I collagen alpha-1 and alpha-2 mRNAs, CO1A1 and CO1A2. Stabilizes mRNAs through high-affinity binding of a stem-loop structure in their 5' UTR. This regulation requires VIM and MYH10 filaments, and the helicase DHX9.^[1] ^[2] ^[3]

Publication Abstract from PubMed

The La-related proteins (LARPs) form a diverse group of RNA-binding proteins characterized by the possession of a composite RNA binding unit, the La module. The La module comprises two domains, the La motif (LaM) and the RRM1, which together recognize and bind to a wide array of RNA substrates. Structural information regarding the La module is at present restricted to the prototypic La protein, which acts as an RNA chaperone binding to 3' UUUOH sequences of nascent RNA polymerase III transcripts. In contrast, LARP6 is implicated in the regulation of collagen synthesis and interacts with a specific stem-loop within the 5' UTR of the collagen mRNA. Here, we present the structure of the LaM and RRM1 of human LARP6 uncovering in both cases considerable structural variation in comparison to the equivalent domains in La and revealing an unprecedented fold for the RRM1. A mutagenic study guided by the structures revealed that RNA recognition requires synergy between the LaM and RRM1 as well as the participation of the interdomain linker, probably in realizing tandem domain configurations and dynamics required for substrate selectivity. Our study highlights a considerable complexity and plasticity in the architecture of the La module within LARPs.

Synergic interplay of the La motif, RRM1 and the interdomain linker of LARP6 in the recognition of collagen mRNA expands the RNA binding repertoire of the La module.,Martino L, Pennell S, Kelly G, Busi B, Brown P, Atkinson RA, Salisbury NJ, Ooi ZH, See KW, Smerdon SJ, Alfano C, Bui TT, Conte MR Nucleic Acids Res. 2014 Dec 8. pii: gku1287. PMID:25488812^[4]

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

References

↑ Cai L, Fritz D, Stefanovic L, Stefanovic B. Nonmuscle myosin-dependent synthesis of type I collagen. J Mol Biol. 2010 Aug 27;401(4):564-78. doi: 10.1016/j.jmb.2010.06.057. Epub 2010 , Jul 13. PMID:20603131 doi:http://dx.doi.org/10.1016/j.jmb.2010.06.057
↑ Challa AA, Stefanovic B. A novel role of vimentin filaments: binding and stabilization of collagen mRNAs. Mol Cell Biol. 2011 Sep;31(18):3773-89. doi: 10.1128/MCB.05263-11. Epub 2011 Jul , 11. PMID:21746880 doi:10.1128/MCB.05263-11
↑ Manojlovic Z, Stefanovic B. A novel role of RNA helicase A in regulation of translation of type I collagen mRNAs. RNA. 2012 Feb;18(2):321-34. doi: 10.1261/rna.030288.111. Epub 2011 Dec 21. PMID:22190748 doi:http://dx.doi.org/10.1261/rna.030288.111
↑ Martino L, Pennell S, Kelly G, Busi B, Brown P, Atkinson RA, Salisbury NJ, Ooi ZH, See KW, Smerdon SJ, Alfano C, Bui TT, Conte MR. Synergic interplay of the La motif, RRM1 and the interdomain linker of LARP6 in the recognition of collagen mRNA expands the RNA binding repertoire of the La module. Nucleic Acids Res. 2014 Dec 8. pii: gku1287. PMID:25488812 doi:http://dx.doi.org/10.1093/nar/gku1287

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2mtf"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2mtf]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MTF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MTF FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2mtf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mtf OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2mtf RCSB], [http://www.ebi.ac.uk/pdbsum/2mtf PDBsum]</span></td></tr>
+</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2mtf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mtf OCA], [http://pdbe.org/2mtf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2mtf RCSB], [http://www.ebi.ac.uk/pdbsum/2mtf PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 15: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2mtf" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

2mtf

From Proteopedia

Revision as of 14:31, 10 September 2015

Solution structure of the La motif of human LARP6

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox