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4umg

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Revision as of 05:05, 5 August 2016

Crystal structure of the Lin-41 filamin domain

Structural highlights

4umg is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LIN41_CAEEL] Heterochronic protein which acts downstream let-7 in temporal patterning. Represses lin-29 during late larval stages, which prevents terminal differentiation of hypodermal seam cells and promotes their division. Also governs the timing and extent of male tail tip morphogenesis.^[1] ^[2]

Publication Abstract from PubMed

The mechanisms controlling cell fate determination and reprogramming are fundamental for development. A profound reprogramming, allowing the production of pluripotent cells in early embryos, takes place during the oocyte-to-embryo transition. To understand how the oocyte reprogramming potential is controlled, we sought Caenorhabditis elegans mutants in which embryonic transcription is initiated precociously in germ cells. This screen identified LIN-41, a TRIM-NHL protein and a component of the somatic heterochronic pathway, as a temporal regulator of pluripotency in the germline. We found that LIN-41 is expressed in the cytoplasm of developing oocytes, which, in lin-41 mutants, acquire pluripotent characteristics of embryonic cells and form teratomas. To understand LIN-41 function in the germline, we conducted structure-function studies. In contrast to other TRIM-NHL proteins, we found that LIN-41 is unlikely to function as an E3 ubiquitin ligase. Similar to other TRIM-NHL proteins, the somatic function of LIN-41 is thought to involve mRNA regulation. Surprisingly, we found that mutations predicted to disrupt the association of LIN-41 with mRNA, which otherwise compromise LIN-41 function in the heterochronic pathway in the soma, have only minor effects in the germline. Similarly, LIN-41-mediated repression of a key somatic mRNA target is dispensable for the germline function. Thus, LIN-41 appears to function in the germline and the soma via different molecular mechanisms. These studies provide the first insight into the mechanism inhibiting the onset of embryonic differentiation in developing oocytes, which is required to ensure a successful transition between generations.

The TRIM-NHL Protein LIN-41 Controls the Onset of Developmental Plasticity in Caenorhabditis elegans.,Tocchini C, Keusch JJ, Miller SB, Finger S, Gut H, Stadler MB, Ciosk R PLoS Genet. 2014 Aug 28;10(8):e1004533. doi: 10.1371/journal.pgen.1004533., eCollection 2014 Aug. PMID:25167051^[3]

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

References

↑ Slack FJ, Basson M, Liu Z, Ambros V, Horvitz HR, Ruvkun G. The lin-41 RBCC gene acts in the C. elegans heterochronic pathway between the let-7 regulatory RNA and the LIN-29 transcription factor. Mol Cell. 2000 Apr;5(4):659-69. PMID:10882102
↑ Del Rio-Albrechtsen T, Kiontke K, Chiou SY, Fitch DH. Novel gain-of-function alleles demonstrate a role for the heterochronic gene lin-41 in C. elegans male tail tip morphogenesis. Dev Biol. 2006 Sep 1;297(1):74-86. Epub 2006 May 6. PMID:16806150 doi:http://dx.doi.org/10.1016/j.ydbio.2006.04.472
↑ Tocchini C, Keusch JJ, Miller SB, Finger S, Gut H, Stadler MB, Ciosk R. The TRIM-NHL Protein LIN-41 Controls the Onset of Developmental Plasticity in Caenorhabditis elegans. PLoS Genet. 2014 Aug 28;10(8):e1004533. doi: 10.1371/journal.pgen.1004533., eCollection 2014 Aug. PMID:25167051 doi:http://dx.doi.org/10.1371/journal.pgen.1004533

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/4umg"

@@ Line 1: / Line 1: @@
 ==Crystal structure of the Lin-41 filamin domain==
 <StructureSection load='4umg' size='340' side='right' caption='[[4umg]], [[Resolution|resolution]] 1.68&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4umg]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4UMG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4UMG 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=4umg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4umg OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4umg RCSB], [http://www.ebi.ac.uk/pdbsum/4umg 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=4umg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4umg OCA], [http://pdbe.org/4umg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4umg RCSB], [http://www.ebi.ac.uk/pdbsum/4umg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4umg ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 16: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4umg" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4umg

From Proteopedia

Revision as of 05:05, 5 August 2016

Crystal structure of the Lin-41 filamin domain

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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