6ieg

From Proteopedia

(Difference between revisions)

Revision as of 08:15, 21 May 2019

Crystal structure of human MTR4

Structural highlights

6ieg is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Gene:	MTREX, DOB1, KIAA0052, MTR4, SKIV2L2 (HUMAN)
Activity:	RNA helicase, with EC number 3.6.4.13
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[MTREX_HUMAN] Component of exosome targeting complexes. Subunit of the trimeric nuclear exosome targeting (NEXT) complex, a complex that directs a subset of non-coding short-lived RNAs for exosomal degradation. Subunit of the trimeric poly(A) tail exosome targeting (PAXT) complex, a complex that directs a subset of long and polyadenylated poly(A) RNAs for exosomal degradation. The RNA exosome is fundamental for the degradation of RNA in eukaryotic nuclei. Substrate targeting is facilitated by its cofactor MTREX, which links to RNA-binding protein adapters (PubMed:27871484). May be involved in pre-mRNA splicing. Associated with the RNA exosome complex and involved in the 3'-processing of the 7S pre-RNA to the mature 5.8S rRNA.^[1] ^[2]

Publication Abstract from PubMed

The exosome functions in the degradation of diverse RNA species, yet how it is negatively regulated remains largely unknown. Here, we show that NRDE2 forms a 1:1 complex with MTR4, a nuclear exosome cofactor critical for exosome recruitment, via a conserved MTR4-interacting domain (MID). Unexpectedly, NRDE2 mainly localizes in nuclear speckles, where it inhibits MTR4 recruitment and RNA degradation, and thereby ensures efficient mRNA nuclear export. Structural and biochemical data revealed that NRDE2 interacts with MTR4's key residues, locks MTR4 in a closed conformation, and inhibits MTR4 interaction with the exosome as well as proteins important for MTR4 recruitment, such as the cap-binding complex (CBC) and ZFC3H1. Functionally, MID deletion results in the loss of self-renewal of mouse embryonic stem cells. Together, our data pinpoint NRDE2 as a nuclear exosome negative regulator that ensures mRNA stability and nuclear export.

NRDE2 negatively regulates exosome functions by inhibiting MTR4 recruitment and exosome interaction.,Wang J, Chen J, Wu G, Zhang H, Du X, Chen S, Zhang L, Wang K, Fan J, Gao S, Wu X, Zhang S, Kuai B, Zhao P, Chi B, Wang L, Li G, Wong CCL, Zhou Y, Li J, Yun C, Cheng H Genes Dev. 2019 Mar 6. pii: gad.322602.118. doi: 10.1101/gad.322602.118. PMID:30842217^[3]

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

References

↑ Schilders G, van Dijk E, Pruijn GJ. C1D and hMtr4p associate with the human exosome subunit PM/Scl-100 and are involved in pre-rRNA processing. Nucleic Acids Res. 2007;35(8):2564-72. Epub 2007 Apr 4. PMID:17412707 doi:http://dx.doi.org/10.1093/nar/gkm082
↑ Meola N, Domanski M, Karadoulama E, Chen Y, Gentil C, Pultz D, Vitting-Seerup K, Lykke-Andersen S, Andersen JS, Sandelin A, Jensen TH. Identification of a Nuclear Exosome Decay Pathway for Processed Transcripts. Mol Cell. 2016 Nov 3;64(3):520-533. doi: 10.1016/j.molcel.2016.09.025. Epub 2016 , Oct 27. PMID:27871484 doi:http://dx.doi.org/10.1016/j.molcel.2016.09.025
↑ Wang J, Chen J, Wu G, Zhang H, Du X, Chen S, Zhang L, Wang K, Fan J, Gao S, Wu X, Zhang S, Kuai B, Zhao P, Chi B, Wang L, Li G, Wong CCL, Zhou Y, Li J, Yun C, Cheng H. NRDE2 negatively regulates exosome functions by inhibiting MTR4 recruitment and exosome interaction. Genes Dev. 2019 Mar 6. pii: gad.322602.118. doi: 10.1101/gad.322602.118. PMID:30842217 doi:http://dx.doi.org/10.1101/gad.322602.118

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/6ieg"

@@ Line 3: / Line 3: @@
 <StructureSection load='6ieg' size='340' side='right'caption='[[6ieg]], [[Resolution|resolution]] 3.55&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6ieg]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6IEG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6IEG FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6ieg]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6IEG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6IEG FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MTREX, DOB1, KIAA0052, MTR4, SKIV2L2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/RNA_helicase RNA helicase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.4.13 3.6.4.13] </span></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=6ieg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ieg OCA], [http://pdbe.org/6ieg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ieg RCSB], [http://www.ebi.ac.uk/pdbsum/6ieg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ieg ProSAT]</span></td></tr>
@@ Line 23: / Line 24: @@
 __TOC__
 </StructureSection>
+[[Category: Human]]
 [[Category: Large Structures]]
 [[Category: RNA helicase]]

6ieg

From Proteopedia

Revision as of 08:15, 21 May 2019

Crystal structure of human MTR4

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox