5wi4

From Proteopedia

(Difference between revisions)

Revision as of 08:52, 30 September 2020

CRYSTAL STRUCTURE OF DYNLT1/TCTEX-1 IN COMPLEX WITH ARHGEF2

Structural highlights

5wi4 is a 3 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[DYLT1_MOUSE] Acts as one of several non-catalytic accessory components of the cytoplasmic dynein 1 complex that are thought to be involved in linking dynein to cargos and to adapter proteins that regulate dynein function. Cytoplasmic dynein 1 acts as a motor for the intracellular retrograde motility of vesicles and organelles along microtubules. Binds to transport cargos and is involved in apical cargo transport such as rhodopsin-bearing vesicles in polarized epithelia (By similarity). May also be a accessory component of axonemal dynein. Plays an important role in male germ cell development and function. Candidate for involvement in male sterility.^[1] Plays a role in neuronal morphogenesis; the function is independent of cytoplasmic dynein and seems to be coupled to regulation of the actin cytoskeleton by enhancing Rac1 activity. The function in neurogenesis may be regulated by association with a G-protein beta-gamma dimer. May function as a receptor-independent activator of heterotrimeric G-protein signaling; the activation appears to be independent of a nucleotide exchange. Plays a role in regulating neurogenesis; inhibits the genesis of neurons from precursor cells during cortical development presumably by antagonizing ARHGEF2. Unrelated to the role in retrograde microtubule-associated movement may play a role in the dimerization of cytoplasmic proteins/domains such as for ACVR2B. Binds to the cytoplasmic domain of ACVR2B and, in vitro, inhibits ACVR2B signaling. Involved in the regulation of mitotic spindle orientation.^[2] ^[3]

Publication Abstract from PubMed

The PAR-1-MARK pathway controls cell polarity through the phosphorylation of microtubule-associated proteins. Rho-Rac guanine nucleotide exchange factor 2 (ARHGEF2), which activates Ras homolog family member A (RHOA), is anchored to the microtubule network and sequestered in an inhibited state through binding to dynein light chain Tctex-1 type 1 (DYNLT1). We showed in mammalian cells that liver kinase B1 (LKB1) activated the microtubule affinity-regulating kinase 3 (MARK3), which in turn phosphorylated ARHGEF2 at Ser151 This modification disrupted the interaction between ARHGEF2 and DYNLT1 by generating a 14-3-3 binding site in ARHGEF2, thus causing ARHGEF2 to dissociate from microtubules. Phosphorylation of ARHGEF2 by MARK3 stimulated RHOA activation and the formation of stress fibers and focal adhesions, and was required for organized cellular architecture in three-dimensional culture. Protein phosphatase 2A (PP2A) dephosphorylated Ser151 in ARHGEF2 to restore the inhibited state. Thus, we have identified a regulatory switch controlled by MARK3 that couples microtubules to the actin cytoskeleton to establish epithelial cell polarity through ARHGEF2.

MARK3-mediated phosphorylation of ARHGEF2 couples microtubules to the actin cytoskeleton to establish cell polarity.,Sandi MJ, Marshall CB, Balan M, Coyaud E, Zhou M, Monson DM, Ishiyama N, Chandrakumar AA, La Rose J, Couzens AL, Gingras AC, Raught B, Xu W, Ikura M, Morrison DK, Rottapel R Sci Signal. 2017 Oct 31;10(503). pii: eaan3286. doi: 10.1126/scisignal.aan3286. PMID:29089450^[4]

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

References

↑ Harrison A, Olds-Clarke P, King SM. Identification of the t complex-encoded cytoplasmic dynein light chain tctex1 in inner arm I1 supports the involvement of flagellar dyneins in meiotic drive. J Cell Biol. 1998 Mar 9;140(5):1137-47. PMID:9490726
↑ Takesono A, Cismowski MJ, Ribas C, Bernard M, Chung P, Hazard S 3rd, Duzic E, Lanier SM. Receptor-independent activators of heterotrimeric G-protein signaling pathways. J Biol Chem. 1999 Nov 19;274(47):33202-5. PMID:10559191
↑ Gauthier-Fisher A, Lin DC, Greeve M, Kaplan DR, Rottapel R, Miller FD. Lfc and Tctex-1 regulate the genesis of neurons from cortical precursor cells. Nat Neurosci. 2009 Jun;12(6):735-44. doi: 10.1038/nn.2339. Epub 2009 May 17. PMID:19448628 doi:http://dx.doi.org/10.1038/nn.2339
↑ Sandi MJ, Marshall CB, Balan M, Coyaud E, Zhou M, Monson DM, Ishiyama N, Chandrakumar AA, La Rose J, Couzens AL, Gingras AC, Raught B, Xu W, Ikura M, Morrison DK, Rottapel R. MARK3-mediated phosphorylation of ARHGEF2 couples microtubules to the actin cytoskeleton to establish cell polarity. Sci Signal. 2017 Oct 31;10(503). pii: eaan3286. doi: 10.1126/scisignal.aan3286. PMID:29089450 doi:http://dx.doi.org/10.1126/scisignal.aan3286

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/5wi4"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE OF DYNLT1/TCTEX-1 IN COMPLEX WITH ARHGEF2==
-<StructureSection load='5wi4' size='340' side='right' caption='[[5wi4]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
+<StructureSection load='5wi4' size='340' side='right'caption='[[5wi4]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5wi4]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5WI4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5WI4 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5wi4]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5WI4 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5WI4 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5wi4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5wi4 OCA], [http://pdbe.org/5wi4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5wi4 RCSB], [http://www.ebi.ac.uk/pdbsum/5wi4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5wi4 ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5wi4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5wi4 OCA], [http://pdbe.org/5wi4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5wi4 RCSB], [http://www.ebi.ac.uk/pdbsum/5wi4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5wi4 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 18: @@
 </div>
 <div class="pdbe-citations 5wi4" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Dynein 3D structures|Dynein 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Balan, M]]
 [[Category: Ikura, M]]

5wi4

From Proteopedia

Revision as of 08:52, 30 September 2020

CRYSTAL STRUCTURE OF DYNLT1/TCTEX-1 IN COMPLEX WITH ARHGEF2

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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