View source for 5b6b


==Complex of LATS1 and phosphomimetic MOB1b==
<StructureSection load='5b6b' size='340' side='right'caption='[[5b6b]], [[Resolution|resolution]] 3.54&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5b6b]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5B6B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5B6B FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.536&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=5b6b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5b6b OCA], [https://pdbe.org/5b6b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5b6b RCSB], [https://www.ebi.ac.uk/pdbsum/5b6b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5b6b ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MOB1B_MOUSE MOB1B_MOUSE] Activator of LATS1/2 in the Hippo signaling pathway which plays a pivotal role in organ size control and tumor suppression by restricting proliferation and promoting apoptosis. The core of this pathway is composed of a kinase cascade wherein STK3/MST2 and STK4/MST1, in complex with its regulatory protein SAV1, phosphorylates and activates LATS1/2 in complex with its regulatory protein MOB1, which in turn phosphorylates and inactivates YAP1 oncoprotein and WWTR1/TAZ. Phosphorylation of YAP1 by LATS1/2 inhibits its translocation into the nucleus to regulate cellular genes important for cell proliferation, cell death, and cell migration. Stimulates the kinase activity of STK38L (By similarity).
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== Publication Abstract from PubMed ==
MOB1 protein is a key regulator of large tumor suppressor 1/2 (LATS1/2) kinases in the Hippo pathway. MOB1 is present in an autoinhibited form and is activated by MST1/2-mediated phosphorylation, although the precise mechanisms responsible for autoinhibition and activation are unknown due to lack of an autoinhibited MOB1 structure. Here, we report on the crystal structure of full-length MOB1B in the autoinhibited form and a complex between the MOB1B core domain and the N-terminal regulation (NTR) domain of LATS1. The structure of full-length MOB1B shows that the N-terminal extension forms a short beta-strand, the SN strand, followed by a long conformationally flexible positively-charged linker and alpha-helix, the Switch helix, which blocks the LATS1 binding surface of MOB1B. The Switch helix is stabilized by beta-sheet formation of the SN strand with the S2 strand of the MOB1 core domain. Phosphorylation of Thr12 and Thr35 residues structurally accelerates dissociation of the Switch helix from the LATS1-binding surface by the "pull-the-string" mechanism, thereby enabling LATS1 binding.

Structural basis for autoinhibition and its relief of MOB1 in the Hippo pathway.,Kim SY, Tachioka Y, Mori T, Hakoshima T Sci Rep. 2016 Jun 23;6:28488. doi: 10.1038/srep28488. PMID:27335147<ref>PMID:27335147</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5b6b" style="background-color:#fffaf0;"></div>

==See Also==
*[[Serine/threonine protein kinase 3D structures|Serine/threonine protein kinase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Hakoshima T]]
[[Category: KIM S-Y]]
[[Category: Mori T]]
[[Category: Tachioka Y]]