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4nf9

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Revision as of 21:11, 11 August 2016

Structure of the Knl1/Nsl1 complex

Structural highlights

4nf9 is a 4 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Gene:	CASC5, KIAA1570, KNL1 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[CASC5_HUMAN] Autosomal recessive primary microcephaly. A chromosomal aberration involving CASC5 is associated with acute myeloblastic leukemia (AML). Translocation t(11;15)(q23;q14) with KMT2A/MLL1. May give rise to a KMT2A/MLL1-CASC5 fusion protein. The disease is caused by mutations affecting the gene represented in this entry.

Function

[CASC5_HUMAN] Performs two crucial functions during mitosis: it is essential for spindle-assembly checkpoint signaling and for correct chromosome alignment. Required for attachment of the kinetochores to the spindle microtubules. Directly links BUB1 and BUB1B to kinetochores. Part of the MIS12 complex, which may be fundamental for kinetochore formation and proper chromosome segregation during mitosis. Acts in coordination with CENPK to recruit the NDC80 complex to the outer kinetochore.^[1] ^[2] ^[3] [NSL1_HUMAN] Part of the MIS12 complex which is required for normal chromosome alignment and segregation and kinetochore formation during mitosis.^[4]

Publication Abstract from PubMed

Faithful chromosome segregation is mandatory for cell and organismal viability. Kinetochores, large protein assemblies embedded in centromeric chromatin, establish a mechanical link between chromosomes and spindle microtubules. The KMN network, a conserved 10-subunit kinetochore complex, harbors the microtubule-binding interface. RWD domains in the KMN subunits Spc24 and Spc25 mediate kinetochore targeting of the microtubule-binding subunits by interacting with the Mis12 complex, a KMN subcomplex that tethers directly onto the underlying chromatin layer. Here, we show that Knl1, a KMN subunit involved in mitotic checkpoint signaling, also contains RWD domains that bind the Mis12 complex and that mediate kinetochore targeting of Knl1. By reporting the first 3D electron microscopy structure of the KMN network, we provide a comprehensive framework to interpret how interactions of RWD-containing proteins with the Mis12 complex shape KMN network topology. Our observations unveil a regular pattern in the construction of the outer kinetochore.

Modular Assembly of RWD Domains on the Mis12 Complex Underlies Outer Kinetochore Organization.,Petrovic A, Mosalaganti S, Keller J, Mattiuzzo M, Overlack K, Krenn V, De Antoni A, Wohlgemuth S, Cecatiello V, Pasqualato S, Raunser S, Musacchio A Mol Cell. 2014 Feb 20;53(4):591-605. doi: 10.1016/j.molcel.2014.01.019. Epub 2014, Feb 13. PMID:24530301^[5]

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

References

↑ Obuse C, Iwasaki O, Kiyomitsu T, Goshima G, Toyoda Y, Yanagida M. A conserved Mis12 centromere complex is linked to heterochromatic HP1 and outer kinetochore protein Zwint-1. Nat Cell Biol. 2004 Nov;6(11):1135-41. Epub 2004 Oct 24. PMID:15502821 doi:http://dx.doi.org/10.1038/ncb1187
↑ Kiyomitsu T, Obuse C, Yanagida M. Human Blinkin/AF15q14 is required for chromosome alignment and the mitotic checkpoint through direct interaction with Bub1 and BubR1. Dev Cell. 2007 Nov;13(5):663-76. PMID:17981135 doi:http://dx.doi.org/10.1016/j.devcel.2007.09.005
↑ Cheeseman IM, Hori T, Fukagawa T, Desai A. KNL1 and the CENP-H/I/K complex coordinately direct kinetochore assembly in vertebrates. Mol Biol Cell. 2008 Feb;19(2):587-94. Epub 2007 Nov 28. PMID:18045986 doi:http://dx.doi.org/10.1091/mbc.E07-10-1051
↑ Kline SL, Cheeseman IM, Hori T, Fukagawa T, Desai A. The human Mis12 complex is required for kinetochore assembly and proper chromosome segregation. J Cell Biol. 2006 Apr 10;173(1):9-17. Epub 2006 Apr 3. PMID:16585270 doi:http://dx.doi.org/10.1083/jcb.200509158
↑ Petrovic A, Mosalaganti S, Keller J, Mattiuzzo M, Overlack K, Krenn V, De Antoni A, Wohlgemuth S, Cecatiello V, Pasqualato S, Raunser S, Musacchio A. Modular Assembly of RWD Domains on the Mis12 Complex Underlies Outer Kinetochore Organization. Mol Cell. 2014 Feb 20;53(4):591-605. doi: 10.1016/j.molcel.2014.01.019. Epub 2014, Feb 13. PMID:24530301 doi:http://dx.doi.org/10.1016/j.molcel.2014.01.019

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4nf9"

@@ Line 1: / Line 1: @@
 ==Structure of the Knl1/Nsl1 complex==
 <StructureSection load='4nf9' size='340' side='right' caption='[[4nf9]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CASC5, KIAA1570, KNL1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=4nf9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nf9 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4nf9 RCSB], [http://www.ebi.ac.uk/pdbsum/4nf9 PDBsum]</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=4nf9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nf9 OCA], [http://pdbe.org/4nf9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4nf9 RCSB], [http://www.ebi.ac.uk/pdbsum/4nf9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4nf9 ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 20: / Line 21: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4nf9" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4nf9

From Proteopedia

Revision as of 21:11, 11 August 2016

Structure of the Knl1/Nsl1 complex

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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