5LSK image
Deposition Date 2016-09-02
Release Date 2016-11-16
Last Version Date 2024-10-16
Entry Detail
PDB ID:
5LSK
Keywords:
Title:
CRYSTAL STRUCTURE OF THE HUMAN KINETOCHORE MIS12-CENP-C COMPLEX
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Method Details:
Experimental Method:
Resolution:
3.50 Å
R-Value Free:
0.29
R-Value Work:
0.24
R-Value Observed:
0.24
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Protein MIS12 homolog
Gene (Uniprot):MIS12
Chain IDs:A
Chain Length:205
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Polyamine-modulated factor 1
Gene (Uniprot):PMF1
Chain IDs:B
Chain Length:176
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Kinetochore-associated protein DSN1 homolog
Gene (Uniprot):DSN1
Chain IDs:C (auth: D)
Chain Length:296
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Kinetochore-associated protein NSL1 homolog
Gene (Uniprot):NSL1
Chain IDs:D (auth: N)
Chain Length:206
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Centromere protein C
Gene (Uniprot):CENPC
Chain IDs:E (auth: P)
Chain Length:76
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Structure of the MIS12 Complex and Molecular Basis of Its Interaction with CENP-C at Human Kinetochores.
Cell 167 1028 1040.e15 (2016)
PMID: 27881301 DOI: 10.1016/j.cell.2016.10.005

Abstact

Kinetochores, multisubunit protein assemblies, connect chromosomes to spindle microtubules to promote chromosome segregation. The 10-subunit KMN assembly (comprising KNL1, MIS12, and NDC80 complexes, designated KNL1C, MIS12C, and NDC80C) binds microtubules and regulates mitotic checkpoint function through NDC80C and KNL1C, respectively. MIS12C, on the other hand, connects the KMN to the chromosome-proximal domain of the kinetochore through a direct interaction with CENP-C. The structural basis for this crucial bridging function of MIS12C is unknown. Here, we report crystal structures of human MIS12C associated with a fragment of CENP-C and unveil the role of Aurora B kinase in the regulation of this interaction. The structure of MIS12:CENP-C complements previously determined high-resolution structures of functional regions of NDC80C and KNL1C and allows us to build a near-complete structural model of the KMN assembly. Our work illuminates the structural organization of essential chromosome segregation machinery that is conserved in most eukaryotes.

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