3t79 is a 6 chain structure with sequence from Kluyveromyces lactis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Kinetochores link centromeric DNA to spindle microtubules and ensure faithful chromosome segregation during mitosis. In point-centromere yeasts, the CBF3 complex Skp1-Ctf13-(Cep3)(2)-(Ndc10)(2) recognizes a conserved centromeric DNA element through contacts made by Cep3 and Ndc10. We describe here the five-domain organization of Kluyveromyces lactis Ndc10 and the structure at 2.8 A resolution of domains I-II (residues 1-402) bound to DNA. The structure resembles tyrosine DNA recombinases, although it lacks both endonuclease and ligase activities. Structural and biochemical data demonstrate that each subunit of the Ndc10 dimer binds a separate fragment of DNA, suggesting that Ndc10 stabilizes a DNA loop at the centromere. We describe in vitro association experiments showing that specific domains of Ndc10 interact with each of the known inner-kinetochore proteins or protein complexes in budding yeast. We propose that Ndc10 provides a central platform for inner-kinetochore assembly.
Ndc10 is a platform for inner kinetochore assembly in budding yeast.,Cho US, Harrison SC Nat Struct Mol Biol. 2011 Dec 4. doi: 10.1038/nsmb.2178. PMID:22139014[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
↑ Cho US, Harrison SC. Ndc10 is a platform for inner kinetochore assembly in budding yeast. Nat Struct Mol Biol. 2011 Dec 4. doi: 10.1038/nsmb.2178. PMID:22139014 doi:10.1038/nsmb.2178
