2vpv

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Dimerization Domain of Mif2pDimerization Domain of Mif2p

Structural highlights

2vpv is a 2 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.7Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CENPC_YEAST Component of the kinetochore, a multiprotein complex that assembles on centromeric DNA and attaches chromosomes to spindle microtubules, mediating chromosome segregation and sister chromatid segregation during meiosis and mitosis. Component of the inner kinetochore constitutive centromere-associated network (CCAN), which serves as a structural platform for outer kinetochore assembly (PubMed:8408221, PubMed:7579695, PubMed:22561346).[1] [2] [3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Mif2p is the budding-yeast orthologue of the mammalian centromere-binding protein CENP-C. We have mapped domains of Saccharomyces cerevisiae Mif2p and studied the phenotyptic consequences of their deletion. Using chromatin immunoprecipitation (ChIP) and electrophoretic mobility shift assays, we have further shown that Mif2p binds in the CDEIII region of the budding-yeast centromere, probably in close spatial association with Ndc10p. Moreover, ChIP experiments show that Mif2p recruits to yeast kinetochores a substantial subset of inner and outer kinetochore proteins, but not the Ndc80 or Spc105 complexes. We have determined the crystal structure of the C-terminal, dimerization domain of Mif2p. It has a "cupin" fold, extremely similar both in polypeptide chain conformation and in dimer geometry to the dimerization domain of a bacterial transcription factor. The Mif2p dimer seems to be part of an enhanceosome-like structure that nucleates kinetochore assembly in budding yeast.

Structural and functional dissection of Mif2p, a conserved DNA-binding kinetochore protein.,Cohen RL, Espelin CW, De Wulf P, Sorger PK, Harrison SC, Simons KT Mol Biol Cell. 2008 Oct;19(10):4480-91. Epub 2008 Aug 13. PMID:18701705[4]

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

References

  1. ↑ Schleiffer A, Maier M, Litos G, Lampert F, Hornung P, Mechtler K, Westermann S. CENP-T proteins are conserved centromere receptors of the Ndc80 complex. Nat Cell Biol. 2012 May 6;14(6):604-13. doi: 10.1038/ncb2493. PMID:22561346 doi:http://dx.doi.org/10.1038/ncb2493
  2. ↑ Meluh PB, Koshland D. Evidence that the MIF2 gene of Saccharomyces cerevisiae encodes a centromere protein with homology to the mammalian centromere protein CENP-C. Mol Biol Cell. 1995 Jul;6(7):793-807. doi: 10.1091/mbc.6.7.793. PMID:7579695 doi:http://dx.doi.org/10.1091/mbc.6.7.793
  3. ↑ Brown MT, Goetsch L, Hartwell LH. MIF2 is required for mitotic spindle integrity during anaphase spindle elongation in Saccharomyces cerevisiae. J Cell Biol. 1993 Oct;123(2):387-403. PMID:8408221
  4. ↑ Cohen RL, Espelin CW, De Wulf P, Sorger PK, Harrison SC, Simons KT. Structural and functional dissection of Mif2p, a conserved DNA-binding kinetochore protein. Mol Biol Cell. 2008 Oct;19(10):4480-91. Epub 2008 Aug 13. PMID:18701705 doi:10.1091/mbc.E08-03-0297

2vpv, resolution 2.70Å

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