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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Human centromeres and neocentromeres show identical distribution patterns of >20 functionally important kinetochore-associated proteins.

Using combined immunofluorescence and fluorescence in situ hybridization (FISH) analysis we have extensively characterized the proteins associating with two different homologue human neocentromeres at interphase and prometaphase/metaphase, and compared these directly with those found with normal human centromeres. Antisera to CENP-A, CENP-B, CENP-C, CENP-E, CENP-F, INCENP, CLIP-170, dynein, dynactin subunits p150 (Glued) and Arp1, MCAK, Tsg24, p55CDC, HZW10, HBUB1, HBUBR1, BUB3, MAD2, ERK1, 3F3/2, topoisomerase II and a murine HP1 homologue, M31, were used in immuno-fluorescence experiments in conjunction with FISH employing specific DNA probes to clearly identify neocentromeric DNA. We found that except for the total absence of CENP-B binding, neocentromeres are indistinguishable from their alpha satellite-containing counterparts in terms of protein composition and distribution. This suggests that the DNA base of a potential centromeric locus is of minimal importance in determining the overall structure of a functional kinetochore and that, once seeded, the events leading to functional kinetochore formation occur independently of primary DNA sequence.[1]

References

  1. Human centromeres and neocentromeres show identical distribution patterns of >20 functionally important kinetochore-associated proteins. Saffery, R., Irvine, D.V., Griffiths, B., Kalitsis, P., Wordeman, L., Choo, K.H. Hum. Mol. Genet. (2000) [Pubmed]
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