Volume 3 Issue 2, July 1993: 165-171
ORIGINAL ARTICLES
The characteristics of the spindle fiber attachments (SFAs) enriched fraction from mouse nuclei*
Zumei Ni, Ning Yi, Yan Zhou and Luji Shi (L. C. Sze)
Shanghai Institute of Cell Biology, Academia Sinica, 320 Yoyang Road, Shanghai 200031, China.
Correspondence:
The characteristics of the particulate mouse centromere enriched fraction from isolated nuclei obtained in our laboratory were investigated by indirect immunofluorescence, test of the activity of microtubule organizing center(MTOC), SDS-PAGE, and fluorescence in situ hybridization. Most of the particles of the fraction are complexes of DNA and kinetochore proteins and show MTOC activity. The DNA isolated from the fraction can hybridize with DNA in the regions of the primary constrictions of all chromosomes of ascites cells. The kinetochore proteins isolated from the fraction are mainly those with molecular weight of 55 KD and 59 KD. Results suggested that the fraction obtained is a centromere enriched nuclear fraction as indicated in our previous report
Cell Res 3: 165-171; doi:10.1038/cr.1993.18
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