The special location of p-H3 and p-CENP-A on heterochromatin during mitosis in MCF-7

Mol Biol Rep. 2008 Dec;35(4):657-62. doi: 10.1007/s11033-007-9136-9. Epub 2007 Oct 5.

Abstract

CENP-A locates at nucleosome as histone H3-like proteins, and is phosphorylated during mitosis. We investigated the dynamic distribution of p-CENP-A to explore the details of its function. We found that p-CENP-A was phosphorylated at late prophase, and the signal of p-CENP-A arranged at equatorial plate along with nucleosomes at metaphase, but moved to midbody at later phase of mitosis. The phosphorylation modification of CENP-A shares some characters of H3, but has different temporal patterns during mitosis. Our results suggested that the CENP-A might have similar functions as H3, but with different patterns for their different binging materials.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Autoantigens / analysis*
  • Autoantigens / metabolism
  • CHO Cells
  • Centromere Protein A
  • Chromosomal Proteins, Non-Histone / analysis*
  • Chromosomal Proteins, Non-Histone / metabolism
  • Cricetinae
  • Cricetulus
  • Fluorescent Antibody Technique
  • Heterochromatin / metabolism*
  • Histones / analysis*
  • Histones / metabolism
  • Humans
  • Metaphase
  • Microscopy, Confocal
  • Mitosis*
  • Phosphorylation
  • Serine / genetics
  • Serine / metabolism
  • Tumor Cells, Cultured

Substances

  • Autoantigens
  • CENPA protein, human
  • Centromere Protein A
  • Chromosomal Proteins, Non-Histone
  • Heterochromatin
  • Histones
  • Serine