Current SEM techniques for de‐ and re‐construction of centromeres to determine 3D CENH3 distribution in barley mitotic chromosomes
Current SEM techniques for de‐ and re‐construction of centromeres to determine 3D CENH3 distribution in barley mitotic chromosomes
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当前 SEM 技术用于着丝粒的脱除和重建,以确定大麦有丝分裂染色体中的 3D CENH3 分布
DOI:
10.1111/j.1365-2818.2011.03592.x
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发表时间:
2012
影响因子:
2
通讯作者:
Wanner
中科院分区:
文献类型:
--
作者:
Schroeder-Reiter;Houben;Wanner
Combined light microscopic (LM) and field emission scanning electron microscopic (FESEM) techniques with FluoroNanogold labelling allowed quantification and high resolution analysis of 3D distribution of the centromere‐specific histone H3 variant CENH3 in barley mitotic chromosomes. Chromosomes were investigated with fluorescence LM, conventional FESEM, low‐voltage FESEM and combined FIB/FESEM techniques for unprecedented comprehensive analysis to determine chromatin distribution patterns in the centromere. Using data from FIB/FESEM sectioning of centromeric regions of chromosomes, it was possible to render 3D reconstruction of the CENH3 distribution with highest resolution achieved to date. Complementary data derived from each approach show that CENH3 localizes not only to the primary constriction, but also in the pericentric regions and is distributed exclusively in the interior, rather than on the surface, of the centromere. This is relevant for understanding kinetochore assembly and digresses from current models of centromere structure. We emphasize here this broad microscopic approach, focusing on technical aspects of combined FESEM techniques, for which advantages and limitations are discussed, providing a relevant example—in the field of centromeric research—for application to investigations of other subcellular biological structures.
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影响因子:
3
作者:
Schroeder-Reiter, Elizabeth;Perez-Willard, Fabian;Wanner, Gerhard
通讯作者:
Wanner, Gerhard
影响因子:
2.6
作者:
Manzanero, S;Rutten, T;Houben, A
通讯作者:
Houben, A
影响因子:
2.6
作者:
E. Schroeder;Andreas Houben;Gerhard Wanner
通讯作者:
Gerhard Wanner
影响因子:
7.8
作者:
N. Kireeva;M. Lakonishok;I. Kireev;T. Hirano;A. Belmont
通讯作者:
A. Belmont
影响因子:
64.8
作者:
D. De
通讯作者:
D. De