Stable nucleosome positioning and complete repression by the yeast alpha 2 repressor are disrupted by amino-terminal mutations in histone H4.
Stable nucleosome positioning and complete repression by the yeast alpha 2 repressor are disrupted by amino-terminal mutations in histone H4.
复制标题
组蛋白 H4 的氨基末端突变会破坏稳定的核小体定位和酵母 α2 阻遏物的完全抑制。
作者:
S. Roth;M. Shimizu;L. Johnson;M. Grunstein;R. Simpson
Nucleosomes are positioned in the presence of the yeast repressor alpha 2 in minichromosomes containing the alpha 2 operator and on the promoters of a-cell-specific genes regulated by alpha 2. To investigate the possibility that alpha 2 directs nucleosome position through an interaction with a component of the core particle, we analyzed chromatin structures adjacent to the operator in alpha cells containing mutations in the amino-terminal region of histone H4. Deletion or point mutation of specific amino acids in histone H4 altered the location and/or stability of nucleosomes adjacent to the alpha 2 operator. These changes in chromatin structure were accompanied by partial derepression of a beta-galactosidase reporter construct under alpha 2 control, even though alpha 2 remained bound to its operator sequence. Our data suggest that complete repression by alpha 2 requires stable positioning of nucleosomes in promoter regions and this positioning involves the conserved amino-terminal region of histone H4.
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影响因子:
3.3
作者:
M. Carlson;B. Osmond;L. Neigeborn;D. Botstein
通讯作者:
M. Carlson;B. Osmond;L. Neigeborn;D. Botstein
影响因子:
14.9
作者:
KORNBERG, RD;STRYER, L
通讯作者:
STRYER, L
影响因子:
5.6
作者:
PASSMORE, S;MAINE, GT;TYE, BK
通讯作者:
TYE, BK
影响因子:
14.9
作者:
Axelrod,JD;Majors,J
通讯作者:
Majors,J
DOI:
10.1073/pnas.87.16.6286
发表时间:
1990-08-01
影响因子:
11.1
作者:
JOHNSON, LM;KAYNE, PS;GRUNSTEIN, M
通讯作者:
GRUNSTEIN, M