The highest gene concentrations in the human genome are in telomeric bands of metaphase chromosomes.

The highest gene concentrations in the human genome are in telomeric bands of metaphase chromosomes.
复制标题

人类基因组中最高的基因浓度位于中期染色体的端粒带中。

DOI:
10.1073/pnas.89.11.4913
复制
发表时间:
1992
影响因子:
11.1
通讯作者:
Giorgio BERNARDItt
Giorgio BERNARDItt
中科院分区:
综合性期刊1区
文献类型:
--
作者:
S. Saccone;Albertina DE SARIOt;G. Valle;Giorgio BERNARDItt

文献摘要

参考文献

被引文献

相似文献

在人类中期染色体上进行了染色体原位抑制杂交,以定位G+C含量最高的人类DNA片段(仅占基因组的3.5%),该片段是通过制备平衡离心法在Cs2SO4/3,6-bis(acetatomercurimethyl)-1,4-dioxane密度梯度中分离出来的。这一组分实质上对应于等纤溶剂族H3。进行这项实验的基本原理是,到目前为止,这个等Chore家族具有最高的基因浓度,在CpG岛上的浓度最高,转录和重组活性最高,以及独特的染色质结构。原位杂交结果表明,H3等Chore家族定位于人类中期染色体的两条重合带:端粒和色霉素A3阳性的4‘,6-二氨基-2-苯基吲哚阴性带。这一结果是朝着人类核型的完整组成图谱迈出的第一步。由于等值基因家族之间的G+C梯度与基因浓度梯度平行,这样的图谱具有结构、功能和进化上的相关性。
Chromosome in situ suppression hybridization has been carried out on human metaphase chromosomes to localize the G+C-richest human DNA fraction (which only represents 3.5% of the genome), as isolated by preparative equilibrium centrifugation in Cs2SO4/3,6-bis(acetatomercurimethyl)-1,4-dioxane density gradient. This fraction essentially corresponds to isochore family H3. The rationale for carrying out this experiment is that this isochore family has, by far, the highest gene concentration, the highest concentration in CpG islands, the highest transcriptional and recombinational activity, and a distinct chromatin structure. The in situ hybridization results obtained show that the H3 isochore family is localized in two coincident sets of bands of human metaphase chromosomes: telomeric bands and chromomycin A3-positive 4',6-diamidino-2-phenylindole-negative bands. This result is the first step toward a complete compositional map of the human karyotype. Because the G+C gradient across isochore families is paralleled by a gene concentration gradient, such a map has structural, functional, and evolutionary relevance.
DOI: 10.1073/pnas.83.9.2934
发表时间: 1986-05-01
影响因子: 11.1
作者:
PINKEL, D;STRAUME, T;GRAY, JW
通讯作者: GRAY, JW
DOI: 10.1126/science.2294592
发表时间: 1990-01-05
期刊: SCIENCE
影响因子: 56.9
作者:
LICHTER, P;TANG, CJC;WARD, DC
通讯作者: WARD, DC
人类 Xq24-Xq28:酵母人工染色体作图方法。
DOI: --
发表时间: 1990
影响因子: 9.8
作者:
Wada,M;Little,RD;Abidi,F;Porta,G;Labella,T;Cooper,T;DellaValle,G;D'Urso,M;Schlessinger,D
通讯作者: Schlessinger,D
在%20原位%20杂交%20to%20细胞遗传学%20bands%20of%20酵母%20人工%20染色体%20覆盖%2050%%20of%20人类%20Xq24-Xq28%20DNA。
DOI: --
发表时间: 1991
影响因子: 9.8
作者:
Montanaro,V;Casamassimi,A;D'Urso,M;Yoon,JY;Freije,W;Schlessinger,D;Muenke,M;Nussbaum,RL;Saccone,S;Maugeri,S
通讯作者: Maugeri,S
DOI: 10.1073/pnas.85.18.6622
发表时间: 1988-09-01
影响因子: 11.1
作者:
MOYZIS, RK;BUCKINGHAM, JM;WU, JR
通讯作者: WU, JR