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
中科院分区:
文献类型:
--
作者:
S. Saccone;Albertina DE SARIOt;G. Valle;Giorgio BERNARDItt
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.
登录
查看更多内容
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
影响因子:
56.9
作者:
LICHTER, P;TANG, CJC;WARD, DC
通讯作者:
WARD, DC
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
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