生物专业英语第三版蒋悟生课文翻译精华.docx,优秀文档 优秀文档 PAGE PAGE95 优秀文档 PAGE 生物专业英语第三版蒋悟生课 文翻译精炼整理 Mostofthepropertiesweassociatewithlifearepropertiesofthecytoplasm.Muchofthemassofacellconsistsofthissemifluidsubstance,whichis
Chromatin appears as a series of “beads on a string,” consisting of individual nucleosome “beads” and the linker DNA“string.” Each nucleosome consists of eight core histone proteins (usually two each of H3, H4, H2A, and H2B) (2, 6). X-ray studies suggest that histone amino ...
Histones pack the DNA into nucleosome complexes. Histone proteins can move along the DNA strand to expose a particular part of the DNA for transcription. When nucleosomes are closely placed, the gene cannot be transcribed, butt as the nucleosomes slide along the DNA, the transcription factors ca...
b. are able to bind to the chromatin structure anywhere and cause DNA within a nucleosome to be repositione What type of chromatin has genes that are likely being transcribed? At a chromosome replication fork, the lagging strand consists of ___ that are joi...
Nucleosomes are: A. Chromosomes which carry information about nuclear membranes B. A length of DNA wound onto a histone protein C. The DNA - protein structures which can leave the nucleus D. Area of the nucleus where DNA is being repaired In e...
E. the phosphate backbone to be on the inside of the DNA helix. 二、名词解释:(每题3分,共24分) 1.lagging strand 2.nucleosome 3.probe 4.internal promoter 5.termination codon 6.cAMP 7.plasmid 8.trans-acting factors 三、简答题(1,2题每题7分,3,4题每题6分,共26分) 1.简要回答DNA复制...
The basic unit of chromatin organization is the nucleosome, which consists of DNA and histone proteins. For a long time, the nucleosome structure obtained by X-ray crystallography was considered as the ultimate and main conformational state of nucleosomes; however, more and more experimental data ...
Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. This structure consists of approximately 146 bp of DNA wrapped around a nucleosome, an octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4...
This structure consists of approximately 146 bp of DNA wrapped around a nucleosome, an octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). Applications: WB Name of antibody: HIST1H3A(Ab-27) Immunogen: Peptide sequence around aa.26-30(A-R-K-S-A) ...
Centromeres are established by nucleosomes containing the histone H3 variant CENP-A. CENP-A is recruited to centromeres by the Mis18–HJURP machinery. During mitosis, CENP-A recruitment ceases, implying the necessity of CENP-A maintenance at centromeres,