Analysis of centromere identity and structure in human cells
Analysis of centromere identity and structure in human cells
批准号:
7966218
负责人:
YAMINI P DALAL
金额:
$31.78万
依托单位国家:
美国
项目类别:
财政年份:
--
资助国家:
美国
项目状态:
未结题
起止时间:
至
关键词:
Atomic Force MicroscopyBindingCell CycleCell Cycle RegulationCellsCentromereCharacteristicsChromatinChromatin StructureChromosomesComplexEpigenetic ProcessFoundationsGenomeGoalsHela CellsHistone H3HistonesHumanKinetochoresLocationMass Spectrum AnalysisMeasurementMediatingMitosisMitoticPost-Translational Protein ProcessingProteinsRecruitment ActivityRestSpectrophotometryStructureVariantdaughter cell
中文摘要
我们利用染色质IP、原子力显微镜测量和质谱分光光度法分析了HeLa细胞中含有CENPA的人着丝染色质。到目前为止,我们已经确定了CENPA染色质结构是独特的,并且似乎与包装基因组的其余染色质具有根本不同的特征。我们还从细胞周期的不同点纯化了CENPA组蛋白,我们计划通过质谱分析来了解这种蛋白的表观遗传修饰如何帮助将其限制在着丝粒上,并调节其仅在细胞周期的特定点和位置可用
英文摘要
We have analyzed human centromeric chromatin containing CENPA from HeLa cells in culture using Chromatin IP followed by atomic force microscopy measurements and mass spectrophotometry. Thus far, we have identified that the CENPA chromatin structure is uniquely organized and appears to have fundamentally different characteristics from the rest of the chromatin which packages the genome. We have also purified CENPA histone from different points of the cell cycle that we plan to analyze by mass spectrometry to understand how epigenetic modifications of this protein may help restrict it to the centromere, and regulate it is only available at a particular point and location in the cell cycle
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