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蛋白去乙酰化酶(histone deacetylase,HDAC)是一類蛋白酶,對染色體的結構修飾和基因表達調控發揮著重要的作用。在癌細胞中,HDAC的過度表達導致乙酰化作用的增強,通過恢復組蛋白正電荷, 從而增加DNA與組蛋白之間的引力, 使松弛的核小體變得十分緊密, 不利于特定基因的表達, 包括一些腫瘤抑制基因。
產品描述:
蛋白去乙酰化酶(histone deacetylase,HDAC)是一類蛋白酶,對染色體的結構修飾和基因表達調控發揮著重要的作用。在癌細胞中,HDAC的過度表達導致乙酰化作用的增強,通過恢復組蛋白正電荷, 從而增加DNA與組蛋白之間的引力, 使松弛的核小體變得十分緊密, 不利于特定基因的表達, 包括一些腫瘤抑制基因。組蛋白去乙酰化酶抑制劑(histone deacetylase inhibitors,HDACi)則可通過提高染色質特定區域組蛋白乙酰化,從而調控細胞凋亡及分化相關蛋白的表達和穩定性,誘導細胞凋亡及分化,成為一類新的抗腫瘤藥物。
產品性能:
Amplite HDAC檢測試劑盒提供了一種快速、便捷、靈敏的方法來檢測HDAC的活性。我們的HDAC綠色底物是一種非肽類復合物,它比其它基于肽類的HDAC底物更加穩定。我們的試劑盒可用于檢測細胞裂解液中HDAC的活性,也可以與配合抽提物或純化的酶應用于體外抑制劑的篩選。HDAC Green綠色熒光底物的長波長發射光合高激發系數,這使其在檢測中不會引起很大的干擾。HDAC活性的測定,通過檢測490nm處激發光和520nm處發射光的綠色熒光增強來實現。
英文注釋:
Renin is an enzyme that participates in the body's renin-angiotensin system (RAS) that mediates extracellular volume and arterial vasoconstriction. It regulates blood pressure and electrolyte homoeostasis. Angiotensin II constricts blood vessels leading to increased blood pressure. It also increases the secretion of ADH and aldosterone, and stimulates the hypothalamus to activate the thirst reflex. An over-active renin-angiotension system leads to vasoconstriction and retention of sodium and water. Renin has been identified to be an attractive target for the treatment of hypertension. The Amplite Renin Assay Kit provides a convenient assay for high throughput screening of renin inhibitors and renin activity using our proprietary Tide Fluor 3 (TF3)/Tide Quencher 3 (TQ3) fluorescence resonance energy transfer (FRET) peptide. In the FRET peptide, the fluorescence of TF3 is quenched by TQ3. Upon cleavage into two separate fragments by renin, the fluorescence of TF3 is recovered, and the fluorescent signal can be easily monitored by a fluorescence microplate reader at Ex/Em = 540/590 nm. This assay is about fifty fold more sensitive than an EDANS/DABCYL-based assay. With the Amplite Renin Assay Kit, we have detected as little as 1ng renin in a 100 reaction volume.
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