| 货号 | 13105S |
| 反应种属 | Human/Mouse/Rat/Monkey |
| 来源宿主 | Rabbit |
| 应用 | W/ChIP |
| 目标/特异性 | WDR5 (D9E1I) Rabbit mAb recognizes endogenous levels of total WDR5 protein. |
| 使用方法 | WB(1:1000) ChIP (1:50) |
| 供应商 | CST |
| 背景 | The Set1 histone methyltransferase protein was first identified in yeast as part of the Set1/COMPASS histone methyltransferase complex, which methylates histone H3 at Lys4 and functions as a transcriptional co-activator (1). While yeast contain only one known Set1 protein, mammals contain six Set1-related proteins: SET1A, SET1B, MLL1, MLL2, MLL3, and MLL4, all of which assemble into COMPASS-like complexes and methylate histone H3 at Lys4 (2,3). These Set1-related proteins are each found in distinct protein complexes, all of which share the common subunits WDR5, RBBP5, ASH2L, CXXC1 and DPY30, which are required for proper complex assembly and modulation of histone methyltransferase activity (2-6). MLL1 and MLL2 complexes contain the additional protein subunit, menin (6). Like yeast Set1, all six Set1-related mammalian proteins methylate histone H3 at Lys4 (2-6). MLL translocations are found in a large number of hematological malignancies, suggesting that Set1/COMPASS histone methyltransferase complexes play a critical role in leukemogenesis (6).WDR5 is a core subunit of all SET1/MLL histone methyltransferase complexes and is required for proper complex assembly and histone methyltransferase activity (7). It functions as an effector of histone H3 Lys4 methylation by recruiting SET1/MLL complexes to target loci and presenting the histone H3 amino-terminal tail for methylation (8). WDR5 contains a classical seven-bladed WD40 propeller domain with a central cavity that binds to histone H3 Arg2 when symmetrically di-methylated (H3Arg2Me2-S) by arginine methyltransferases PRMT5 and PRMT7 (8). WDR5 binding to H3Arg2Me2-S results in increased recruitment of SET1/MLL complexes and methylation of histone H3 Lys4 at gene promoters and distal regulatory sites. In contrast, asymmetric di-methylation of histone H3 Arg2 (H3Arg2Me2-A) by PRMT6 reduces WDR5 binding and results in decreased recruitment of SET1/MLL complexes and reduced histone H3 Lys4 methylation (8). Interestingly, the H3Arg2Me2-S binding pocket of WDR5 also interacts with the SET domains of SET1/MLL proteins with comparable affinity, setting up a potential competition for WDR5 binding that may act to regulate SET1/MLL recruitment and subsequent H3 Lys4 methylation (9-11). WDR5 is also a core subunit of the ATAC and MOF-NSL histone acetyltransferase complexes and the CHD8 chromatin-remodeling complex (12-14). |
| 存放说明 | -20C |
| 计算分子量 | 37 |
Western blot analysis of extracts from various cell lines using WDR5 (D9E1I) Rabbit mAb.Western blot方法检测不同细胞系的提取物，使用的抗体为WDR5 (D9E1I) Rabbit mAb。 | |
Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 106 NCCIT cells and either 10 μl of WDR5 (D9E1I) Rabbit mAb or 2 μl of Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using human nanog promoter primers, SimpleChIP® Human Oct-4 Promoter Primers #4641, and SimpleChIP® Human α Satellite Repeat Primers #4486. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.使用SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003 对4 x 106 NCCIT细胞中交联过的染色质进行染色质免疫沉淀，所用抗体为10 µl WDR5 (D9E1I) Rabbit mAb或2 µl Normal Rabbit IgG #2729，富集到的DNA经过实时PCR定量，所使用产品为human nanog promoter primers, SimpleChIP® Human Oct-4 Promoter Primers #4641以及 SimpleChIP® Human α Satellite Repeat Primers #4486。每个样品中免疫沉淀得到的DNA量由与input chromatin( 相当于1)的相对信号值来表示。 |
