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DNA Methylation Mechanism
In DNA, methylation usually occurs in the CpG islands, a CG rich region, upstream of the promoter region. The letter "p" here signifies that the C and G are connected by a phosphodiester bond. In humans, DNA methylation is carried out by a group of enzymes called DNA methyltransferases. These enzymes not only determine the DNA methylation patterns during the early development, but are also responsible for copying these patterns to the strands generated from DNA replication.
In addition to locating the primer anywhere on the gene of interest, Beacon Designer can design primers across exon-exon or exon-intron junctions. These primers designed across exon intron junctions help selective amplification of cDNA from gDNA.
Beacon Designer为突变检测提供了一个综合解决方案。高分辨率熔解分析(HRMA)是一种比基于**腺的基因型分析更具有成本效益的方法。该程序使用专有算法,可以设计出检测突变的佳引物。
高分辨率的熔解分析引物被设计成侧翼感兴趣突变,产生具有可检测的熔融温度变化的短可能的扩增子。引物设计避免了模板二级结构,保证有效引物延伸。设计的HRMA引物可以在NCBI的核苷酸数据库中进行搜索,以检验其特。还可以对预先设计或发布的引物进行分析。
Molecular Beacons
为NASBA检验设计或评估标准的分子信标或分子信标。NASBA是一种引物依赖技术,可用于在同一温度下单个混合物中连续扩增核酸。现在您可以为单分子模板或多重反应的分子信标设计NASBA检验。
Prediction of CpG islands
Beacon Designer™ predicts CpG islands in accordance with Gardiner-Garden and Frommer guidelines. load the sequence in Beacon Designer™ and the program will automatically predict these regions. You can also specify the CpG regions manually in a sequence. The CpG islands are displayed in green in the Sequence view tab and the regions that are rich in GC are displayed in red.
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