The CTF/NF-I group of cellular DNA binding proteins recognizes the sequence GCCAAT and is implicated in eukaryotic transcription as well as DNA replication. Molecular analysis of human CTF/NF-I complementary DNA clones reveals multiple messenger RNA species containing alternative coding regions, apparently as a result of differential splicing. Expression and functional analysis establish that individual gene products can bind to GCCAAT recognition sites and serve both as promoter-selective transcriptional activators and as initiation factors for DNA replication.
Background: PCR has the potential to detect and precisely quantify specific DNA sequences, but it is not yet often used as a fully quantitative method. A number of data collection and processing strategies have been described for the implementation of quantitative PCR. However, they can be experimentally cumbersome, their relative performances have not been evaluated systematically, and they often remain poorly validated statistically and/or experimentally. In this study, we evaluated the performance of known methods, and compared them with newly developed data processing strategies in terms of resolution, precision and robustness.
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