The identification of transcription factor binding sites is difficult since they are only a small number of nucleotides in size, resulting in large numbers of false positives and false negatives in current approaches. Computational methods to reduce false positives are to look for over-representation of transcription factor binding sites in a set of similarly regulated promoters or to look for conservation in orthologous promoter alignments.
Pubmed ID: 19036135 RIS Download
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Unix-like operating system that is free software. GNU (more precisely, GNU/Linux systems) are entirely free software. The GNU Project was launched in 1984 to develop the GNU system. A Unix-like operating system is a software collection of applications, libraries, and developer tools, plus a program to allocate resources and talk to the hardware, known as a kernel. The Hurd, GNU''s own kernel, is some way from being ready for daily use. Thus, GNU is typically used today with a kernel called Linux. This combination is the GNU/Linux operating system. GNU/Linux is used by millions, though many call it Linux by mistake.
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