WeederH

WeederH identifies conserved transcription factor binding sites (TFBS) within genomic sequences by comparing homologous sequences using an alignment-free, relative-conservation approach.

Key Features:

• Alignment-Free Approach: Operates without sequence alignment to detect conserved sites across homologous sequences.
• Relative Measure of Conservation: Uses a relative conservation measure that assumes functional elements such as TFBS are more conserved than surrounding non-functional regions.
• Homologous Sequence Comparison: Leverages analysis of homologous gene sequences to pinpoint conserved regulatory regions.
• Application Across Genomic Regions: Detects conserved TFBS in promoters and distal regulatory regions such as enhancers.
• Independence from Binding Specificity Descriptors: Identifies sites without relying on known transcription factor binding specificity descriptors.
• Performance and Reliability: Empirical tests report fast and reliable predictions, with robustness when promoter annotations are absent or regulatory elements are distant from genes.

Scientific Applications:

• Gene Regulation Studies: Identification of conserved TFBS to investigate mechanisms of gene regulation across species.
• Functional Genomics: Detection of conserved sites in promoters and enhancers to support elucidation of regulatory networks.
• Evolutionary Biology: Analysis of evolutionary conservation of regulatory elements to inform studies of gene expression conservation across species.

Methodology:

Adapts a previously introduced framework for discovering sites in sequences from co-regulated genes by comparing a given sequence to its homologs, applying an alignment-free relative-conservation measure to identify regions with higher conservation indicative of functional significance, and operating without using known transcription factor binding specificity descriptors.