XHM

XHM identifies potential cross-hybridization in DNA microarray experiments by comparing microarray probe sequences to an organism-specific transcriptome database to detect sequence similarities that can produce misleading hybridization signals.

Key Features:

• Detection of Cross-Hybridizations: Identifies probes likely to hybridize to non-target transcripts caused by high sequence similarity between genes.
• Probe–Transcriptome Sequence Comparison: Compares individual microarray probe sequences against a comprehensive organism-specific transcriptome database.
• Algorithmic Sequence Analysis: Employs computational algorithms to assess sequence similarity and flag potential cross-hybridization events.
• User-Adjustable Parameters: Provides configurable analysis parameters to modify sequence-matching criteria and thresholds.

Scientific Applications:

• Validation of Microarray Results: Identifies potential cross-hybridizations to support verification of differentially expressed gene lists.
• Enhanced Interpretation of Gene Expression Data: Supplies sequence-based evidence to refine interpretation of microarray-derived expression patterns.

Methodology:

Systematic comparison of microarray probe sequences against an organism-specific transcriptome database using algorithmic sequence-similarity analysis to identify and flag potential cross-hybridizations.