chipD: a web tool to design oligonucleotide probes for high-density tiling arrays

Area of Science:

• Genomics
• Bioinformatics
• Molecular Biology

Background:

• High-density tiling arrays are crucial for genomic applications like ChIP-chip and gene-expression profiling.
• Designing effective DNA oligonucleotide probes requires careful consideration of specificity, thermodynamics, and coverage.

Purpose of the Study:

• To introduce chipD, a web server designed to facilitate the creation of DNA oligonucleotide probes for tiling arrays.
• To provide a user-friendly platform for optimizing probe design based on specific application needs and array manufacturer requirements.

Main Methods:

• The chipD server employs a probe selection algorithm that optimizes probes based on target sequences and user-defined parameters.
• The algorithm prioritizes probe specificity, uniform thermodynamic properties, and homogeneous target sequence coverage, minimizing gaps.
• Output includes probe sequences, genomic locations, targeted strands, and hybridization characteristics.

Main Results:

• chipD successfully designs DNA oligonucleotide probes for high-density tiling arrays.
• The server's algorithm ensures probes are specific, thermodynamically similar, and provide homogeneous coverage.
• Successful application in designing tiling arrays for bacteria and yeast has been demonstrated.

Conclusions:

• chipD is a valuable tool for researchers needing to design DNA oligonucleotide probes for tiling arrays.
• The server enhances genomic research by improving the quality and efficiency of tiling array design.
• chipD is accessible online, supporting a range of genomic applications.