MetaFunPrimer

MetaFunPrimer designs high-throughput PCR primer pairs to quantify and characterize diverse functional genes, particularly large and variable gene families, across metagenomes and genomes.

Key Features:

• High-Throughput Primer Design: Generates numerous primer pairs in a single run to enable simultaneous amplification of multiple gene targets.
• Gene Target Prioritization: Ranks gene targets based on their presence and abundance within user-defined reference datasets such as environment-specific metagenomes or genomes.
• Integration with Environmental Data: Incorporates environment-specific metagenomes or genomes so primers target sequences prevalent and significant within specified ecological contexts.
• Optimization of Coverage and Specificity: Designs primers tailored to ranked genes with the aim of maximizing sequence coverage and amplification specificity.
• Input Sequence Types: Accepts protein and nucleotide sequences for genes of interest along with reference metagenomes or genomes as inputs.

Scientific Applications:

• amoA primer design and coverage improvement: Designed 78 primer pairs targeting ammonia monooxygenase subunit A (amoA) genes from ammonia-oxidizing bacteria (AOB) across 1,550 publicly available soil metagenomes, achieving 94% gene coverage versus 49% for previously published primers.
• Experimental validation with qPCR: Applied primers in incubation experiments using long-term nitrogen-fertilized and unfertilized soils and high-throughput quantitative PCR (qPCR), detecting higher amoA gene abundance with selected primer pairs in nitrogen-fertilized soils.

Methodology:

Takes protein and nucleotide sequences plus reference metagenomes/genomes as inputs, ranks targets by presence and abundance in the reference datasets, and generates multiple primer pairs per ranked gene to optimize coverage and specificity.