PrimerBac

Find taxon-specific PCR primers

Search by species or genus to compare primer sequences, melting temperatures, product lengths, Target, Sensitivity and Score.

Partial and case-insensitive searches are supported.

How to use PrimerBac

1
Search a taxon
Enter a complete or partial species or genus name.
2
Compare candidate primers
Sort candidates by Score, Target or Sensitivity.
3
Select or download
Choose a primer pair or download the database files.
About PrimerBac

PrimerBac is a searchable resource of taxon-specific PCR primer candidates for microbiome identification. It provides species- and genus-level primer sequences, design metrics, and a curated gut-associated reference background. Candidate primers were designed from representative sequences of core orthologous groups present in more than 95% of the included RefSeq genomes and screened against RI before database inclusion. Representative species-level pairs were additionally assessed using broad and temporally independent RefSeq assembly panels.

RI–RefSeq coverage
Genus
RI–RefSeq coverage
Species
1,645 matched species

Pan-genome analysis across major phyla

Pan-genome analysis across major phyla

PrimerBac construction workflow

RefSeq genomes matched to RI taxa were used for pan-genome analysis. Representative sequences from core orthologous groups present in more than 95% of the included genomes were supplied to Primer3 for candidate primer design. Candidate pairs were then screened against the RI background before database inclusion. The modular workflow can be adapted to other microbiome-associated taxonomic collections.

PrimerBac construction workflow