PANNOTATOR

PANNOTATOR performs high-quality functional annotation transfer across closely related bacterial genomes to support pan-genomic comparative analyses.

Key Features:

• Automated Annotation Pipeline: Automates annotation transfer and generates reports and corrections for multiple genome strains.
• Annotation Transfer from Reference Genomes: Transfers annotations from well-annotated reference genomes to closely related strains.
• Similarity Threshold: Applies a 70% similarity cut-off to determine eligible annotation transfers.
• High Correctness Rates: Achieves 98% correctness for gene names and 76% correctness for gene functions at a 70% similarity cut-off.
• Comparative Performance: Outperforms RAST and BASys by 41% and 21% in gene name annotation and by 66% and 17% in gene function annotation, respectively, when reliable annotations of closely related species are available.

Scientific Applications:

• Pan-genomic studies: Enables consistent functional annotation across strains to analyze genetic diversity within bacterial species.
• Genotype–phenotype analysis: Supports identification and characterization of genotype variations that contribute to distinct biological traits or pathogenicity among strains.
• Comparative genomics: Provides consistent annotations for comparative analyses across closely related bacterial genomes derived from next-generation sequencing data.

Methodology:

Automated pipeline that transfers annotations from well-annotated reference genomes to closely related strains using a 70% similarity cut-off and generates reports and corrections.