Improved annotation of Streptomyces RefSeq genomes

We’ve completed the RefSeq reannotation of over 1,000 Streptomyces genomes! The genomes were reannotated using the Prokaryotic Genome Annotation Pipeline (PGAP). PGAP detected nearly 100% of ribosomally synthesized and post-translationally modified peptide natural products (RiPP)-encoding genes from known families, despite their small size, using a set of over 30 hidden Markov Models (HMMs) built by RefSeq biocurators. Over 70% (251) of lasso peptides now present in Streptomyces RefSeq genomes (354) were annotated for the first time.

If you are aware of any class of RiPP precursor in Streptomyces that was not found in our recent re-annotation, please contact us through the NCBI Help Desk, and we will add new HMMs to the rules we use to find and annotate RiPP precursor genes.

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