Micromonosporaceae biosynthetic gene cluster diversity highlights the need for broad- spectrum investigations

Investigations of the bacterial family Micromonosporaceae have enabled the development of secondary metabolites critical to human health. Historical investigation of bacterial families for natural product discovery has focused on terrestrial strains, where time- consuming isolation processes often lead to the rediscovery of known compounds. To investigate the secondary metabolite potential of marine- derived Micromonosporaceae, 38 strains were sequenced, assembled and analysed using antiSMASH and BiG- SLiCE. BiG- SLiCE contains a near- comprehensive dataset of approximately 1.2 million publicly available biosynthetic gene clusters from primarily terrestrial strains. Our marine- derived Micromonosporaceae were directly compared to BiG- SLiCE's preprocessed database using BiG- SLiCE's query mode; genetic diversity within our strains was uncovered using BiG- SCAPE and metric multidimensional scaling analysis. Our analysis of marine- derived Micromonosporaceae emphasizes the clear need for broader genomic investigations of marine strains to fully realize their potential as sources of new natural products.