Supplementary information provided with Murray et al.: Discovery of an Antarctic ascidian-associated uncultivated Verrucomicrobia with antimelanoma palmerolide biosynthetic potential ...

• Main Authors: Murray, Alison E, Lo, Chien-Chi, Daligault, Hajnalka E, Avalon, Nicole E, Read, Robert W, Davenport, Karen W, Higham, Mary L, Kunde, Yuliya, Dichosa, Armand EK, Baker, Bill J, Chain, Patrick SG
• Format: Dataset
• Language: English
• Published: Dryad 2021
• Subjects: FOS Biological sciences; Antarctic; The Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.5061/dryad.8sf7m0cpp; https://datadryad.org/stash/dataset/doi:10.5061/dryad.8sf7m0cpp

The Antarctic marine ecosystem harbors a wealth of biological and chemical innovation that has risen in concert over millennia since the isolation of the continent and formation of the Antarctic circumpolar current. Scientific inquiry into the novelty of marine natural products produced by Antarctic benthic invertebrates led to the discovery of a bioactive macrolide, palmerolide A, that has specific activity against melanoma and holds considerable promise as an anticancer therapeutic. While this compound was isolated from the Antarctic ascidian Synoicum adareanum, its biosynthesis has since been hypothesized to be microbially mediated, given structural similarities to microbially-produced hybrid non-ribosomal peptide-polyketide macrolides. Here, we describe a metagenome-enabled investigation aimed at identifying the biosynthetic gene cluster (BGC) and palmerolide A-producing organism. A 74 Kbp candidate BGC encoding the multi-modular enzymatic machinery (hybrid Type I-trans-AT polyketide ... : See the publication for details (main text and supplemental methods section). Briefly, we used a metagenomic approach to sequence a microbial community from an Antarctic ascidian, Synoicum adareanum. From this we assembled a nearly complete metagenome assembled genome (MAG) that encodes a candidate palmerolide A biosynthetic gene cluster of a verrucomicrobium affiliated new bacterium named in this manuscript as Candidatus Synoicihabitans palmerolidicus. The supplemental material provided in this data set includes (i) Figure S1 which provides correlation coefficients derived between real time PCR data (methods described in the manuscript) and amplicon sequence variant (ASV) occurrences across a data set of 63 samples. (ii) Figure S2 displays the taxonomic classification of predicted proteins in the assembled MAG derived from an annotation pipeline called MetaERG. (iii) The annotation of the Ca. S. palmerolidicus genome, as a GFF file formatted file. ...