Table 1. Public data resources utilized for the construction of MarRef, MarDB and MarCat.

Type	Database	URL
Sequence databases	ENA, European Nucleotide Archive	ebi.ac.uk/ena
	UniProt, Universal Protein Resource	uniprot.org
	NCBI, National Center for Biotechnology Information	ncbi.nlm.nih.gov
Contextual databases	PATRIC, Pathosystems Resource Integration Center	patricbrc.org
	GOLD, Genomes OnLine Database	gold.jgi.doe.gov
Taxonomic databases	SILVA, SILVA high quality ribosomal RNA database	arb-silva.de
	NCBI Taxonomy browser	ncbi.nlm.nih.gov/taxonomy
Bacterial diversity metadatabases	BacDive, Bacterial Diversity Metadatabase	bacdive.dsmz.de
Culture collection databases	DSMZ, Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH	dsmz.de
	ATCC, American Type Culture Collection	atcc.org
Marine organisms database	WoRMS, World Register of Marine Species	marinespecies.org
Web mapping service	Google maps	maps.google.com
Literature databases	Europe PMC, Europe PubMed Central	europepmc.org
	PubMed	ncbi.nlm.nih.gov/pubmed
	doi, Digital Object Identifier System	doi.org
Ontology databases	BioPortal	bioportal.bioontology.org
Standards MIGS/MIMS	GSC, Genomic Standards Consortium	gensc.org