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MetaNetX provides an interactive resource for searching chemicals, reactions, and compartments in genome-scale metabolic networks.

The Database of Genomic Variants is a curated catalog of human structural variation, with browser, download, query, and submission tools.

The EAWAG Biocatalysis and Biodegradation Database provides microbial reaction and biodegradation pathway information, though it is no longer actively maintained.

PAZy catalogs plastic-active enzymes, substrates, enzyme structures, and curated literature on plastic degradation.

The Cambridge Structural Database contains curated crystal-structure data for chemistry research.

Hradec Králové's open data catalog covers municipal and company records, with datasets grouped into topics such as government, education, and transport.

Ostrava’s open data catalog organizes datasets across topics such as transport, culture, population, public services, and the environment.

The Candida Genome Database provides curated genomic, protein, phenotype, literature and sequence information.

Search BioGRID's online repository of protein, chemical, and genetic interaction data.

Organic Synthesis Search lets users browse chemical transformations by the desired bond formation.

The algebraic phylogenetics database catalogs algebraic invariants associated with small phylogenetic trees and networks.

The European Database of Seismogenic Faults catalogs faults considered capable of generating earthquakes of magnitude 5.5 or higher.

The Mediterranean Germplasm Database catalogs the agro-food plant germplasm collection held by Italy’s National Research Council.

NASA/IPAC Extragalactic Database provides astronomical object data and reports recent additions to its catalog.

NORMAN SusDat compiles chemical substance information from the NORMAN network and its Suspect List Exchange.

SEDICI is the institutional repository of the National University of La Plata, with search, collections, authors, and subject browsing.

The Marine Data Portal supports research data management, publishing, visualization, browsing, and access across marine science projects.

Infevers lists genes associated with autoinflammatory diseases, organized alphabetically for browsing.

The German ZVDD portal indexes digitized printed works dating from the 15th century onward, with title search and collection browsing.

Wiki-Pi supports searching human protein interactions and browsing disease-related interaction networks.

UCL Discovery provides open access to research outputs from University College London, with search and browsing by department and year.

The Human Ageing Genomic Resources include curated databases on ageing-related genes, dietary restriction, and longevity.

PathCards integrates human biological pathway databases and annotations into unified pathway records.

BMRB collects and annotates biological NMR data to make it findable, accessible, interoperable, and reusable.