Information about 1.1.1.1 from Enzyme Nomenclature can be accessed from any of the following locations:
ExploreEnz at Trinity College Trinity College, Dublin Ireland (Uptime: 100%)

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KEGG Ligand Database for Enzyme Nomenclature Kyoto University Bioinformatics Center Japan (Uptime: 100%)

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Enzyme nomenclature database, ExPASy (Expert Protein Analysis System) Swiss Institute of Bioinformatics Switzerland (Uptime: 99%)

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IntEnZ (Integrated relational Enzyme database) European Bioinformatics Institute, Hinxton, Cambridge UK (Uptime: 100%)

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