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| The enzymes in this section of the database are organized as you would find them in the
Enzyme-Nomenclature book. Click [+] to expand, and [–] to collapse, any section. Clicking on a heading will open a popup window with information on that class, subclass or sub-subclass. For a fully expanded list of the classes, subclasses and sub-subclasses, click here |
| EC 1 | [+] | ||
| EC 2 | [+] | ||
| EC 3 | [+] | ||
| EC 4 | [+] | ||
| EC 5 | [+] | ||
| EC 6 | [–] | ||
| EC 6.1 | [+] | ||
| EC 6.2 | [+] | ||
| EC 6.3 | [–] | ||
| EC 6.3.1 | [+] Acid—ammonia (or amine) ligases (amide synthases) | ||
| EC 6.3.2 | [+] Acid—amino-acid ligases (peptide synthases) | ||
| EC 6.3.3 | [+] Cyclo-ligases | ||
| EC 6.3.4 | [–] Other carbon-nitrogen ligases | ||
| EC 6.3.4.1 | GMP synthase. Now included in EC 6.3.5.2, GMP synthase (glutamine-hydrolysing) | ||
| EC 6.3.4.2 | CTP synthase (glutamine hydrolysing) | ||
| EC 6.3.4.3 | formate—tetrahydrofolate ligase | ||
| EC 6.3.4.4 | adenylosuccinate synthase | ||
| EC 6.3.4.5 | argininosuccinate synthase | ||
| EC 6.3.4.6 | urea carboxylase | ||
| EC 6.3.4.7 | ribose-5-phosphate—ammonia ligase | ||
| EC 6.3.4.8 | imidazoleacetate—phosphoribosyldiphosphate ligase | ||
| EC 6.3.4.9 | biotin—[methylmalonyl-CoA-carboxytransferase] ligase | ||
| EC 6.3.4.10 | biotin—[propionyl-CoA-carboxylase (ATP-hydrolysing)] ligase | ||
| EC 6.3.4.11 | biotin—[methylcrotonoyl-CoA-carboxylase] ligase | ||
| EC 6.3.4.12 | glutamate—methylamine ligase | ||
| EC 6.3.4.13 | phosphoribosylamine—glycine ligase | ||
| EC 6.3.4.14 | biotin carboxylase | ||
| EC 6.3.4.15 | biotin—[biotin carboxyl-carrier protein] ligase | ||
| EC 6.3.4.16 | carbamoyl-phosphate synthase (ammonia) | ||
| EC 6.3.4.17 | formate—dihydrofolate ligase | ||
| EC 6.3.4.18 | 5-(carboxyamino)imidazole ribonucleotide synthase | ||
| EC 6.3.4.19 | tRNAIle-lysidine synthase | ||
| EC 6.3.4.20 | 7-cyano-7-deazaguanine synthase | ||
| EC 6.3.4.21 | nicotinate phosphoribosyltransferase | ||
| EC 6.3.4.22 | tRNAIle2-agmatinylcytidine synthase | ||
| EC 6.3.4.23 | formate—phosphoribosylaminoimidazolecarboxamide ligase | ||
| EC 6.3.4.24 | tyramine—L-glutamate ligase | ||
| EC 6.3.4.25 | 2-amino-2′-deoxyadenylo-succinate synthase | ||
| EC 6.3.5 | [+] Carbon-nitrogen ligases with glutamine as amido-N-donor | ||
| EC 6.4 | [+] | ||
| EC 6.5 | [+] | ||
| EC 6.6 | [+] | ||
| EC 6.7 | [+] | ||
| EC 7 | [+] |