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EC Tree

1 Oxidoreductases

2.1 Transferring one-carbon groups

2.2 Transferring aldehyde or ketonic groups

2.2.1 Transketolases and transaldolases

2.3 Acyltransferases

2.4 Glycosyltransferases

2.5 Transferring alkyl or aryl groups, other than methyl groups

2.6 Transferring nitrogenous groups

2.6.1 Transaminases

2.6.2 Amidinotransferases (deleted sub-subclass)

2.6.3 Oximinotransferases

2.6.99 Transferring other nitrogenous groups

2.6.99.1 dATP(dGTP)—DNA purinetransferase

2.6.99.2 pyridoxine 5′-phosphate synthase

2.6.99.3 O-ureido-L-serine synthase

2.6.99.4 N⁶-L-threonylcarbamoyladenine synthase

2.7 Transferring phosphorus-containing groups

2.7.1 Phosphotransferases with an alcohol group as acceptor

2.7.2 Phosphotransferases with a carboxy group as acceptor

2.7.3 Phosphotransferases with a nitrogenous group as acceptor

2.7.4 Phosphotransferases with a phosphate group as acceptor

2.7.5 Phosphotransferases with regeneration of donors, apparently catalysing intramolecular transfers (deleted sub-subclass)

2.7.6 Diphosphotransferases

2.7.7 Nucleotidyltransferases

2.7.8 Transferases for other substituted phosphate groups

2.7.9 Phosphotransferases with paired acceptors

2.7.10 Protein-tyrosine kinases

2.7.11 Protein-serine/threonine kinases

2.7.12 Dual-specificity kinases (those acting on Ser/Thr and Tyr residues)

2.7.13 Protein-histidine kinases

2.7.14 Protein-arginine kinases

2.7.99 Other protein kinases

2.8 Transferring sulfur-containing groups

2.9 Transferring selenium-containing groups

2.9.1 Selenotransferases

2.10 Transferring molybdenum- or tungsten-containing groups

2.10.1 Molybdenumtransferases or tungstentransferases with sulfide groups as acceptors

2.10.1.1 molybdopterin molybdotransferase

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Release 2023.1 (January 2023)