phosphoribosyltransferase – adp ribose transferases – cholera toxin – diphtheria toxin – nad+ nucleosidase – adp-ribosyl cyclase – pertussis toxin – poly(adp-ribose) polymerases – tankyrases – sirtuins – amidophosphoribosyltransferase – anthranilate phosphoribosyltransferase – ATP phosphoribosyltransferase – hypoxanthine phosphoribosyltransferase – orotate phosphoribosyltransferase – purine-nucleoside phosphorylase – thymidine phosphorylase – uridine phosphorylase – sialyltransferases – nitrogenous group transferases (EC 2.6) – transaminases – alanine transaminase – 2-aminoadipate transaminase – 4-aminobutyrate transaminase – aspartate aminotransferases – aspartate aminotransferase, cytoplasmic – aspartate aminotransferase, mitochondrial – beta-alanine-pyruvate transaminase – d-alanine transaminase – Glutamate synthase (ferredoxin) – glutamine-fructose-6-phosphate transaminase (isomerizing) – glycine transaminase – leucine transaminase – l-lysine 6-transaminase – ornithine-oxo-acid transaminase – succinyldiaminopimelate transaminase – tryptophan transaminase – tyrosine transaminase – one-carbon group transferases (EC 2.1) – amidinotransferases – carboxyl and carbamoyl transferases – aspartate carbamoyltransferase – ornithine carbamoyltransferase – hydroxymethyl and formyl transferases – aminomethyltransferase – glutamate formimidoyltransferase – glycine hydroxymethyltransferase – phosphoribosylaminoimidazolecarboxamide formyltransferase – phosphoribosylglycinamide formyltransferase – methyltransferases – acetylserotonin n-methyltransferase – betaine-homocysteine S-methyltransferase – catechol O-methyltransferase – dna modification methylases – dna (cytosine-5-)-methyltransferase – site-specific dna-methyltransferase (adenine-specific) – site-specific dna methyltransferase (cytosine-specific) – glycine N-methyltransferase – guanidinoacetate N-methyltransferase – histamine N-methyltransferase – homocysteine S-methyltransferase – 5-methyltetrahydrofolate-homocysteine s-methyltransferase – nicotinamide N-methyltransferase – phenylethanolamine N-methyltransferase – phosphatidyl-N-methylethanolamine N-methyltransferase – phosphatidylethanolamine N-methyltransferase – protein methyltransferases – histone-lysine n-methyltransferase – o-6-methylguanine-DNA methyltransferase – protein-arginine n-methyltransferase – protein o-methyltransferase – protein d-aspartate-l-isoaspartate methyltransferase – thymidylate synthase – trna methyltransferases – phosphotransferases (EC 2.7) – diphosphotransferases – gtp pyrophosphokinase – ribose-phosphate pyrophosphokinase – thiamin pyrophosphokinase – myosin type iii – nucleotidyltransferases – n-acylneuraminate cytidylyltransferase – choline-phosphate cytidylyltransferase – dna nucleotidyltransferases – dna-directed dna polymerase – dna polymerase beta – dna polymerase i – dna polymerase ii – dna polymerase iii – RNA-directed dna polymerase – hiv-1 reverse transcriptase – telomerase – taq polymerase – dna nucleotidylexotransferase – glucose-1-phosphate adenylyltransferase – nicotinamide-nucleotide adenylyltransferase – 2',5'-oligoadenylate synthetase – polynucleotide adenylyltransferase – rec a recombinases – rna nucleotidyltransferases – dna, catalytic – dna-directed rna polymerases – dna primase – rna polymerase i – rna polymerase ii – rna polymerase iii – rna polymerase sigma 54 – polyribonucleotide nucleotidyltransferase – q beta replicase – rna helicases – eukaryotic initiation factor-4a – rna replicase – rna, ribosomal, self-splicing – sulfate adenylyltransferase – transposases – hiv integrase – transposon resolvases – UDP-glucose—hexose-1-phosphate uridylyltransferase – UTP—glucose-1-phosphate uridylyltransferase – UTP—hexose-1-phosphate uridylyltransferase – vdj recombinases – phosphotransferases (alcohol group acceptor) – adenosine kinase – choline kinase –