Protein families

• AAA ATPase family
• AB hydrolase superfamily
• ABC transporter superfamily
• ABCF ATPase subfamily
• ABC-2 integral membrane protein family
• ABC-4 integral membrane protein family
• Acetyltransferase family
• Acyl-CoA dehydrogenase family
• Alanine or glycine:cation symporter (AGCS) (TC 2.A.25) family
• Aldehyde dehydrogenase family
• Aldo/keto reductase family
• Aldo/keto reductase 2 subfamily
• Alpha/beta-type SASP family
• Amino acid-polyamine-organocation (APC) superfamily
• ATP-dependent AMP-binding enzyme family
• Autoinducer-2 exporter (AI-2E) (TC 2.A.86) family
• Bacterial solute-binding protein 1 family
• Bacterial solute-binding protein 3 family
• Bacterial solute-binding protein 8 family
• Binding-protein-dependent transport system permease family
• Carbohydrate kinase PfkB family
• Catalase family
• Cation diffusion facilitator (CDF) transporter (TC 2.A.4) family
• Cation transport ATPase (P-type) (TC 3.A.3) family
• CitM transporter family (TC 2.A.11)
• Class-I aminoacyl-tRNA synthetase family
• Class-II aminoacyl-tRNA synthetase family
• Class-I pyridoxal-phosphate-dependent aminotransferase family
• Class-II pyridoxal-phosphate-dependent aminotransferase family
• Class-III pyridoxal-phosphate-dependent aminotransferase family
• Class-IV pyridoxal-phosphate-dependent aminotransferase family
• Class-V pyridoxal-phosphate-dependent aminotransferase family
• Cof family
• CotF family
• CysTW subfamily
• Cytidine and deoxycytidylate deaminase family
• Cytochrome P450 family
• Dicarboxylate/amino acid:cation symporter (DAACS) (TC 2.A.23) family
• DNA polymerase type-Y family
• EamA transporter family
• ECF subfamily
• EmrB family
• Extradiol ring-cleavage dioxygenase family
• FecCD subfamily
• FGGY kinase family
• Flagella basal body rod proteins family
• FtsA/MreB family
• Fur family
• 'GDSL' lipolytic enzyme family
• GerABKA family
• GerABKC lipoprotein family
• GerPA/GerPF family
• Gfo/Idh/MocA family
• Glycosyl hydrolase 1 family
• Glycosyl hydrolase 4 family
• Glycosyl hydrolase 13 family
• Glycosyl hydrolase 18 family
• Glycosyltransferase 1 family
• Glycosyltransferase 2 family
• Glycosyltransferase 51 family
• HAD superfamily
• Helicase family
• Isochorismatase family
• LacI family
• LTA synthase family
• Lyase 1 family
• Major facilitator superfamily
• MalFG subfamily
• Mandelate racemase/muconate lactonizing enzyme family
• Membrane fusion protein (MFP) (TC 8.A.1) family
• MerR family
• Metallo-beta-lactamase superfamily
• Metallo-dependent hydrolases superfamily
• Metallophosphoesterase superfamily
• Methyltransferase superfamily
• MscS (TC 1.A.23) family
• MurCDEF family
• N-acetylmuramoyl-L-alanine amidase 2 family
• N-acetylmuramoyl-L-alanine amidase 3 family
• NAD(P)-dependent epimerase/dehydratase family
• Nitroreductase family
• Nucleobase:cation symporter-2 (NCS2) (TC 2.A.40) subfamily
• Nudix hydrolases
• 2-oxoacid dehydrogenase family
• Peptidase C40 family
• Peptidase C56 family
• Peptidase M16 family
• Peptidase M20 family
• Peptidase S8 family
• Peptidase S11 family
• Peptidase S26 family
• Peptidase S54 family
• Peroxiredoxin family
• Phage integrase family
• Phr family
• Polysaccharide deacetylase family
• Polysaccharide synthase family
• PRD-containing transcription factors
• Prokaryotic molybdopterin-containing oxidoreductase family
• Protein kinase superfamily
• PSMR family
• Purine/pyrimidine phosphoribosyltransferase family
• Radical SAM superfamily
• RAP family
• S-transferase-like (STL) superfamily
• Short-chain dehydrogenases/reductases (SDR) family
• SEDS proteins
• Sigma-70 factor family
• Site-specific recombinase resolvase family
• small heat shock protein (Hsp20) family
• Sodium:galactoside symporter (TC 2.A.2) family
• Sodium:solute symporter (SSF) (TC 2.A.21) family
• SOS response-associated peptidase family
• Spore germination protein (SGP) (TC 2.A.3.9) family
• SscA family
• Sugar phosphate cyclases superfamily
• Sugar transporter (TC 2.A.1.1) family
• TCR/Tet family
• TerC family
• TetR family
• Thioredoxin family
• 4-toluene sulfonate uptake permease (TSUP) (TC 2.A.102) family
• TPP enzyme family
• TRAFAC class translation factor GTPase superfamily
• Transferase hexapeptide repeat family
• Transpeptidase family
• UPF0053 family
• UPF0702 family
• UPF0750 membrane proteins
• Xanthine/uracil permease family
• Xre family
• Zinc-containing alcohol dehydrogenase family