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Table 3 Comparison of gold and silver standard families to Pfam and SCOP families

From: A gold standard set of mechanistically diverse enzyme superfamilies

Gold/silver standard family

Pfam family*

SCOP family*

Reaction catalyzed

Enolase

enolase_n, enolase_c

Enolase N-terminal domain-like, enolase

Dehydration of 2-phospho-D-glycerate

Methylaspartate ammonia-lyase

maal_n, maal_c

Enolase N-terminal domain-like, D-glucarate dehydratase-like

Elimination of ammonia from methylaspartic acid

Mandelate racemase

mr_mle_n, mr_mle

Enolase N-terminal domain-like, D-glucarate dehydratase-like

Racemization of S-mandelate to R-mandelate

Dipeptide epimerase

mr_mle_n, mr_mle

Enolase N-terminal domain-like, D-glucarate dehydratase-like

Dipeptide epimerization

Chloromuconate cycloisomerase

mr_mle_n, mr_mle

Enolase N-terminal domain-like, D-glucarate dehydratase-like

Chloromuconate lactonization

Muconate cycloisomerase

mr_mle_n, mr_mle

Enolase N-terminal domain-like, D-glucarate dehydratase-like

Muconate lactonization

Ortho-succinylbenzoate synthase

mr_mle_n, mr_mle

Enolase N-terminal domain-like, D-glucarate dehydratase-like

Dehydration of 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylic acid

Glucarate dehydratase

mr_mle_n, mr_mle

Enolase N-terminal domain-like, D-glucarate dehydratase-like

Dehydration of D-glucarate

Galactonate dehydratase

mr_mle_n, mr_mle

NA

Dehydration of D-galactonate

Fosfomycin resistance protein FosA

Glyoxalase

Antibiotic resistance proteins

Addition of glutathione to the oxirane ring of fosfomycin

2,3-Dihydroxybiphenyl dioxygenase

Glyoxalase

Extradiol dioxygenases

Extradiol cleavage of 2,3-dihydroxybiphenyl to 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate

3,4-Dihydroxyphenylacetate 2,3-dioxygenase

Glyoxalase

Extradiol dioxygenases

extradiol cleavage of 3,4-dihydroxyphenylacetate to 2-hydroxy-5-carboxymethylmuconate semialdehyde

3-Methylcatechol 2,3-dioxygenase

Glyoxalase

Extradiol dioxygenases

Extradiol cleavage of 3-methylcatechol to 2-hydroxy-6-oxo-2,4-heptadienoate

4-Hydroxyphenylpyruvate dioxygenase

Glyoxalase

Extradiol dioxygenases

Conversion of 4-hydroxyphenylpyruvate to homogentisate

Glyoxalase I

Glyoxalase

Glyoxalase I

Conversion of methylglyoxal (hemithioacetal form) to S-D-lactoylglutathione

Methylmalonyl-CoA epimerase

Glyoxalase

Methylmalonyl-CoA epimerase

Epimerization of (2R)-methylmalonyl-CoA to (2S)-methylmalonyl-CoA

1,2-Dihydroxynaphthalene dioxygenase

Glyoxalase

NA

Extradiol cleavage of 1,2-dihydroxynaphthalene

2,2',3-Trihydroxybiphenyl dioxygenase

Glyoxalase

NA

Extradiol cleavage of 2,2',3-trihydroxybiphenyl to 2-hydroxy-6-oxo-(2-hydroxyphenyl)-hexa-2,4-dienoic acid

2,3-Dihydroxy-p-cumate-3,4-dioxygenase

Glyoxalase

NA

Extradiol cleavage of 2,3-dihydroxy-p-cumate to 2-hydroxy-3-carboxy-6-oxo-7-methylocta-2,4-dienoate

2,4,5-Trihydroxytoluene oxygenase

Glyoxalase

NA

Extradiol cleavage of 2,4,5-trihydroxytoluene

2,6-Dichlorohydroquinone dioxygenase

Glyoxalase

NA

Extradiol cleavage of 2,6-dichlorohydroquinone

3-Isopropylcatechol-2,3-dioxygenase

Glyoxalase

NA

Extradiol cleavage of 3-isopropylcatechol

4-Hydroxymandelate synthase

Glyoxalase

NA

Conversion of p-hydroxyphenylpyruvate to L-p-hydroxymandelate

Catechol 2,3-dioxygenase

Glyoxalase

NA

Extradiol cleavage of catechol to alpha-hydroxymuconic semialdehyde

Fosfomycin resistance protein FosB

Glyoxalase

NA

Addition of L-cysteine to the oxirane ring of fosfomycin

Fosfomycin resistance protein FosX

Glyoxalase

NA

Addition of water to the oxirane ring of fosfomycin

Adenosine deaminase

A_deaminase

Adenosine deaminase (ADA)

Deamination of adenosine

AMP deaminase

A_deaminase

NA

Deamination of AMP

Cytosine deaminase

Amidohydro_1

Cytosine deaminase catalytic domain; cytosine deaminase

Deamination of cytosine

N-acyl-D-amino-acid deacylase

Amidohydro_1

D-aminoacylase, catalytic domain; D-aminoacylase

Hydrolysis of an N-acyl-D-amino-acid

Dihydroorotase3

Amidohydro_1

Dihydroorotase

Synthesis of dihydroorotate from carbamoyl aspartate

D-hydantoinase

Amidohydro_1

Hydantoinase (dihydropyrimidinase), catalytic domain; hydantoinase (dihydropyrimidinase)

Hydrolytic ring cleavage of a dihydropyrimidine

L-hydantoinase

Amidohydro_1

Hydantoinase (dihydropyrimidinase), catalytic domain; hydantoinase (dihydropyrimidinase)

Hydrolytic ring cleavage of a 5 membered cyclic diamide

Isoaspartyl dipeptidase

Amidohydro_1

Isoaspartyl dipeptidase, catalytic domain; isoaspartyl dipeptidase

Hydrolysis of beta-l-isoaspartyl linkage of a dipeptide

Adenine deaminase

Amidohydro_1

NA

Deamination of adenine

Allantoinase

Amidohydro_1

NA

Hydrolysis of allantoin

Ammelide aminohydrolase

Amidohydro_1

NA

Deamination of ammelide

Aryldialkylphosphatase

Amidohydro_1

NA

Hydrolysis of an organophosphate

Atrazine chlorohydrolase

Amidohydro_1

NA

Hydrolytic dechlorination of atrazine

Dihydroorotase1

Amidohydro_1

NA

Synthesis of dihydroorotate from carbamoyl aspartate

Dihydroorotase2

Amidohydro_1

NA

Synthesis of dihydroorotate from carbamoyl aspartate

Guanine deaminase

Amidohydro_1

NA

Deamination of guanine

Hydroxydechloroatrazine ethylaminohydrolase

Amidohydro_1

NA

Conversion of 4-(ethylamino)-2-hydroxy-6-(isopropylamino)-1,3,5-triazine to N-isopropylammelide

Imidazolonepropionase

Amidohydro_1

NA

Hydrolysis of (S)-3-(5-oxo-4,5-dihydro-3H-imidazol-4-yl)propanoate

Melamine deaminase

Amidohydro_1

NA

Deamination of melamine

N-acetylgalactosamine-6-phosphate deacetylase

Amidohydro_1

NA

Deacetylation of N-acetylgalactosamine-6-phosphate

N-isopropylammelide isopropylaminohydrolase

Amidohydro_1

NA

Conversion of N-isopropylammelide to isopropylamine

S-triazine hydrolase

Amidohydro_1

NA

Hydrolysis of a triazine

Trzn

Amidohydro_1

NA

Hydrolysis of a triazine

N-acetylglucosamine-6-phosphate deacetylase

Amidohydro_1

N-acetylglucosamine-6-phosphate deacetylase, catalytic domain; N-acetylglucosamine-6-phosphate deacetylase

Deacetylation of N-acetylglucosamine-6-phosphate

Urease

Amidohydro_1, urease

Alpha-subunit of urease, catalytic domain; alpha-subunit of urease; urease, beta-subunit; urease, gamma-subunit

Hydrolysis of urea to ammonia and carbon dioxide

1-Aminocyclopropane-1-carboxylate deaminase

None

NA

Deamination of 1-aminocyclopropane-1-carboxylate

Phosphotriesterase

PTE

Phosphotriesterase-like

Hydrolysis of an organophosphate

Membrane dipeptidase

Renal_dipeptase

Renal dipeptidase

Hydrolysis of a dipeptide

Glucuronate isomerase

UxaC

Uronate isomerase TM0064

Conversion of D-glucuronate to D-frucuronate

Delta(3,5)-delta(2,4)-dienoyl-CoA isomerase

ECH

Crotonase-like

Isomerization of 3,5-dienoyl-CoA to 2,4-dienoyl-CoA

Methylmalonyl-CoA decarboxylase

ECH

Crotonase-like

Decarboxylation of methylmalonyl CoA

Methylglutaconyl-CoA hydratase

ECH

Crotonase-like

Hydration of 3-methylglutaconyl-CoA

Enoyl-CoA hydratase

ECH

Crotonase-like

Hydration of trans-2-enoyl-CoA thiolester

4-Chlorobenzoate dehalogenase

ECH

Crotonase-like

Hydrolytic dehalogenation of 4-chlorobenzoyl-CoA

Dodecenoyl-CoA delta-isomerase (peroxisomal)

ECH

Crotonase-like

Isomerization of 3-enoyl-CoA to 2-enoyl-CoA

Methylglutaconyl-CoA hydratase 2

ECH

NA

Hydration of 3-methylglutaconyl-CoA

Histone acetyltransferase

ECH

NA

Acetylation of histone

2-Ketocyclohexanecarboxyl-CoA hydrolase

ECH

NA

Cleavage of 2-ketocyclohexanecarboxyl-CoA to pimelyl-CoA

1,4-Dihydroxy-2-napthoyl-CoA synthase

ECH

NA

Cyclization of o -succinylbenzoate-CoA thioester

Feruloyl-CoA hydratase/lyase

ECH

NA

Hydration and nonoxidative cleavage of feruloyl-SCoA to vanillin and acetyl-SCoA

Crotonobetainyl-CoA hydratase

ECH

NA

Hydration of crotonobetainyl-CoA

Cyclohex-1-enecarboxyl-CoA hydratase

ECH

NA

Hydration of cyclohex-1-enecarboxyl-CoA

Cyclohexa-1,5-dienecarbonyl-CoA hydratase

ECH

NA

Hydration of cyclohexa-1,5-diene-1-carboxyl-CoA

3-Hydroxyisobutyryl-CoA hydrolase

ECH

NA

Hydrolysis of 3-hydroxyisobutyryl-CoA

Dodecenoyl-CoA delta-isomerase (mitochondrial)

ECH

NA

Isomerization of 3-enoyl-CoA to 2-enoyl-CoA

Beta-phosphoglucomutase

Hydrolase

Beta-phosphoglucomutase-like

Conversion of beta-glucose-1-phosphate to glucose-6-phosphate

P-type ATPase

Hydrolase

Calcium ATPase, catalytic domain P

Dephosphorylation of ATP to ADP

Epoxide hydrolase N-terminal phosphatase

Hydrolase

Epoxide hydrolase, N-terminal domain

Dephosphorylation

2-Haloacid dehalogenase

Hydrolase

L-2-haloacid dehalogenase, HAD

Dehalogenation of (s)-2-haloacid

Phosphoserine phosphatase

Hydrolase

Phosphoserine phosphatase

Dephosphorylation of phosphoserine

Phosphonoacetaldehyde hydrolase

Hydrolase

Phosphonoacetaldehyde hydrolase

Hydrolysis of phosphonoacetaldehyde

2-Deoxyglucose-6-phosphatase

Hydrolase

NA

Dephosphorylation of 2-deoxyglucose-6-phosphate

Phosphoglycolate phosphatase

Hydrolase

NA

Dephosphorylation of 2-phosphoglycolate

Phosphoglycolate phosphatase 2

Hydrolase

NA

Dephosphorylation of 2-phosphoglycolate

Glycerol-3-phosphate phosphatase

Hydrolase

NA

Dephosphorylation of glycerol-3-phosphate

Pyridoxal phosphatase

Hydrolase

NA

Dephosphorylation of pyridoxal 5'-phosphate

Enolase-phosphatase

Hydrolase

NA

Oxidative cleavage

Histidinol-phosphatase

IGPD

NA

Dephosphorylation of L-histidinol-phosphate

Sucrose-phosphatase

S6PP

NA

Dephosphorylation of sucrose 6-phosphate

Trehalose-phosphatase

Trehalose_ PPase

NA

Dephosphorylation of trehalose 6-phosphate

5'-Nucleotidase

None

5' (3')-Deoxyribonucleotidase (dNT-2)

Dephosphorylation of 5' nucleotide

Deoxy-D-mannose-octulosonate 8-phosphate phosphatase

None

Probable phosphatase YrbI

Dephosphorylation of 3-deoxy-D-manno-octulosonate 8-phosphate

Polynucleotide 5'-hydroxyl-kinase carboxy-terminal phosphatase

None

Polynucleotide kinase, phosphatase domain

Dephosphorylation of 3' nucleotide

mdp-1

None

NA

Dephosphorylation

Mannosyl-3-phosphoglycerate phosphatase

None

NA

Dephosphorylation of 2(alpha-D-mannosyl)-3-phosphoglycerate

  1. *Some gold standard families correspond to multiple Pfam and/or SCOP families because Pfam and SCOP divide the enzymes in question into multiple structural domains, each with a different family assignment. NA = Not applicable, IGPD, Pfam Imidazoleglycerol-phosphate dehydratase family; ECH, Pfam Enoyl-CoA hydratase/isomerase family; PTE, Pfam Phosphotriesterase family.