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Literature summary extracted from

  • Pikis, A.; Immel, S.; Robrish, S.A.; Thompson, J.
    Metabolism of sucrose and its five isomers by Fusobacterium mortiferum (2002), Microbiology, 148, 843-852.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
3.2.1.122 additional information MalH is induced during growth on the sucrose isomers trehalulose, turanose, maltulose, leucrose and palatinose, but not on sucrose Fusobacterium mortiferum

Cloned(Commentary)

EC Number Cloned (Comment) Organism
3.2.1.122 structural organization of the putative alpha-glycoside operon Klebsiella pneumoniae
3.2.1.122 structural organization of the putative alpha-glycoside operon Escherichia coli
3.2.1.122 structural organization of the putative alpha-glycoside operon, gene malH is adjacent to malB and malR, malH gene is cloned and expressed in Escherichia coli PEP43 Fusobacterium mortiferum

General Stability

EC Number General Stability Organism
3.2.1.122 unstable enzyme Fusobacterium mortiferum

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
3.2.1.122 Co2+
-
Klebsiella pneumoniae
3.2.1.122 Co2+ activates Fusobacterium mortiferum
3.2.1.122 Mn2+
-
Klebsiella pneumoniae
3.2.1.122 Mn2+ cofactor, requirement Fusobacterium mortiferum
3.2.1.122 additional information metal-dependent Fusobacterium mortiferum
3.2.1.122 additional information metal-dependent Klebsiella pneumoniae
3.2.1.122 additional information requires a divalent metal ion, e.g. Mn2+ Fusobacterium mortiferum
3.2.1.122 Ni2+
-
Klebsiella pneumoniae
3.2.1.122 Ni2+ activates Fusobacterium mortiferum

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.122 49256
-
x * 49256, calculated from the amino acid sequence Klebsiella pneumoniae
3.2.1.122 49386
-
x * 49386, calculated from the amino acid sequence Escherichia coli
3.2.1.122 49712
-
4 * 49712, calculated from the amino acid sequence Fusobacterium mortiferum
3.2.1.122 50000
-
4 * 50000, SDS-PAGE Fusobacterium mortiferum

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.2.1.122 additional information Klebsiella pneumoniae
-
?
-
?
3.2.1.122 additional information Fusobacterium mortiferum carbohydrate metabolism ?
-
?

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.122 Escherichia coli Q8XEI0 enterohaemorrhagic strain O157:H7, GlvG
-
3.2.1.122 Fusobacterium mortiferum O06901 strain ATCC 25557, MalH
-
3.2.1.122 Klebsiella pneumoniae Q9AGA6 strain ATCC 23357, AglB
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.122 recombinant MalH expressed in Escherichia coli PEP43 Fusobacterium mortiferum

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.122 2.9
-
pH 7.5, 37°C, recombinant MalH, p-nitrophenyl-alpha-D-glucopyranoside 6-phosphate hydrolysis Fusobacterium mortiferum

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.122 4-methylumbelliferyl-alpha-D-glucopyranoside 6-phosphate + H2O
-
Fusobacterium mortiferum alpha-D-glucose 6-phosphate + 4-methylumbelliferone fluorescent product ?
3.2.1.122 leucrose 6'-phosphate + H2O
-
Fusobacterium mortiferum D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 leucrose 6'-phosphate + H2O
-
Klebsiella pneumoniae D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 maltulose 6'-phosphate + H2O
-
Fusobacterium mortiferum D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 maltulose 6'-phosphate + H2O
-
Klebsiella pneumoniae D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 additional information
-
Klebsiella pneumoniae ?
-
?
3.2.1.122 additional information not: cellobiose 6’-phosphate, gentiobiose 6’-phosphate Fusobacterium mortiferum ?
-
?
3.2.1.122 additional information not: D-glucose, D-fructose, non-phosphorylated sucrose isomers Fusobacterium mortiferum ?
-
?
3.2.1.122 additional information substrate specificity, not: sucrose 6-phosphate Fusobacterium mortiferum ?
-
?
3.2.1.122 additional information substrate specificity, not: sucrose 6-phosphate Klebsiella pneumoniae ?
-
?
3.2.1.122 additional information carbohydrate metabolism Fusobacterium mortiferum ?
-
?
3.2.1.122 p-nitrophenyl-alpha-D-glucopyranoside 6-phosphate + H2O
-
Fusobacterium mortiferum alpha-D-glucose 6-phosphate + p-nitrophenol yellow product ?
3.2.1.122 p-nitrophenyl-alpha-D-glucopyranoside 6-phosphate + H2O
-
Klebsiella pneumoniae alpha-D-glucose 6-phosphate + p-nitrophenol yellow product ?
3.2.1.122 p-nitrophenyl-beta-D-glucopyranoside 6-phosphate + H2O
-
Fusobacterium mortiferum beta-D-glucose 6-phosphate + p-nitrophenol
-
?
3.2.1.122 palatinose 6'-phosphate + H2O
-
Fusobacterium mortiferum D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 palatinose 6'-phosphate + H2O
-
Klebsiella pneumoniae D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 trehalulose 6'-phosphate + H2O
-
Fusobacterium mortiferum alpha-D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 trehalulose 6'-phosphate + H2O
-
Klebsiella pneumoniae alpha-D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 turanose 6'-phosphate + H2O
-
Fusobacterium mortiferum D-glucose 6-phosphate + D-fructose
-
?
3.2.1.122 turanose 6'-phosphate + H2O
-
Klebsiella pneumoniae D-glucose 6-phosphate + D-fructose
-
?

Subunits

EC Number Subunits Comment Organism
3.2.1.122 ?
-
Fusobacterium mortiferum
3.2.1.122 ? x * 49256, calculated from the amino acid sequence Klebsiella pneumoniae
3.2.1.122 ? x * 49386, calculated from the amino acid sequence Escherichia coli
3.2.1.122 tetramer 4 * 50000, SDS-PAGE Fusobacterium mortiferum
3.2.1.122 tetramer 4 * 49712, calculated from the amino acid sequence Fusobacterium mortiferum

Synonyms

EC Number Synonyms Comment Organism
3.2.1.122 AglB
-
Klebsiella pneumoniae
3.2.1.122 GlvG
-
Escherichia coli
3.2.1.122 MalH
-
Fusobacterium mortiferum
3.2.1.122 More belongs to familiy 4 of the glycosylhydrolase superfamily Fusobacterium mortiferum
3.2.1.122 More belongs to familiy 4 of the glycosylhydrolase superfamily Klebsiella pneumoniae

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.122 37
-
assay at Fusobacterium mortiferum

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.122 7.5
-
assay at Fusobacterium mortiferum
3.2.1.122 7.5
-
assay at Klebsiella pneumoniae

Cofactor

EC Number Cofactor Comment Organism Structure
3.2.1.122 additional information requires a divalent metal ion, e.g. Mn2+ Fusobacterium mortiferum
3.2.1.122 NAD+
-
Klebsiella pneumoniae
3.2.1.122 NAD+ cofactor, requirement Fusobacterium mortiferum