aldose 1-epimerase family protein may catalyze the interconversion of the alpha- and beta-anomers of hexose sugars such as glucose and galactose; similar to deoxyribose mutarotase
deoxyribose mutarotase_like; Salmonella enterica serovar Typhi DeoM (earlier named as DeoX) is ...
47-335
0e+00
deoxyribose mutarotase_like; Salmonella enterica serovar Typhi DeoM (earlier named as DeoX) is a mutarotase with high specificity for deoxyribose. It is encoded by one of four genes beonging to the deoK operon. This operon has also been found in Escherichia coli where it is more common in pathogenic than in commensal strains and is associated with pathogenicity. It has been found on a pathogenicity island from a human blood isolate AL863 and confers the ability to use deoxyribose as a carbon source; deoxyribose is not fermented by non-pathogenic E.coli K-12. Proteins in this family are members of the aldose-1-epimerase superfamily. Aldose 1-epimerases, or mutarotases, are key enzymes of carbohydrate metabolism, catalyzing the interconversion of the alpha- and beta-anomers of hexose sugars such as glucose and galactose. This interconversion is an important step that allows anomer specific metabolic conversion of sugars. Studies of the catalytic mechanism of the best known member of the family, galactose mutarotase, have shown a glutamate and a histidine residue to be critical for catalysis; the glutamate serves as the active site base to initiate the reaction by removing the proton from the C-1 hydroxyl group of the sugar substrate, and the histidine as the active site acid to protonate the C-5 ring oxygen. Site directed mutagenesis of this latter histidine residue renders Salmonella enterica DeoM inactive.
:
Pssm-ID: 185703 Cd Length: 293 Bit Score: 533.42 E-value: 0e+00
deoxyribose mutarotase_like; Salmonella enterica serovar Typhi DeoM (earlier named as DeoX) is ...
47-335
0e+00
deoxyribose mutarotase_like; Salmonella enterica serovar Typhi DeoM (earlier named as DeoX) is a mutarotase with high specificity for deoxyribose. It is encoded by one of four genes beonging to the deoK operon. This operon has also been found in Escherichia coli where it is more common in pathogenic than in commensal strains and is associated with pathogenicity. It has been found on a pathogenicity island from a human blood isolate AL863 and confers the ability to use deoxyribose as a carbon source; deoxyribose is not fermented by non-pathogenic E.coli K-12. Proteins in this family are members of the aldose-1-epimerase superfamily. Aldose 1-epimerases, or mutarotases, are key enzymes of carbohydrate metabolism, catalyzing the interconversion of the alpha- and beta-anomers of hexose sugars such as glucose and galactose. This interconversion is an important step that allows anomer specific metabolic conversion of sugars. Studies of the catalytic mechanism of the best known member of the family, galactose mutarotase, have shown a glutamate and a histidine residue to be critical for catalysis; the glutamate serves as the active site base to initiate the reaction by removing the proton from the C-1 hydroxyl group of the sugar substrate, and the histidine as the active site acid to protonate the C-5 ring oxygen. Site directed mutagenesis of this latter histidine residue renders Salmonella enterica DeoM inactive.
Pssm-ID: 185703 Cd Length: 293 Bit Score: 533.42 E-value: 0e+00
deoxyribose mutarotase_like; Salmonella enterica serovar Typhi DeoM (earlier named as DeoX) is ...
47-335
0e+00
deoxyribose mutarotase_like; Salmonella enterica serovar Typhi DeoM (earlier named as DeoX) is a mutarotase with high specificity for deoxyribose. It is encoded by one of four genes beonging to the deoK operon. This operon has also been found in Escherichia coli where it is more common in pathogenic than in commensal strains and is associated with pathogenicity. It has been found on a pathogenicity island from a human blood isolate AL863 and confers the ability to use deoxyribose as a carbon source; deoxyribose is not fermented by non-pathogenic E.coli K-12. Proteins in this family are members of the aldose-1-epimerase superfamily. Aldose 1-epimerases, or mutarotases, are key enzymes of carbohydrate metabolism, catalyzing the interconversion of the alpha- and beta-anomers of hexose sugars such as glucose and galactose. This interconversion is an important step that allows anomer specific metabolic conversion of sugars. Studies of the catalytic mechanism of the best known member of the family, galactose mutarotase, have shown a glutamate and a histidine residue to be critical for catalysis; the glutamate serves as the active site base to initiate the reaction by removing the proton from the C-1 hydroxyl group of the sugar substrate, and the histidine as the active site acid to protonate the C-5 ring oxygen. Site directed mutagenesis of this latter histidine residue renders Salmonella enterica DeoM inactive.
Pssm-ID: 185703 Cd Length: 293 Bit Score: 533.42 E-value: 0e+00
aldose 1-epimerase superfamily; Aldose 1-epimerases or mutarotases are key enzymes of ...
47-333
2.08e-20
aldose 1-epimerase superfamily; Aldose 1-epimerases or mutarotases are key enzymes of carbohydrate metabolism; they catalyze the interconversion of the alpha- and beta-anomers of hexose sugars such as glucose and galactose. This interconversion is an important step that allows anomer specific metabolic conversion of sugars. Studies of the catalytic mechanism of the best known member of the family, galactose mutarotase, have shown a glutamate and a histidine residue to be critical for catalysis; the glutamate serves as the active site base to initiate the reaction by removing the proton from the C-1 hydroxyl group of the sugar substrate and the histidine as the active site acid to protonate the C-5 ring oxygen.
Pssm-ID: 185695 [Multi-domain] Cd Length: 284 Bit Score: 89.45 E-value: 2.08e-20
Aldose 1-epimerase, similar to Escherichia coli c4013; Proteins, similar to Escherichia coli ...
101-333
2.35e-15
Aldose 1-epimerase, similar to Escherichia coli c4013; Proteins, similar to Escherichia coli c4013, are uncharacterized members of aldose-1-epimerase superfamily. Aldose 1-epimerases or mutarotases are key enzymes of carbohydrate metabolism, catalyzing the interconversion of the alpha- and beta-anomers of hexose sugars such as glucose and galactose. This interconversion is an important step that allows anomer specific metabolic conversion of sugars. Studies of the catalytic mechanism of the best known member of the family, galactose mutarotase, have shown a glutamate and a histidine residue to be critical for catalysis; the glutamate serves as the active site base to initiate the reaction by removing the proton from the C-1 hydroxyl group of the sugar substrate, and the histidine as the active site acid to protonate the C-5 ring oxygen.
Pssm-ID: 185700 Cd Length: 284 Bit Score: 74.96 E-value: 2.35e-15
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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