Difference between revisions of "Part:BBa K2448022"
 
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===Usage and Biology===
 
===Usage and Biology===
  
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D-Psicose 3-epimerase (EC: 5.1.3.30) catalyses the reversible epimerization of D-fructose into D-psicose, D-Psicose being the carbon-3 (C3) epimer of D-fructose.
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D-Psicose 3-epimerase (EC: 5.1.3.30) catalyses the reversible epimerization of D-fructose into D-psicose, D-psicose being the carbon-3 (C3) epimer of D-fructose.
  
 
[[File: T--Evry_Paris-Saclay--EC 5.1.3.30.png|300px]]
 
[[File: T--Evry_Paris-Saclay--EC 5.1.3.30.png|300px]]
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The ''A. tumefaciens'' Dpe is a 31.56 kDa protein of 289 amino acids.
 
The ''A. tumefaciens'' Dpe is a 31.56 kDa protein of 289 amino acids.
  
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This enzyme is highly specific for D-Psicose, but is also able to catalyse with very low activity the epimerization of other D-ketoses (in the decreased substrate specificity) : D-fructose, D-tagatose, D-ribulose, D-xylulose, and D-sorbose [1].
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This enzyme is highly specific for D-Psicose, but it is also able to catalyse with very low activity the epimerization of other D-ketoses (in the decreased substrate specificity) : D-fructose, D-tagatose, D-ribulose, D-xylulose and D-sorbose [1]. For optimal activity, it requires cofactors such as Mn2+ or Co2+, although it has a low basal activity without ions. The native Dpe shows a tetrameric arrangement of 132 kDa, and each subunit has 289 amino acids with a molecular weight of 33 kDa. The topology of each subunit is a TIM-barrel fold with a cluster of eight β-strands surrounded by twelve α-helices [2].
  
 
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Latest revision as of 18:39, 1 November 2017


D-Psicose 3-epimerase (Dpe) from Agrobacterium tumefaciens

This is the original sequence of the D-Psicose 3-epimerase (Dpe) from Agrobacterium tumefaciens str. C58 (Atu4750, UniProt A9CH28).

Usage and Biology

D-Psicose 3-epimerase (EC: 5.1.3.30) catalyses the reversible epimerization of D-fructose into D-psicose, D-psicose being the carbon-3 (C3) epimer of D-fructose.

T--Evry Paris-Saclay--EC 5.1.3.30.png

The A. tumefaciens Dpe is a 31.56 kDa protein of 289 amino acids.

This enzyme is highly specific for D-Psicose, but it is also able to catalyse with very low activity the epimerization of other D-ketoses (in the decreased substrate specificity) : D-fructose, D-tagatose, D-ribulose, D-xylulose and D-sorbose [1]. For optimal activity, it requires cofactors such as Mn2+ or Co2+, although it has a low basal activity without ions. The native Dpe shows a tetrameric arrangement of 132 kDa, and each subunit has 289 amino acids with a molecular weight of 33 kDa. The topology of each subunit is a TIM-barrel fold with a cluster of eight β-strands surrounded by twelve α-helices [2].

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    INCOMPATIBLE WITH RFC[21]
    Unknown
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal NgoMIV site found at 190
    Illegal NgoMIV site found at 250
    Illegal NgoMIV site found at 601
    Illegal AgeI site found at 628
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal SapI.rc site found at 156