5.3.1.3: D-arabinose isomerase

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For detailed information about D-arabinose isomerase, go to the full flat file.

Word Map on EC 5.3.1.3

5.3.1.3

d-ribulose

l-fuculose

3-epimerase

klebsiella

pneumoniae

isomerization

d-altrose

epimerized

d-psicose

6-deoxy

l-ribose

agriculture

isomerases

l-galactose

l-xylose

isomerized

l-glucose

pallidus

Reaction

Synonyms

D-AI, D-arabinose aldose-ketose-isomerase, D-Arabinose isomerase, D-arabinose ketol-isomerase, D-Arabinose(L-fucose) isomerase, EC 5.1.3.25, Isomerase, arabinose, L-Fucose isomerase

ECTree

5 Isomerases

5.3 Intramolecular oxidoreductases

5.3.1 Interconverting aldoses and ketoses, and related compounds

5.3.1.3 D-arabinose isomerase

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Results	in table
14	AA Sequence
1	CAS Registry Number
6	Cloned(Commentary)
4	Crystallization (Commentary)
1	General Stability
23	Inhibitors
17	KM Value [mM]
6	Metals/Ions
13	Molecular Weight [Da]
12	Natural Substrates/ Products (Substrates)
39	Organism
5	Pathway
15	PDB ID
6	pH Optimum
1	pH Range
1	pH Stability
10	Purification (Commentary)
2	Reaction
5	Reaction Type
29	Reference
7	Source Tissue
21	Specific Activity [micromol/min/mg]
2	Storage Stability
60	Substrates and Products (Substrate)
9	Subunits
16	Synonyms
1	Systematic Name
1	Temperature Optimum [°C]
1	Temperature Stability [°C]
2	Turnover Number [1/s]

Systematic Name

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Systematic Name on EC 5.3.1.3 - D-arabinose isomerase

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D-arabinose aldose-ketose-isomerase

Requires a divalent metal ion (the enzyme from the bacterium Escherichia coli prefers Mn2+). The enzyme binds the closed form of the sugar and catalyses ring opening to generate a form of open-chain conformation that facilitates the isomerization reaction, which proceeds via an ene-diol mechanism [3]. The enzyme catalyses the aldose-ketose isomerization of several sugars. Most enzymes also catalyse the reaction of EC 5.3.1.25, L-fucose isomerase [3]. The enzyme from the bacterium Falsibacillus pallidus also converts D-altrose to D-psicose [4]. cf. EC 5.3.1.4, L-arabinose isomerase.