5.3.1.34: D-erythrulose 4-phosphate isomerase

This is an abbreviated version!
For detailed information about D-erythrulose 4-phosphate isomerase, go to the full flat file.

Reaction

Synonyms

eryI, RpiB

ECTree

5 Isomerases

5.3 Intramolecular oxidoreductases

5.3.1 Interconverting aldoses and ketoses, and related compounds

5.3.1.34 D-erythrulose 4-phosphate isomerase

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28	AA Sequence
1	Cloned(Commentary)
2	General Information
4	Inhibitors
2	Molecular Weight [Da]
2	Natural Substrates/ Products (Substrates)
4	Organism
6	Pathway
2	pH Optimum
1	pH Stability
1	pI Value
2	Purification (Commentary)
1	Reaction
3	Reference
1	Source Tissue
2	Specific Activity [micromol/min/mg]
1	Storage Stability
8	Substrates and Products (Substrate)
1	Subunits
4	Synonyms
1	Systematic Name
1	Temperature Optimum [°C]
1	Temperature Stability [°C]

Substrates Products

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Substrates Products on EC 5.3.1.34 - D-erythrulose 4-phosphate isomerase

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D-erythrose 4-phosphate

D-erythrulose 4-phosphate

Bos taurus

738147

initially D-threose 4-phosphate is also formed. After 240 min, about 90% of tetrose 4-phosphate is D-erythrulose 4-phosphate, 5% is D-threose 4-phosphate

D-erythrulose 4-phosphate

D-erythrose 4-phosphate

4 entries

D-ribulose-5-phosphate

D-xylulose 5-phosphate

Bos taurus

738147

strong D-ribulose-5-phosphate 3-epimerase activity, reaction of EC 5.1.3.1

D-threose 4-phosphate

D-erythrulose 4-phosphate

Bos taurus

130% of the activity with D-erythrose 4-phosphate

738147

D-threose 4-phosphate isomerizes non-enzymatically more easily than D-erythrose 4-phosphate to D-erythrulose 4-phosphate

additional information

Bos taurus

enzyme can catalyze simultaneously both the isomerization and epimerization of D-erythrose 4-phosphate to D-erythrulose 4-phosphate and D-threose 4-phosphate. No isomerase activity with D-glyceraldehyde 3-phosphate, D-ribose 5-phosphate, D-glucose 6-phosphate and D-fructose 6-phosphate

738147