5.3.1.27: 6-phospho-3-hexuloisomerase

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For detailed information about 6-phospho-3-hexuloisomerase, go to the full flat file.

Word Map on EC 5.3.1.27

5.3.1.27

formaldehyde

monophosphate

ribulose

rump

methanol

nonmethylotrophic

methanolicus

gastri

feedstock

formaldehyde-fixing

one-carbon

synthesis

pentose

fructose-6-phosphate

methylotrophy

dissimilation

pyrococcus

hyperthermophilic

nad-dependent

corynebacterium

methylomonas

glutamicum

Reaction

Synonyms

3-hexulose-6-phosphate isomerase, 6-phospho-3-hexuloisomerase, Hpi1, Hpsi2, HxlB, PHI, phospho-3-hexuloisomerase, YckF, [acyl-carrier protein]:acetate ligase

ECTree

5 Isomerases

5.3 Intramolecular oxidoreductases

5.3.1 Interconverting aldoses and ketoses, and related compounds

5.3.1.27 6-phospho-3-hexuloisomerase

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Results	in table
2	Activating Compound
542	AA Sequence
6	Application
7	Cloned(Commentary)
2	Crystallization (Commentary)
21	General Information
6	Inhibitors
4	KM Value [mM]
1	Metals/Ions
11	Molecular Weight [Da]
17	Natural Substrates/ Products (Substrates)
45	Organism
11	Pathway
2	pH Optimum
5	Protein Variants
1	Purification (Commentary)
1	Reaction
16	Reaction Type
38	Reference
4	Specific Activity [micromol/min/mg]
2	Storage Stability
30	Substrates and Products (Substrate)
9	Subunits
48	Synonyms
1	Systematic Name
4	Temperature Optimum [°C]
2	Temperature Stability [°C]

Systematic Name

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Systematic Name on EC 5.3.1.27 - 6-phospho-3-hexuloisomerase

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D-arabino-hex-3-ulose-6-phosphate isomerase

This enzyme, along with EC 4.1.2.43, 3-hexulose-6-phosphate synthase, plays a key role in the ribulose-monophosphate cycle of formaldehyde fixation, which is present in many microorganisms that are capable of utilizing C1-compounds [1]. The hyperthermophilic and anaerobic archaeon Pyrococcus horikoshii OT3 constitutively produces a bifunctional enzyme that sequentially catalyses the reactions of EC 4.1.2.43 (3-hexulose-6-phosphate synthase) and this enzyme [4].