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4.1.2.43: 3-hexulose-6-phosphate synthase

This is an abbreviated version!
For detailed information about 3-hexulose-6-phosphate synthase, go to the full flat file.

Word Map on EC 4.1.2.43

Reaction

D-arabino-hex-3-ulose 6-phosphate
=
D-ribulose 5-phosphate
 +
formaldehyde

Synonyms

3-hexulose phosphate synthase, 3-hexulose-6-phosphate formaldehyde lyase, 3-hexulose-6-phosphate synthase, 3-hexulose-phosphate synthase, 3-hexulosephosphate synthase, D-arabino-3-hexulose 6-phosphate formaldehyde lyase, D-arabino-3-hexulose 6-phosphate formaldehyde-lyase, Fae-Hps, hexose phosphate synthase, hexulose-6-phosphate synthase, HPS, HPS-aldolase, HPS-PHI, HPS/PHI

ECTree

     4 Lyases
         4.1 Carbon-carbon lyases
             4.1.2 Aldehyde-lyases
                4.1.2.43 3-hexulose-6-phosphate synthase

Temperature Stability

Temperature Stability on EC 4.1.2.43 - 3-hexulose-6-phosphate synthase

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TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
40 - 60
-
no decrease in activity is observed within 6 h at 40°C in the presence of 5 mM MgCl2, at 50°C and 60°C the enzyme is stable for 2.5 and 0.5 h, respectively, one-half the initial activities are found after 6 and 1.5 h respectively
40 - 80
-
almost full activity is retained after incubation at 40°C for 30 min, whereas at 80°C for 10 min the enzyme is completely inactivated
55 - 65
-
the enzyme retains more than 50% of its activity at 55°C after 1 h, the enzyme retains more than 50% of its activity at 65°C after 30 min
6.5 - 7.5
-
remains stable in the pH range of 6.5-7.5 at 30°C for 6 h
60
-
3-hexulose phosphate synthase is rapidly inactivated at elevated temperatures, activity is totally lost within 5 min at 60°C