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Literature summary for 5.3.1.5 extracted from

  • Danno, G.
    Studies on the D-glucose-isomerizing enzyme from Bacillus coagulans, strain HN-68. Part V. Comparative study on the three activities of D-glucose, D-xylose and D-ribose isomerization of the crystalline enzyme (1970), Agric. Biol. Chem., 34, 1805-1814.
No PubMed abstract available

General Stability

General Stability Organism
Mn2+, Co2+ and Ni2+ strongly protect the enzyme from heat denaturation Weizmannia coagulans

Inhibitors

Inhibitors Comment Organism Structure
D-mannitol competitive Weizmannia coagulans
D-ribose inhibits D-glucose isomerization Weizmannia coagulans
D-sorbitol competitive Weizmannia coagulans
D-xylitol competitive Weizmannia coagulans
D-xylose inhibits D-glucose isomerization Weizmannia coagulans
EDTA
-
Weizmannia coagulans
Tris(hydroxymethyl)aminomethane strong inhibition of D-glucose isomerization, slight inhibition of D-xylose isomerization, competitive Weizmannia coagulans

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.1
-
D-xylose
-
Weizmannia coagulans
77
-
D-ribose
-
Weizmannia coagulans
90
-
D-glucose
-
Weizmannia coagulans

Metals/Ions

Metals/Ions Comment Organism Structure
Co2+ most effectively activates D-glucose isomerization and D-ribose isomerization Weizmannia coagulans
Mg2+ activates D-glucose isomerization, D-xylose isomerization and D-ribose isomerization Weizmannia coagulans
Mn2+ most effectively activates D-xylose isomerization Weizmannia coagulans

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
D-Xylose Weizmannia coagulans
-
?
-
?
D-Xylose Weizmannia coagulans HN-68
-
?
-
?

Organism

Organism UniProt Comment Textmining
Weizmannia coagulans
-
-
-
Weizmannia coagulans HN-68
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-Glucose
-
Weizmannia coagulans D-Fructose
-
?
D-Glucose
-
Weizmannia coagulans HN-68 D-Fructose
-
?
D-Ribose
-
Weizmannia coagulans ?
-
?
D-Ribose
-
Weizmannia coagulans HN-68 ?
-
?
D-Xylose
-
Weizmannia coagulans ?
-
?
D-Xylose
-
Weizmannia coagulans HN-68 ?
-
?
D-Xylose
-
Weizmannia coagulans D-Xylulose
-
?
D-Xylose
-
Weizmannia coagulans HN-68 D-Xylulose
-
?

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
additional information
-
Mn2+, Co2+ and Ni2+ strongly protect the enzyme from heat denaturation Weizmannia coagulans
50
-
1 h, stable Weizmannia coagulans
70
-
-
Weizmannia coagulans

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7
-
D-glucose Weizmannia coagulans
7
-
D-ribose Weizmannia coagulans
8 8.5 D-xylose Weizmannia coagulans

pH Stability

pH Stability pH Stability Maximum Comment Organism
4
-
50°C, 60 min, complete inactivation below Weizmannia coagulans
4.5
-
50°C, 60 min, 20% loss of activity Weizmannia coagulans
5 7 50°C, 60 min, stable Weizmannia coagulans
9
-
50°C, 60 min, 20% loss of activity Weizmannia coagulans