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Literature summary for 2.4.1.18 extracted from

  • Takeda, Y.; Guan, H.P.; Preiss, J.
    Branching of amylose by the branching isoenzymes of maize endosperm (1993), Carbohydr. Res., 240, 253-263.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information
-
Zea mays
2
-
amylose reduced amylose of an average chain-length 405, enzyme isoenzyme BE I Zea mays
10
-
amylose reduced amylose of an average chain-length 405, enzyme isoenzyme BE IIa Zea mays
11
-
amylose reduced amylose of an average chain-length 405, enzyme isoenzyme BE IIb Zea mays

Organism

Organism UniProt Comment Textmining
Zea mays
-
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
assay method Zea mays

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
amylose initially the three isoenzymes BE I, BE IIa and BE IIb produce chains of various sizes, DP approximately 8 to 200. Isoenzyme BE I preferentially transfers longer chains than isoenzyme IIa and IIb Zea mays amylose containing alpha-1,6-glucosidic linkages
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
15 20 isozyme BE IIb Zea mays
25
-
isozyme BE IIa Zea mays
33
-
isozyme BE I Zea mays

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
-
-
Zea mays