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Literature summary extracted from

  • Masuda, H.; Takahashi, T.; Sugawara, S.
    The occurence and properties of alkaline invertase in mature roots of sugar beets (1987), Agric. Biol. Chem., 51, 2309-2314.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.26 Cu2+
-
 Beta vulgaris
3.2.1.26 fructose slight Beta vulgaris
3.2.1.26 Zn2+ slight inhibition Beta vulgaris

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.26 33.3
-
 sucrose
-
 Beta vulgaris

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.26 280000
-
 gel filtration Beta vulgaris

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.2.1.26 additional information Beta vulgaris alkaline invertase activity appears when the root begins to develop and simultaneously to synthesize sucrose - activity of enzyme form I is high during sucrose accumulation and the enzyme rapidly decreases when sucrose reaches a constant level, while the level of enzyme II activity is approximately constant ?
-
 ?
3.2.1.26 additional information Beta vulgaris acid invertase activity is very high in immature roots, but rapidly decreases before sucrose is stored and is hardly detectable in mature roots ?
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.26 Beta vulgaris
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.26 alkaline invertase, enzyme I and II, partial Beta vulgaris

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.1.26 root
-
 Beta vulgaris
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.26 2.465
-
-
 Beta vulgaris

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.26 additional information alkaline invertase activity appears when the root begins to develop and simultaneously to synthesize sucrose - activity of enzyme form I is high during sucrose accumulation and the enzyme rapidly decreases when sucrose reaches a constant level, while the level of enzyme II activity is approximately constant Beta vulgaris ?
-
 ?
3.2.1.26 additional information acid invertase activity is very high in immature roots, but rapidly decreases before sucrose is stored and is hardly detectable in mature roots Beta vulgaris ?
-
 ?
3.2.1.26 raffinose + H2O no activity Beta vulgaris fructose + melibiose
-
 ?
3.2.1.26 sucrose + H2O
-
 Beta vulgaris D-fructose + D-glucose
-
 ?

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.26 8
-
-
 Beta vulgaris