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Literature summary for 3.2.1.26 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
Search for more literature for 3.2.1.26

Inhibitors

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

KM Value [mM]

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

Molecular Weight [Da]

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

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
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 ?
-
 ?
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

Organism UniProt Comment Textmining
Beta vulgaris
-
-
-

Purification (Commentary)

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

Source Tissue

Source Tissue Comment Organism Textmining
root
-
 Beta vulgaris
-

Specific Activity [micromol/min/mg]

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

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
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 ?
-
 ?
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 ?
-
 ?
raffinose + H2O no activity Beta vulgaris fructose + melibiose
-
 ?
sucrose + H2O
-
 Beta vulgaris D-fructose + D-glucose
-
 ?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
-
 Beta vulgaris