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Literature summary for 2.4.1.10 extracted from

  • Ohtsuka, K.; Hino, S.; Fukushima, T.; Ozawa, O.; Kanematsu, T.; Uchida, T.
    Characterization of levansucrase from Rahnella aquatilis JCM-1683 (1992), Biosci. Biotechnol. Biochem., 56, 1373-1377.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Iodine slight inhibition Rahnella aquatilis
additional information hydroxylamine hydrochloride; not affected by 2-mercaptoethanol; not: EDTA Rahnella aquatilis
Ni2+ slight inhibition Rahnella aquatilis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
50
-
sucrose
-
Rahnella aquatilis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
64000
-
2 * 64000, SDS-PAGE Rahnella aquatilis
120000
-
gel filtration Rahnella aquatilis

Organism

Organism UniProt Comment Textmining
Rahnella aquatilis
-
strain JCM-1683
-
Rahnella aquatilis JCM -1683
-
strain JCM-1683
-

Purification (Commentary)

Purification (Comment) Organism
-
Rahnella aquatilis

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
731
-
purified enzyme Rahnella aquatilis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sucrose + (2,6-beta-D-fructosyl)n various D-fructosyl acceptors, overview Rahnella aquatilis glucose + (2,6-beta-D-fructosyl)n+1
-
?
sucrose + (2,6-beta-D-fructosyl)n various D-fructosyl acceptors, overview Rahnella aquatilis JCM -1683 glucose + (2,6-beta-D-fructosyl)n+1
-
?
sucrose + cellobiose
-
Rahnella aquatilis ?
-
?
sucrose + D-arabinose
-
Rahnella aquatilis ?
-
?
sucrose + D-maltose
-
Rahnella aquatilis ?
-
?
sucrose + D-maltose
-
Rahnella aquatilis JCM -1683 ?
-
?
sucrose + D-sorbitol
-
Rahnella aquatilis ?
-
?
sucrose + D-sorbitol
-
Rahnella aquatilis JCM -1683 ?
-
?
sucrose + D-xylose
-
Rahnella aquatilis ?
-
?
sucrose + D-xylose
-
Rahnella aquatilis JCM -1683 ?
-
?
sucrose + L-arabinose
-
Rahnella aquatilis ?
-
?
sucrose + lactose
-
Rahnella aquatilis ?
-
?
sucrose + lactose
-
Rahnella aquatilis JCM -1683 ?
-
?
sucrose + maltotriose
-
Rahnella aquatilis ?
-
?
sucrose + melibiose
-
Rahnella aquatilis ?
-
?

Subunits

Subunits Comment Organism
dimer 2 * 64000, SDS-PAGE Rahnella aquatilis

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
assay at Rahnella aquatilis
55 60 sucrose + D-xylose Rahnella aquatilis
60
-
-
Rahnella aquatilis

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
40
-
20 min, stable below Rahnella aquatilis
60
-
20 min, 50% loss of activity Rahnella aquatilis
70
-
20 min, complete loss of activity Rahnella aquatilis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
-
Rahnella aquatilis

pH Range

pH Minimum pH Maximum Comment Organism
3 10 almost no activity under pH 3.0 and above pH 10.0 Rahnella aquatilis

pH Stability

pH Stability pH Stability Maximum Comment Organism
5.5 9 30°C, 2 h, stable Rahnella aquatilis