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Literature summary for 2.4.1.24 extracted from

  • Kobrehel, D.; Deponte, R.
    Proteolytic inactivation of 1,4-alpha-D-glucan 6-alpha-D-glucosyltransferase purified from Aspergillus niger R-27 (1982), Enzyme Microb. Technol., 4, 185-190.
No PubMed abstract available

General Stability

General Stability Organism
sensitive on digestion with subtilisin, 50% inactivation, thermolabile product Aspergillus niger

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.18
-
maltotriose
-
Aspergillus niger
0.67
-
maltose
-
Aspergillus niger
2.84
-
panose
-
Aspergillus niger
4.54
-
isomaltose
-
Aspergillus niger

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
101000
-
gel filtration Aspergillus niger
109000
-
SDS-PAGE Aspergillus niger

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
D-glucose Aspergillus niger synthesis of glucose oligomers glucose oligomers
-
r
D-glucose Aspergillus niger R-27 synthesis of glucose oligomers glucose oligomers
-
r

Organism

Organism UniProt Comment Textmining
Aspergillus niger
-
-
-
Aspergillus niger R-27
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein 16% D-mannose, 0.1% D-glucose, 2.95% 2-acetamido-2-deoxy-D-glucose Aspergillus niger

Purification (Commentary)

Purification (Comment) Organism
-
Aspergillus niger

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-glucose
-
Aspergillus niger glucose oligomers
-
r
D-glucose synthesis of glucose oligomers Aspergillus niger glucose oligomers
-
r
D-glucose
-
Aspergillus niger R-27 glucose oligomers
-
r
D-glucose synthesis of glucose oligomers Aspergillus niger R-27 glucose oligomers
-
r
isomaltose
-
Aspergillus niger D-glucose
-
r
isomaltose
-
Aspergillus niger R-27 D-glucose
-
r
maltose reverse reaction of glucose oligomer synthesis Aspergillus niger D-glucose + isomaltose + panose only glucose detected as reaction product r
maltose reverse reaction of glucose oligomer synthesis Aspergillus niger R-27 D-glucose + isomaltose + panose only glucose detected as reaction product r
maltotriose
-
Aspergillus niger D-glucose
-
r
maltotriose
-
Aspergillus niger R-27 D-glucose
-
r
panose
-
Aspergillus niger D-glucose
-
r

Subunits

Subunits Comment Organism
monomer 1 * 101000, gel filtration Aspergillus niger

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4.5
-
-
Aspergillus niger