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Literature summary for 3.2.1.52 extracted from

  • Jagadeesh, B.H.; Prabha, T.N.; Srinivasan, K.
    Multiple forms of beta-hexosaminidase in ripening tomato (Lycopersicum esculentum L.) (2006), Indian J. Plant Physiol., 11, 13-19.
No PubMed abstract available
Search for more literature for 3.2.1.52

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ isoenzyme I; isoenzyme II Solanum lycopersicum
Hg2+ isoenzyme I; isoenzyme II Solanum lycopersicum
Zn2+ isoenzyme I; isoenzyme II Solanum lycopersicum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.1
-
 p-nitrophenyl-beta-N-acetylglucosaminopyranoside isoenzyme II Solanum lycopersicum
1.6
-
 p-nitrophenyl-beta-N-acetylglucosaminopyranoside isoenzyme I Solanum lycopersicum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
additional information
-
 the molecular weight of isoenzyme I is higher than 94000 Da Solanum lycopersicum
64000
-
 isoenzyme II Solanum lycopersicum

Organism

Organism UniProt Comment Textmining
Solanum lycopersicum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
isoenzyme I Solanum lycopersicum
isoenzyme II Solanum lycopersicum

Source Tissue

Source Tissue Comment Organism Textmining
fruit specific activity of beta-acetylhexosaminidase increases during ripening with a peak at the climacteric stage, isoenzyme I Solanum lycopersicum
-
fruit specific activity of beta-acetylhexosaminidase increases during ripening with a peak at the climacteric stage, isoenzyme II Solanum lycopersicum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
p-nitrophenyl-beta-N-acetylglucosaminopyranoside + H2O
-
 Solanum lycopersicum 4-nitrophenol + N-acetyl-D-glucosamine
-
 ?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
47
-
 isoenzyme I Solanum lycopersicum
47 57 isoenzyme II Solanum lycopersicum

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
57
-
 15 min, 28% loss of activity, isoenzyme I Solanum lycopersicum
57
-
 15 min, no loss of activity, isoenzyme II Solanum lycopersicum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4.6
-
 isoenzyme II Solanum lycopersicum
5
-
 isoenzyme I Solanum lycopersicum