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Literature summary extracted from

  • Oikawa, A.; Itoh, E.; Ishihara, A.; Iwamura, H.
    Purification and characterization of beta-N-acetylhexosaminidase from maize seedlings (2003), J. Plant Physiol., 160, 991-999.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.52 AgNO3 5 mM, 93% inhibition Zea mays
3.2.1.52 CuCl2 5 mM, 37% inhibition Zea mays
3.2.1.52 FeCl3 5 mM, 90% inhibition Zea mays
3.2.1.52 HgCl2 5 mM, 96% inhibition Zea mays

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
3.2.1.52 AlCl3 5 mM, activation to 124% Zea mays
3.2.1.52 CaCl2 5 mM, activation to 116% Zea mays
3.2.1.52 KCl 5 mM, activation to 111% Zea mays

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.52 66000
-
 gel filtration Zea mays
3.2.1.52 70000
-
 1 * 70000, SDS-PAGE Zea mays

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.52 Zea mays
-
 L. cv. Snowdent 110
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.52
-
 Zea mays

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.1.52 embryo
-
 Zea mays
-
3.2.1.52 scutellum
-
 Zea mays
-
3.2.1.52 seed substantial activity detected in dry seed. Activity increases before germination but exclusively in the embryo Zea mays
-
3.2.1.52 seedling most of the activity is found in the scutellum, and lower levels in shoots and roots Zea mays
-
3.2.1.52 shoot
-
 Zea mays
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.52 additional information
-
-
 Zea mays

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.52 chitin + H2O release of GlcNAc after 24 h Zea mays GlcNAc + ?
-
 ?
3.2.1.52 additional information no activity with oligo-sugar I, oligo-sugar II and ovalbumin Zea mays ?
-
 ?
3.2.1.52 N,N',N'',N''',N''''-pentaacetylchitopentaose + H2O
-
 Zea mays N-acetyl-D-glucosamine + ?
-
 ?
3.2.1.52 N,N',N'',N'''-tetraacetylchitotetraose + H2O
-
 Zea mays N-acetyl-D-glucosamine + ?
-
 ?
3.2.1.52 N,N',N''-triacetylchitotriose + H2O
-
 Zea mays N-acetyl-D-glucosamine + N,N'-diacetylchiotobiose
-
 ?
3.2.1.52 N,N'-diacetylchitobiose + H2O
-
 Zea mays deacetylated chitooligosaccharides + acetate
-
 ?
3.2.1.52 p-nitrophenyl-N-acetyl-beta-D-galactosaminide + H2O 7.39% of the activity with (GlcNAc)2 Zea mays p-nitrophenol + N-acetyl-beta-D-galactosamine
-
 ?
3.2.1.52 p-nitrophenyl-N-acetyl-beta-D-glucosaminide + H2O 5.95% of the activity with (GlcNAc)2 Zea mays p-nitrophenol + N-acetyl-beta-D-glucosamine
-
 ?

Subunits

EC Number Subunits Comment Organism
3.2.1.52 monomer 1 * 70000, SDS-PAGE Zea mays

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.52 55
-
 reaction with (GlcNAc)2 Zea mays

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.52 4.5
-
-
 Zea mays

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.2.1.52 3.5 6 50% of maximal activcity at pH 3.5 and pH 6.0 Zea mays

pI Value

EC Number Organism Comment pI Value Maximum pI Value
3.2.1.52 Zea mays chromatofocusing
-
 6