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Literature summary for 3.2.1.52 extracted from

  • Sakai, T.; Nakanishi, Y.; Kato, I.
    Purification and characterization of beta-N-acetyl-D-hexosaminidase from the mid-gut gland of scallop (Patinopecten yessoensis) (1993), Biosci. Biotechnol. Biochem., 57, 965-968.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
NaCl concentration of 0.2-1.5 M activates hydrolysis of p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside and -galactosaminide about 40% and 80% Mizuhopecten yessoensis
NaCl 0.3-1.0 M causes activation of about 140% Turbo cornutus

Inhibitors

Inhibitors Comment Organism Structure
Ag+ concentration of 2 mM causes 70.9% inhibition Mizuhopecten yessoensis
Fe2+ concentration of 2 mM causes 7.8% inhibition Mizuhopecten yessoensis
Fe3+ concentration of 2 mM causes 53.1% inhibition Mizuhopecten yessoensis
Hg2+ concentration of 2 mM causes 98.9% inhibition Mizuhopecten yessoensis
N-acetyl-D-galactosamine
-
Mizuhopecten yessoensis
N-acetyl-D-glucosamine
-
Mizuhopecten yessoensis
p-chloromercuribenzoate concentration of 2 mM causes 28.5% inhibition Mizuhopecten yessoensis
Sodium acetate concentration of 60 mM causes 80% inhibition Mizuhopecten yessoensis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.15
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside
-
Mizuhopecten yessoensis
0.24
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside
-
Mizuhopecten yessoensis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
56000
-
SDS-PAGE Mizuhopecten yessoensis

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
N-acetyl-beta-D-hexosaminides + H2O Mizuhopecten yessoensis
-
N-acetyl-D-hexosamines
-
?
N-acetyl-beta-D-hexosaminides + H2O Turbo cornutus
-
N-acetyl-D-hexosamines
-
?

Organism

Organism UniProt Comment Textmining
Mizuhopecten yessoensis
-
-
-
Turbo cornutus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
7.6fold Mizuhopecten yessoensis

Source Tissue

Source Tissue Comment Organism Textmining
hepatopancreas
-
Mizuhopecten yessoensis
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
42.5
-
substrate: p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside Mizuhopecten yessoensis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4-nitrophenyl 2-acetamido-2-deoxy-6-O-sulfo-beta-D-glucopyranoside + H2O poor substrate Mizuhopecten yessoensis 4-nitrophenol + 2-acetamido-2-deoxy-6-O-sulfo-beta-D-glucopyranose
-
?
4-nitrophenyl beta-D-galactopyranoside + H2O poor substrate Mizuhopecten yessoensis 4-nitrophenol + beta-D-galactopyranose
-
?
additional information
-
Mizuhopecten yessoensis ?
-
?
N-acetyl-beta-D-hexosaminides + H2O
-
Mizuhopecten yessoensis N-acetyl-D-hexosamines
-
?
N-acetyl-beta-D-hexosaminides + H2O
-
Turbo cornutus N-acetyl-D-hexosamines
-
?
p-nitrophenyl-alpha-L-rhamnopyranoside + H2O poor substrate Mizuhopecten yessoensis 4-nitrophenol + alpha-L-rhamnopyranoside
-
?
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside + H2O
-
Mizuhopecten yessoensis 2-acetamido-2-deoxy-D-galactose + p-nitrophenol
-
?
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside + H2O
-
Mizuhopecten yessoensis 2-acetamido-2-deoxy-D-glucose + p-nitrophenol
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
45 50 substrate: p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside or -glucosaminide Mizuhopecten yessoensis

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
-
40 at pH 4.5 Mizuhopecten yessoensis

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
37
-
stable for 60 min at pH 3.5-5.5 Mizuhopecten yessoensis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3.4
-
substrate: p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside Mizuhopecten yessoensis
3.7
-
substrate: p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside Mizuhopecten yessoensis

pH Stability

pH Stability pH Stability Maximum Comment Organism
3.5 5.5 stable Mizuhopecten yessoensis