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Literature summary extracted from

  • Niladevi, K.; Jacob, N.; Prema, P.
    Evidence for a halotolerant-alkaline laccase in Streptomyces psammoticus: Purification and characterization (2008), Process Biochem., 43, 654-660.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.10.3.2 Cd2+ 21% inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 Co2+ 29% inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 DTT complete inhibition at 0.1 mM Kitasatospora aureofaciens
1.10.3.2 EDTA 87% inhibition at 1 mM, complete inhibition at 2 mM Kitasatospora aureofaciens
1.10.3.2 Hg2+ 14% inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 kojic acid 47% inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 L-cysteine 89% inhibition at 0.1 mM, complete inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 Mn2+ 22% inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 NaN3 complete inhibition at 0.1 mM Kitasatospora aureofaciens
1.10.3.2 Ni2+ 32% inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 thioglycolic acid 93% inhibition at 0.1 mM, complete inhibition at 1 mM Kitasatospora aureofaciens
1.10.3.2 Thiourea 73% inhibition at 5 mM Kitasatospora aureofaciens

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
1.10.3.2 Cu2+ activates, 148% at 2 mM Kitasatospora aureofaciens
1.10.3.2 Fe2+ activates, 204% at 2 mM Kitasatospora aureofaciens
1.10.3.2 Mg2+ activates, 137% at 2 mM Kitasatospora aureofaciens
1.10.3.2 additional information the enzyme activity is not affected by Ca2+ at 2 mM, and by NaCl up to 1.2 M Kitasatospora aureofaciens
1.10.3.2 Zn2+ activates, 146% at 2 mM Kitasatospora aureofaciens

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
1.10.3.2 43000
-
2 * 43000, SDS-PAGE Kitasatospora aureofaciens
1.10.3.2 70000 75000 gel filtration Kitasatospora aureofaciens

Organism

EC Number Organism UniProt Comment Textmining
1.10.3.2 Kitasatospora aureofaciens
-
-
-
1.10.3.2 Kitasatospora aureofaciens MTCC 7334
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
1.10.3.2 native enzyme 12.1fold to homogeneity by anion exchange chromatography and gel filtration Kitasatospora aureofaciens

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.10.3.2 21.6
-
purified enzyme Kitasatospora aureofaciens

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.10.3.2 1,8-diaminonaphthalene + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 2,6-dimethoxyphenol + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 catechol + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 catechol + O2
-
Kitasatospora aureofaciens MTCC 7334 ?
-
?
1.10.3.2 dopa + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 ferulic acid + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 gallic acid + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 gallic acid + O2
-
Kitasatospora aureofaciens MTCC 7334 ?
-
?
1.10.3.2 guaiacol + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 additional information substrate specificity, no activity with L-tyrosine, overview Kitasatospora aureofaciens ?
-
?
1.10.3.2 additional information substrate specificity, no activity with L-tyrosine, overview Kitasatospora aureofaciens MTCC 7334 ?
-
?
1.10.3.2 pyrogallol + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 pyrogallol + O2
-
Kitasatospora aureofaciens MTCC 7334 ?
-
?
1.10.3.2 resorcinol + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 syringaldazine + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 syringaldazine + O2
-
Kitasatospora aureofaciens MTCC 7334 ?
-
?
1.10.3.2 tannic acid + O2
-
Kitasatospora aureofaciens ?
-
?
1.10.3.2 vanillic acid + O2
-
Kitasatospora aureofaciens ?
-
?

Subunits

EC Number Subunits Comment Organism
1.10.3.2 dimer 2 * 43000, SDS-PAGE Kitasatospora aureofaciens

Synonyms

EC Number Synonyms Comment Organism
1.10.3.2 More the enzyme is a typical blue laccase Kitasatospora aureofaciens

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
1.10.3.2 45
-
-
Kitasatospora aureofaciens

Temperature Range [°C]

EC Number Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
1.10.3.2 25 60 40% of maximal activity at 25°C, maximal activity at 45°C, 90% of maximal activity at 50°C, 85% of maximal activity at 55°C, and 69% at 60°C Kitasatospora aureofaciens

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
1.10.3.2 20 50 purified enzyme, 90 min, completely stable Kitasatospora aureofaciens
1.10.3.2 60
-
purified enzyme, 90 min, 65% remaining activity Kitasatospora aureofaciens

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.10.3.2 8.5
-
-
Kitasatospora aureofaciens

pH Range

EC Number pH Minimum pH Maximum Comment Organism
1.10.3.2 4 10 activity range, 60-65% of maximal activity at pH 4.0 and pH 10.0, profile, overview Kitasatospora aureofaciens

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
1.10.3.2 2 10 purified enzyme, 90 min, stable at pH 6.5-9.5, 20% remaining activity at pH 2.0, 65% remaining activity at pH 4.0 and pH 10.0 Kitasatospora aureofaciens

pI Value

EC Number Organism Comment pI Value Maximum pI Value
1.10.3.2 Kitasatospora aureofaciens isoelectric focussing
-
7.9