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Literature summary for 3.1.3.1 extracted from

  • Homaei, A.
    Purification and biochemical properties of highly efficient alkaline phosphatase from Fenneropenaeus merguiensis brain (2015), J. Mol. Catal. B, 118, 16-22 .
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Ca2+ 83% residual activity at 5 mM Penaeus merguiensis
Cu2+ complete inhibition at 2 mM Penaeus merguiensis
Hg2+ complete inhibition at 2 mM Penaeus merguiensis
K+ 90% residual activity at 4 mM Penaeus merguiensis
Li+ 83% residual activity at 5 mM Penaeus merguiensis
Mg2+ 93% residual activity at 5 mM Penaeus merguiensis
Na+ 91% residual activity at 5 mM Penaeus merguiensis
Pb2+ complete inhibition at 2 mM Penaeus merguiensis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0003
-
4-nitrophenyl phosphate at pH 11.0 and 25°C Penaeus merguiensis

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ 125% activity at 2 mM Penaeus merguiensis
Mg2+ 123% activity at 1 mM Penaeus merguiensis

Organism

Organism UniProt Comment Textmining
Penaeus merguiensis
-
-
-

Purification (Commentary)

Purification (Comment) Organism
ammonium sulfate precipitation, DEAE-cellulose column chromatography, DEAE-Sephadex gel filtration, and Sephadex G-200 gel filtration Penaeus merguiensis

Source Tissue

Source Tissue Comment Organism Textmining
brain
-
Penaeus merguiensis
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4-nitrophenyl phosphate + H2O strongest affinity substrate Penaeus merguiensis 4-nitrophenol + phosphate
-
?

Subunits

Subunits Comment Organism
? x * 70000, SDS-PAGE Penaeus merguiensis

Synonyms

Synonyms Comment Organism
ALPase
-
Penaeus merguiensis

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
50
-
-
Penaeus merguiensis

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
30 70 the enzyme retains a high activity (more than 50%) in a wide temperature range from about 30-70°C. About 35% of its maximum phosphatase activity is retained at low (25°C) and very high (80°C) temperatures Penaeus merguiensis

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
95
-
4-nitrophenyl phosphate at pH 11.0 and 25°C Penaeus merguiensis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
11
-
-
Penaeus merguiensis

pH Range

pH Minimum pH Maximum Comment Organism
6 12 the enzyme retains a high activity (more than 50%) in the pH range from pH 6.0-12.0 Penaeus merguiensis

kcat/KM [mM/s]

kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
316600
-
4-nitrophenyl phosphate at pH 11.0 and 25°C Penaeus merguiensis