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Literature summary for 3.1.4.12 extracted from

  • Ikezawa, H.; Mori, M.; Ohyabu, T.; Taguchi, R.
    Studies on sphingomyelinase of Bacillus cereus. I. Purification and properties (1978), Biochim. Biophys. Acta, 528, 247-256.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
deoxycholate 3fold stimulation at concentrations above 0.1% Bacillus cereus

Inhibitors

Inhibitors Comment Organism Structure
Ca2+ completely inhibited at 5 mM CaCl2 Bacillus cereus
EDTA complete inhibition at 0.25 mM Bacillus cereus

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Bacillus cereus
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ partly restores the EDTA-inhibited enzyme activity Bacillus cereus
Mg2+ causes basal activation, reverses EDTA inhibition Bacillus cereus
Zn2+ partly restores the EDTA-inhibited enzyme activity Bacillus cereus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
24000
-
gel filtration Bacillus cereus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
sphingomyelin + H2O Bacillus cereus
-
?
-
?

Organism

Organism UniProt Comment Textmining
Bacillus cereus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
980fold Bacillus cereus

Source Tissue

Source Tissue Comment Organism Textmining
culture medium
-
Bacillus cereus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
different assay conditions, substrates etc. Bacillus cereus

Storage Stability

Storage Stability Organism
4°C for 24 h, at pH 6-7.5 Bacillus cereus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
lysophosphatidylcholine + H2O
-
Bacillus cereus 1-acylglycerol + choline phosphate
-
?
sphingomyelin + H2O
-
Bacillus cereus N-acylsphingosine + choline phosphate
-
?
sphingomyelin + H2O
-
Bacillus cereus ?
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
-
Bacillus cereus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6 7
-
Bacillus cereus

pH Stability

pH Stability pH Stability Maximum Comment Organism
6 7.5
-
Bacillus cereus