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S7651

Sigma-Aldrich

Sphingomyelinase from Bacillus cereus

lyophilized powder, ≥100 units/mg protein

Sinónimos:

Sphingomyelin choline phosphohydrolase, Sphingomyelin phosphodiesterase

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About This Item

Número de CAS:
9031-54-3
Comisión internacional de enzimas:
3.1.4.12 (BRENDA, IUBMB)
EC Number:
232-869-9
MDL number:
MFCD00132362
UNSPSC Code:
12352204
NACRES:
NA.54

form

lyophilized powder

Quality Level

200

specific activity

≥100 units/mg protein

mol wt

36873 Da

composition

Protein, ~10% Lowry

storage temp.

2-8°C

Gene Information

Bacillus cereus ATCC 14579 ... BC0671(1203022)

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General description

Sphingomyelinase from Bacillus cereus (Bc-Smase) is a Mg2+-containing metalloenzyme. Bacillus cereus sphingomyelinase induces hemolysis of sheep erythrocytes.
Sphingomyelinase modulates adenosine triphosphate (ATP)-independent endocytosis of fibroblast and large vesicles of macrophages. Sphingomyelinase causes hemolysis of human erythrocytes. It is also a potent virulence factor leading to invasive diseases.

Application

Sphingomyelinase from Bacillus cereus has been used:
  • in the measurement of membrane capacitance in brain slices
  • for testing and confirming its silkworm-killing activity
  • in enzyme activity assay and for elucidating its effect on hydrolysis of sphingomyelin in complex lipid mixtures

Sphingomyelinase has been used in a study to investigate skeletal manifestations in pediatric and adult patients with Niemann Pick disease.

Biochem/physiol Actions

Initiates the formation of sphingomyelin-based second messengers. Activates MAPK (mitogen-activated protein kinase) and SAPKs (stress-activated protein kinases); generates ceramide from sphingomyelin.

Unit Definition

One unit will hydrolyze 1.0 μmole of TNPAL-sphingomyelin per min at pH 7.4 at 37 °C.

Physical form

Lyophilized powder containing potassium phosphate buffer salts and stabilizer.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H317

Hazard Classifications

Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Masataka Oda
Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan, 129(10), 1233-1238 (2009-10-03)
Bacillus cereus is one that causes of opportunistic human infections. Sphingomyelinase produced by B. cereus is assumed a virulence factor for the infection. Sphingomyelinase from Bacillus cereus (Bc-SMase) is Mg(2+)-containing metalloenzyme. Bc-SMase is a family of neutral SMase (nSMase) and
Masataka Oda et al.
Biochimica et biophysica acta, 1798(6), 1073-1080 (2010-03-11)
Bacillus cereus sphingomyelinase (Bc-SMase) induces hemolysis of sheep erythrocytes which contain large amounts of sphingomyelin. We investigated the mechanism of this hemolysis in comparison to that induced by Clostridium perfringens alpha-toxin. Pertussis toxin, a Gi-specific inhibitor, N-oleoylethernolamine, a ceramidase inhibitor
Lipid bilayers containing sphingomyelins and ceramides of varying N-acyl lengths: a glimpse into sphingolipid complexity
Jimenez-Rojo N, et al.
Biochimica et Biophysica Acta - Biomembranes, 1838(1), 456-464 (2014)
Purification of a soil bacteria exotoxin using silkworm toxicity to measure specific activity
Usui K, et al.
Microbial Pathogenesis, 46(2), 59-62 (2009)
Melissa Wasserstein et al.
Journal of inherited metabolic disease, 36(1), 123-127 (2012-06-22)
Niemann-Pick disease (NPD) due to acid sphingomyelinase deficiency is a lipid storage disease resulting from the accumulation of sphingomyelin, predominantly within cells of the monocyte-macrophage system. In contrast to other lysosomal storage disorders, skeletal involvement in NPD has not been
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