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S7651

Sigma-Aldrich

Sphingomyelinase from Bacillus cereus

lyophilized powder, ≥100 units/mg protein

Synonym(s):

Sphingomyelin choline phosphohydrolase, Sphingomyelin phosphodiesterase

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About This Item

CAS Number:
9031-54-3
Enzyme Commission number:
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

Signal Word

Warning

Hazard Statements

H317

Hazard Classifications

Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Purification of a soil bacteria exotoxin using silkworm toxicity to measure specific activity
Usui K, et al.
Microbial Pathogenesis, 46(2), 59-62 (2009)
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)
Promotion of endocytosis efficiency through an ATP-independent mechanism at rat calyx of Held terminals
Yue HY, et al.
The Journal of Physiology, 595(15), 5265-5284 (2017)
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
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
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