Biology:Sphingomyelin deacylase

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Sphingomyelin deacylase
Identifiers
EC number3.5.1.109
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Sphingomyelin deacylase (EC 3.5.1.109, SM deacylase, GcSM deacylase, glucosylceramide sphingomyelin deacylase, sphingomyelin glucosylceramide deacylase, SM glucosylceramide GCer deacylase, SM-GCer deacylase, SMGCer deacylase) is an enzyme with systematic name N-acyl-sphingosylphosphorylcholine amidohydrolase.[1][2][3] This enzyme catalyses the following chemical reaction

(1) an N-acyl-sphingosylphosphorylcholine + H2O [math]\displaystyle{ \rightleftharpoons }[/math] a fatty acid + sphingosylphosphorylcholine;;
(2) a D-glucosyl-N-acylsphingosine + H2O [math]\displaystyle{ \rightleftharpoons }[/math] a fatty acid + D-glucosyl-sphingosine

The enzyme is involved in the sphingolipid metabolism in the epidermis.

References

  1. "High-expression of sphingomyelin deacylase is an important determinant of ceramide deficiency leading to barrier disruption in atopic dermatitis". The Journal of Investigative Dermatology 115 (3): 406–13. September 2000. doi:10.1046/j.1523-1747.2000.00072.x. PMID 10951276. 
  2. "The skin of atopic dermatitis patients contains a novel enzyme, glucosylceramide sphingomyelin deacylase, which cleaves the N-acyl linkage of sphingomyelin and glucosylceramide". The Biochemical Journal 350 Pt 3: 747–56. September 2000. doi:10.1042/0264-6021:3500747. PMID 10970788. 
  3. "Abnormal expression of the novel epidermal enzyme, glucosylceramide deacylase, and the accumulation of its enzymatic reaction product, glucosylsphingosine, in the skin of patients with atopic dermatitis". Laboratory Investigation; A Journal of Technical Methods and Pathology 83 (3): 397–408. March 2003. doi:10.1097/01.lab.0000059931.66821.92. PMID 12649340. 

External links