Literature summary extracted from
Narayanavari, S.A.; Kishore, N.M.; Sritharan, M.
Structural analysis of the Leptospiral sphingomyelinases: in silico and experimental evaluation of Sph2 as an Mg++-dependent sphingomyelinase (2012), J. Mol. Microbiol. Biotechnol., 22, 24-34.
Cloned(Commentary)
EC Number |
Cloned (Comment) |
Organism |
---|
3.1.4.12 |
gene sph2, DNA and amino acid sequence determination and analysis, subcloning in Escherichia coli strains DH5alpha, recombinant expression in Escherichia coli strain BL21(DE3) in inclusion bodies |
Leptospira interrogans |
Inhibitors
EC Number |
Inhibitors |
Comment |
Organism |
Structure |
---|
3.1.4.12 |
Ca2+ |
inhibits the hemolytic enzyme activity |
Leptospira interrogans |
|
Metals/Ions
EC Number |
Metals/Ions |
Comment |
Organism |
Structure |
---|
3.1.4.12 |
Mg2+ |
dependent on, isozyme Sph2 is unique and possesses the Mg2+-binding Glu53 residue in the metal-binding site |
Leptospira interrogans |
|
Natural Substrates/ Products (Substrates)
EC Number |
Natural Substrates |
Organism |
Comment (Nat. Sub.) |
Natural Products |
Comment (Nat. Pro.) |
Rev. |
Reac. |
---|
3.1.4.12 |
a sphingomyelin + H2O |
Leptospira interrogans |
- |
a ceramide + phosphocholine |
a ceramide is an N-acylsphingosine |
? |
|
3.1.4.12 |
a sphingomyelin + H2O |
Leptospira interrogans 56601 |
- |
a ceramide + phosphocholine |
a ceramide is an N-acylsphingosine |
? |
|
Organism
EC Number |
Organism |
UniProt |
Comment |
Textmining |
---|
3.1.4.12 |
Leptospira interrogans |
P59116 |
serovar Lai, gene sph2 or LA_1029 encoding isozyme Sph2 |
- |
3.1.4.12 |
Leptospira interrogans 56601 |
P59116 |
serovar Lai, gene sph2 or LA_1029 encoding isozyme Sph2 |
- |
Purification (Commentary)
EC Number |
Purification (Comment) |
Organism |
---|
3.1.4.12 |
recombinant solubilized enzyme from Escherichia coli strain BL21(DE3) inclusion bodies by immunoaffinity chromatography |
Leptospira interrogans |
Renatured (Commentary)
EC Number |
Renatured (Comment) |
Organism |
---|
3.1.4.12 |
recombinant enzyme from Escherichia coli strain BL21(DE3) inclusion bodies is solubilized by 8 M urea |
Leptospira interrogans |
Substrates and Products (Substrate)
EC Number |
Substrates |
Comment Substrates |
Organism |
Products |
Comment (Products) |
Rev. |
Reac. |
---|
3.1.4.12 |
a sphingomyelin + H2O |
- |
Leptospira interrogans |
a ceramide + phosphocholine |
a ceramide is an N-acylsphingosine |
? |
|
3.1.4.12 |
a sphingomyelin + H2O |
- |
Leptospira interrogans 56601 |
a ceramide + phosphocholine |
a ceramide is an N-acylsphingosine |
? |
|
Synonyms
EC Number |
Synonyms |
Comment |
Organism |
---|
3.1.4.12 |
Mg++-dependent sphingomyelinase |
- |
Leptospira interrogans |
3.1.4.12 |
Sph2 |
- |
Leptospira interrogans |
General Information
EC Number |
General Information |
Comment |
Organism |
---|
3.1.4.12 |
evolution |
the enzyme belongs to the DNase I superfamily, which contains the exo-endo-phosphatase domain, the domain lacks only in isozyme Sph4, all isozymes lack the beta-hairpin loop, the organism encodes genes Sph1, Sph2, Sph3, Sph4 and SphH, structure comparisons, overview |
Leptospira interrogans |
3.1.4.12 |
additional information |
isozyme Sph2 structure homology modeling, the isozyme Sph2 is unique and possesses the Mg2+-binding Glu53 residue in the metal-binding site and two His residues, His151 and His286, in the catalytic site |
Leptospira interrogans |
3.1.4.12 |
physiological function |
the recombinant isozyme Sph2 performs the Mg2+ -dependent hemolysis of erythrocytes |
Leptospira interrogans |