Biology:Thermospermine synthase

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Thermospermine synthase
Identifiers
EC number2.5.1.79
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Thermospermine synthase (EC 2.5.1.79, TSPMS, ACL5 (ACAULIS5), SAC51) is an enzyme with systematic name S-adenosylmethioninamine:spermidine 3-aminopropyltransferase (thermospermine synthesizing).[1][2][3] This enzyme catalyses the following chemical reaction

S-adenosylmethioninamine + spermidine [math]\displaystyle{ \rightleftharpoons }[/math] S-methyl-5'-thioadenosine + thermospermine + H+

This enzyme is required for correct xylem specification through regulation of the lifetime of the xylem elements.

References

  1. "Investigations about N-aminopropyl transferases probably involved in biomineralization". Journal of Physiology and Pharmacology 59 Suppl 5: 27–37. November 2008. PMID 19075322. 
  2. "Putative spermine synthases from Thalassiosira pseudonana and Arabidopsis thaliana synthesize thermospermine rather than spermine". FEBS Letters 581 (16): 3081–6. June 2007. doi:10.1016/j.febslet.2007.05.074. PMID 17560575. 
  3. "ACAULIS5 controls Arabidopsis xylem specification through the prevention of premature cell death". Development 135 (15): 2573–82. August 2008. doi:10.1242/dev.019349. PMID 18599510. 

External links