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Thermospermine synthase

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Thermospermine synthase
Identifiers
EC no.2.5.1.79
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
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PMCarticles
PubMedarticles
NCBIproteins

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 S-methyl-5'-thioadenosine + thermospermine + H+

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

References

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  1. ^ Romer P, Faltermeier A, Mertins V, Gedrange T, Mai R, Proff P (November 2008). "Investigations about N-aminopropyl transferases probably involved in biomineralization". Journal of Physiology and Pharmacology. 59 Suppl 5: 27–37. PMID 19075322.
  2. ^ Knott JM, Römer P, Sumper M (June 2007). "Putative spermine synthases from Thalassiosira pseudonana and Arabidopsis thaliana synthesize thermospermine rather than spermine". FEBS Letters. 581 (16): 3081–6. doi:10.1016/j.febslet.2007.05.074. PMID 17560575.
  3. ^ Muñiz L, Minguet EG, Singh SK, Pesquet E, Vera-Sirera F, Moreau-Courtois CL, Carbonell J, Blázquez MA, Tuominen H (August 2008). "ACAULIS5 controls Arabidopsis xylem specification through the prevention of premature cell death". Development. 135 (15): 2573–82. doi:10.1242/dev.019349. PMID 18599510.
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