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
This enzyme is required for correct xylem specification through regulation of the lifetime of the xylem elements.
^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.
^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.
^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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Thermosperminesynthase (EC 2.5.1.79, TSPMS, ACL5 (ACAULIS5), SAC51) is an enzyme with systematic name S-adenosylmethioninamine:spermidine 3-aminopropyltransferase...
growth regulator. It is produced from spermidine by the action of thermosperminesynthase, which is encoded by a gene named ACAULIS5 (ACL5). The critical...
precursor to other polyamines, such as spermine and its structural isomer thermospermine. Spermidine synchronizes an array of biological processes, (such as...
This decarboxylation gives putrescine. Thereafter the enzyme spermidine synthase effects two N-alkylation by decarboxy-S-adenosyl methionine. The intermediate...
precursor to other polyamines, such as spermine and its structural isomer thermospermine. The active form of ornithine decarboxylase is a homodimer. Each monomer...