sym-Homospermidine, a naturally occurring polyamine

Unusual Polyamines from Baikalian Diatoms

“…in this article] ). Some plants, algae and bacteria contain homospermidine, which consists of two butylamine residues. The biosynthesis of homospermidine proceeds under the action of homospermidine synthase,, which catalyzes the condensation of two putrescine molecules or the reaction between putrescine and spermidine.…”

Unusual Polyamines from Baikalian Diatoms

“…in this article] ). Some plants, algae and bacteria contain homospermidine, which consists of two butylamine residues. The biosynthesis of homospermidine proceeds under the action of homospermidine synthase,, which catalyzes the condensation of two putrescine molecules or the reaction between putrescine and spermidine.…”

Distribution and Metabolism of sym-Homospermidine and Canavalmine in the Sword Bean Canavalia gladiata cv Shironata

“…Assuming that this is true, the enzyme systems which transfer the aminobutyl moiety to PUT or to SPD must be present in sword bean seed. The pathway of homoSPD synthesis from two molecules of PUT via Shifts base formation has been proposed by several workers (15,25,26). However, a selective aminobutyl transfer reaction to the aminopropyl group of SPD has not been hitherto recognized.…”

Temperature‐dependent changes of amine levels during early seedling development of the cold‐adapted subantarctic crucifer Pringlea antiscorbutica

“…High levels of HSpd were found in the thermophilic eubacterium Thermus (Oshima and Baba 1981), in the N 2 ‐fixing eubacterium Rhizobium (Smith 1977) and in some methanogenic archaebacteria (Scherer and Kneifel 1983). This long‐chain polyamine has been barely detected in plants, for example, in Santalum album L. (Kuttan et al 1971) and leguminous seeds (Hamana et al 1992), although it is an obligate precursor of the widespread pyrrolizidine alkaloids (Ober and Hartmann 1999). Interestingly, we detected HSpd in another endemic, unrelated plant species from Kerguelen, Lyallia kerguelensis (Hennion and Martin‐Tanguy 1999).…”

Unusual Polyamines from Baikalian Diatoms

“…in this article] ). Some plants, algae and bacteria contain homospermidine, which consists of two butylamine residues. The biosynthesis of homospermidine proceeds under the action of homospermidine synthase,, which catalyzes the condensation of two putrescine molecules or the reaction between putrescine and spermidine.…”

Distribution and Metabolism of sym-Homospermidine and Canavalmine in the Sword Bean Canavalia gladiata cv Shironata

“…Assuming that this is true, the enzyme systems which transfer the aminobutyl moiety to PUT or to SPD must be present in sword bean seed. The pathway of homoSPD synthesis from two molecules of PUT via Shifts base formation has been proposed by several workers (15,25,26). However, a selective aminobutyl transfer reaction to the aminopropyl group of SPD has not been hitherto recognized.…”

Temperature‐dependent changes of amine levels during early seedling development of the cold‐adapted subantarctic crucifer Pringlea antiscorbutica

“…High levels of HSpd were found in the thermophilic eubacterium Thermus (Oshima and Baba 1981), in the N 2 ‐fixing eubacterium Rhizobium (Smith 1977) and in some methanogenic archaebacteria (Scherer and Kneifel 1983). This long‐chain polyamine has been barely detected in plants, for example, in Santalum album L. (Kuttan et al 1971) and leguminous seeds (Hamana et al 1992), although it is an obligate precursor of the widespread pyrrolizidine alkaloids (Ober and Hartmann 1999). Interestingly, we detected HSpd in another endemic, unrelated plant species from Kerguelen, Lyallia kerguelensis (Hennion and Martin‐Tanguy 1999).…”

Unusual Polyamines from Baikalian Diatoms

“…in this article] ). Some plants, algae and bacteria contain homospermidine, which consists of two butylamine residues. The biosynthesis of homospermidine proceeds under the action of homospermidine synthase,, which catalyzes the condensation of two putrescine molecules or the reaction between putrescine and spermidine.…”

Distribution and Metabolism of sym-Homospermidine and Canavalmine in the Sword Bean Canavalia gladiata cv Shironata

“…Assuming that this is true, the enzyme systems which transfer the aminobutyl moiety to PUT or to SPD must be present in sword bean seed. The pathway of homoSPD synthesis from two molecules of PUT via Shifts base formation has been proposed by several workers (15,25,26). However, a selective aminobutyl transfer reaction to the aminopropyl group of SPD has not been hitherto recognized.…”

Temperature‐dependent changes of amine levels during early seedling development of the cold‐adapted subantarctic crucifer Pringlea antiscorbutica

“…High levels of HSpd were found in the thermophilic eubacterium Thermus (Oshima and Baba 1981), in the N 2 ‐fixing eubacterium Rhizobium (Smith 1977) and in some methanogenic archaebacteria (Scherer and Kneifel 1983). This long‐chain polyamine has been barely detected in plants, for example, in Santalum album L. (Kuttan et al 1971) and leguminous seeds (Hamana et al 1992), although it is an obligate precursor of the widespread pyrrolizidine alkaloids (Ober and Hartmann 1999). Interestingly, we detected HSpd in another endemic, unrelated plant species from Kerguelen, Lyallia kerguelensis (Hennion and Martin‐Tanguy 1999).…”