https://www.ncbi.nlm.nih.gov/protein/4TVB_B
Chain B, Homospermidine synthase - Protein - NCBI
chainbprotein
https://pmc.ncbi.nlm.nih.gov/articles/PMC24724/
Homospermidine synthase, the first pathway-specific enzyme of pyrrolizidine alkaloid biosynthesis,...
Pyrrolizidine alkaloids are preformed plant defense compounds with sporadic phylogenetic distribution. They are thought to have evolved in response to the...
the firstpathway
https://pubmed.ncbi.nlm.nih.gov/24005181/
Occurrence of homospermidine and thermospermine as a cellular polyamine in unicellular chlorophyte...
Occurrence of homospermidine and thermospermine as a cellular polyamine in unicellular chlorophyte and multicellular charophyte green algae
as a