AF_AFB4SU91F1

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Polyamine aminopropyltransferase	spermidine synthase activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity	polyamine metabolic process amine metabolic process biogenic amine biosynthetic process spermidine metabolic process biosynthetic process amine biosynthetic process polyamine biosynthetic process metabolic process cellular process spermidine biosynthetic process biogenic amine metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

Chains	Accession	Name	Type
A	IPR001045	Spermidine/spermine synthases	Family
A	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A	IPR030374	Polyamine biosynthesis domain	Domain
A	IPR037163	Spermidine synthase, tetramerisation domain superfamily	Homologous Superfamily
A	IPR030373	Polyamine biosynthesis domain, conserved site	Conserved Site
A	IPR035246	Spermidine synthase, tetramerisation domain	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.