Protein
Spermidine synthase
Function
Catalyzes the production of spermidine from putrescine and decarboxylated S-adenosylmethionine (dcSAM). Has a strong preference for putrescine as substrate, and has very low activity towards 1,3-diaminopropane. Has extremely low activity towards spermidine (By similarity).
Similarity
Belongs to the spermidine/spermine synthase family.
Sequence
MEPGPDGPAAPGPAAIREGWFRETCSLWPGQALSLQVEQLLHHRRSRYQDILVFRSKTYGNVLVLDGVIQCTERDEFSYQEMIANLPLCSHPNPRKVLIIGGGDGGVLREVVKHPSVESVVQCEIDEDVIEVSKKFLPGMAVGFSSSKLTLHVGDGFEFMKQNQDAFDVIITDSSDPMGPAESLFKESYYQLMKTALKEDGILCCQGECQWLHLDLIKEMRHFCKSLFPVVDYAYCSIPTYPSGQIGFMLCSKNPSTNFREPVQQLTQAQVEQMQLKYYNSDMHRAAFVLPEFTRKALNDIS