Enables the transfer of putrescine from one side of a membrane to the other. Putrescine is 1,4-diaminobutane, the polyamine formed by decarboxylation of ornithine and the metabolic precursor of spermidine and spermine.
pyridoxal transmembrane transporter activity
pyridoxamine transmembrane transporter activity
quaternary ammonium group transmembrane transporter activity +