xanthine transmembrane transporter activity
Enables the transfer of xanthine from one side of a membrane to the other. Xanthine (2,6-dihydroxypurine) is a purine formed in the metabolic breakdown of guanine, but is not present in nucleic acids.
GO:0005345
purine nucleobase transmembrane transporter activity
is_a
SPAC1399.01c