fcyB — Aspergillus nidulans FGSC A4

Summary

ANIA_06783 (fcyB) on chromosome 1 of Aspergillus nidulans FGSC A4 encodes an uncharacterized protein with a purine-cytosine permease domain and transmembrane transporter activity. The gene is associated with purine base transport, endocytosis, and response to ammonia, and its product localises to the plasmalemma. Related genes in other species encode purine-cytosine permeases FCY2, FCY21, and FCY22, linking the family to the uptake of purine and cytosine bases, though this specific role is not yet established for fcyB.