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crnA encodes a nitrate transporter in Aspergillus nidulans.
Unkles SE, Hawker KL, Grieve C, Campbell EI, Montague P, Kinghorn JR. Unkles SE, et al. Proc Natl Acad Sci U S A. 1991 Jan 1;88(1):204-8. doi: 10.1073/pnas.88.1.204. Proc Natl Acad Sci U S A. 1991. PMID: 1986367 Free PMC article.