The qa-2+ gene has been widely used as a selectable marker in Neurospora transformations (Akins and Lambowitz 1985. Mol. Cell. Biol. 5:2272-2278). A plasmid (pMSN1) has been constructed to facilitate the cloning of selected genes into a qa-2+ vector. The system takes advantage of the blue/white screening possible when cloned fragments are inserted into the E. coli lacZ (beta-galactosidase) gene, and also facilitates subsequent sequencing of the cloned genes.
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Nelson, M. A.,
"A qa2+-pGEM vector for Neurospora transformations,"
Fungal Genetics Reports:
Vol. 39, Article 11.