QCR9, the nuclear gene encoding a small subunit of the mitochondrial cytochrome bc1 complex, maps to the right arm of chromosome VII in Saccharomyces cerevisiae.

We present here mapping data for QCR9, a nuclear gene encoding a subunit of the ubiquinol-cytochrome c oxidoreductase complex. Deletion of QCR9 results in the inability of cells to grow on grow on-fermentable carbon sources at 37 degrees C. Thus, qcr9 mutants can be scored by growing cells on YPE/G at 37 degrees C, or followed by the URA3 marker, which was inserted when making the qcr9 deletion strain, JDP1. The location of QCR9 on the right arm of chromosome VII with respect to the previously mapped genes ADE3, SER2 and PET54 is given.