CC-333 er-u-37 mt+Locus: 23S rRNA, chloroplast genome
Source: From cross CC-148 er-u-37 sr-u-2-60 x CC-146 nr1-1 spr-u-1-6-2 mt-. This strain is resistant only to erythromycin.
Comment: This is a mt+ stock equivalent to CC-67 er-u-37 mt-. er-u-37 is a good chloroplast marker for erythromycin resistance, and has been used in many crosses. It maps to the center of the 23S rRNA gene, proximal to the intron.