| 摘要 |
A gene coding for aa3 subunit I is obtained from a Corynebacterium glutamicum chromosomal DNA library by hybridization utilizing a probe produced based on a sequence common to a wide range of heme-copper enzymes. A gene coding for subunit II and a gene coding for subunit III are obtained by hybridization using a probe produced by using primers prepared based on the N-terminus amino acid sequence of subunit II, which is determined by using purified cytochrome aa3, and an operon coding for cytochrome bc1 complex existing downstream from the foregoing genes is further obtained.
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