1887

Abstract

Fifty-five haemin-requiring mutants were isolated from haemin-permeable mutants. According to their growth responses to haem precursors and their patterns of porphyrin accumulation, the 55 mutants fell into three groups which were judged to have defects in 5-aminolaevulinate dehydratase, ferrochelatase, and uroporphyrinogen III cosynthase or uroporphyrinogen decarboxylase. In mutants of the group deficient in 5-aminolaevulinate dehydratase, the mutations were adjacent to , and evidence is presented that the mutations were in and were commonly deletions extending into

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/content/journal/micro/10.1099/00221287-113-1-155
1979-07-01
2020-01-22
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http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-113-1-155
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