title: DNA sequence analysis of diuron-resistant mutations in the mitochondrial cytochrome b gene of Saccharomyces cerevisiae.
abstract: Diuron (3-[3,4-dichlorophenyl]-1,1-dimethylurea), an inhibitor of mitochondrial respiration, blocks the yeast respiratory chain between cytochrome b and c1. Diuron-resistant mutants of Saccharomyces cerevisiae have been selected and several mutations localized to the mitochondrial cytochrome b gene. The present paper identifies specific DNA base changes within the cytochrome b gene conferring diuron-resistance. DNA sequence analysis was done utilizing primer extension of crude mitochondrial RNA preparations in the presence of reverse transcriptase. Five independent diuron-resistant mutations have been sequenced.
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D003573:Cytochrome b Group / Q000235:genetics*; D004271:DNA, Fungal / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics; D004237:Diuron / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D009154:Mutation; D011487:Protein Conformation; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D013329:Structure-Activity Relationship
chemical_list: D003573:Cytochrome b Group; D004271:DNA, Fungal; D004272:DNA, Mitochondrial; D004237:Diuron