Identification of an alternative oxidase induction motif in the promoter region of the aod-1 gene in Neurospora crassa.

ABSTRACT: The nuclear aod-1 gene of Neurospora crassa encodes the alternative oxidase and is induced when the standard cytochrome-mediated respiratory chain of mitochondria is inhibited. To study elements of the pathway responsible for alternative oxidase induction, we generated a series of mutations in the region upstream from the aod-1 structural gene and transformed the constructs into an aod-1 mutant strain. Transformed conidia were plated on media containing antimycin A, which inhibits the cytochrome-mediated electron transport chain so that only cells expressing alternative oxidase will grow. Using this functional in vivo assay, we identified an alternative oxidase induction motif (AIM) that is required for efficient expression of aod-1. The AIM sequence consists of two CGG repeats separated b

SUBMITTER: Chae MS 

PROVIDER: S-EPMC1855127 | biostudies-literature | 2007 Apr

REPOSITORIES: biostudies-literature