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Systematic name YFL036W
Gene name RPO41
Feature type ORF, Verified
Coordinates Chr VI:58782..62837
Primary SGDID S000001858

Description of YFL036W: Mitochondrial RNA polymerase; single subunit enzyme similar to those of T3 and T7 bacteriophages; requires a specificity subunit encoded by MTF1 for promoter recognition; Mtf1p interacts with and stabilizes the Rpo41p-promoter complex, enhancing DNA bending and melting to facilitate pre-initiation open complex formation[1][2][3]


Community Commentary

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Two Hybrid

Two Hybrid interaction with MTF2
The mitochondrial matrix protein Mtf2p/Nam1p interacts with the amino-terminal domain of mtRNA polymerase (Rpo41p) to couple post-transcriptional events to transcription during mitochondrial gene expression. [4] [5]

Protein Details

Protein Function/Process

The amino-terminal extension of Rpo41p contains a functional domain that is dispensible for transcription initiation, but is required for mtDNA stability, suggesting that additional activities are coupled to transcription during mitochondrial gene expression and/or mtDNA replication. [6] [7]



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  1. Greenleaf AL, et al. (1986) Yeast RPO41 gene product is required for transcription and maintenance of the mitochondrial genome. Proc Natl Acad Sci U S A 83(10):3391-4 SGD PMID 3517858
  2. Tang GQ, et al. (2011) Transcription factor-dependent DNA bending governs promoter recognition by the mitochondrial RNA polymerase. J Biol Chem () SGD PMID 21911502
  3. Velazquez G, et al. (2012) Conservation of Promoter Melting Mechanisms in Divergent Regions of the Single-Subunit RNA Polymerases. Biochemistry () SGD PMID 22524540
  4. Rodeheffer MS, et al. (2001) Nam1p, a protein involved in RNA processing and translation, is coupled to transcription through an interaction with yeast mitochondrial RNA polymerase. J Biol Chem 276(11):8616-22 SGD PMID 11118450
  5. submitted by Gerald Shadel on 2003-06-05
  6. Wang Y and Shadel GS (1999) Stability of the mitochondrial genome requires an amino-terminal domain of yeast mitochondrial RNA polymerase. Proc Natl Acad Sci U S A 96(14):8046-51 SGD PMID 10393945
  7. submitted by Gerald Shadel on 2003-06-06

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