Promoter recognition by a complex of Spx and the C-terminal domain of the RNA polymerase alpha subunit.
Nakano, M.M., Lin, A., Zuber, C.S., Newberry, K.J., Brennan, R.G., Zuber, P.(2010) PLoS One 5: e8664-e8664
- PubMed: 20084284 
- DOI: https://doi.org/10.1371/journal.pone.0008664
- Primary Citation of Related Structures:  
3IHQ - PubMed Abstract: 
Spx, an ArsC (arsenate reductase) family member, is a global transcriptional regulator of the microbial stress response and is highly conserved amongst Gram-positive bacteria. Bacillus subtilis Spx protein exerts positive and negative control of transcription through its interaction with the C-terminal domain of the RNA polymerase (RNAP) alpha subunit (alphaCTD). Spx activates trxA (thioredoxin) and trxB (thioredoxin reductase) in response to thiol stress, and bears an N-terminal C10XXC13 redox disulfide center that is oxidized in active Spx.
Organizational Affiliation: 
Department of Science & Engineering, School of Medicine, Oregon Health & Science University, Beaverton, Oregon, USA.