Abstract
Maf1 is a conserved inhibitor of RNA polymerase III (Pol III) that influences phenotypes ranging from metabolic efficiency to lifespan. Here, we present a 3.3-Å-resolution cryo-EM structure of yeast Maf1 bound to Pol III, establishing that Maf1 sequesters Pol III elements involved in transcription initiation and binds the mobile C34 winged helix 2 domain, sealing off the active site. The Maf1 binding site overlaps with that of TFIIIB in the preinitiation complex.
Original language | English (US) |
---|---|
Pages (from-to) | 229-232 |
Number of pages | 4 |
Journal | Nature Structural and Molecular Biology |
Volume | 27 |
Issue number | 3 |
DOIs | |
State | Published - Mar 1 2020 |
ASJC Scopus subject areas
- Structural Biology
- Molecular Biology