Download MendeleyStructure of T7 RNA polymerase complexed to the transcriptional inhibitor T7 lysozyme.
Jeruzalmi, D., Steitz, T.A.(1998) EMBO J 17: 4101-4113
- PubMed: 9670025
- DOI: https://doi.org/10.1093/emboj/17.14.4101
- Primary Citation of Related Structures:
1ARO - PubMed Abstract:
The T7 RNA polymerase-T7 lysozyme complex regulates phage gene expression during infection of Escherichia coli. The 2.8 A crystal structure of the complex reveals that lysozyme binds at a site remote from the polymerase active site, suggesting an indirect mechanism of inhibition. Comparison of the T7 RNA polymerase structure with that of the homologous pol I family of DNA polymerases reveals identities in the catalytic site but also differences specific to RNA polymerase function. The structure of T7 RNA polymerase presented here differs significantly from a previously published structure. Sequence similarities between phage RNA polymerases and those from mitochondria and chloroplasts, when interpreted in the context of our revised model of T7 RNA polymerase, suggest a conserved fold.
Organizational Affiliation:
Department of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, CT 06520-8114, USA.
