Download MendeleyStructure of the RNA-directed RNA Polymerase from the cystovirus 12.
Ren, Z., C Franklin, M., Ghose, R.(2013) Proteins 81: 1479-1484
- PubMed: 23568335
- DOI: https://doi.org/10.1002/prot.24297
- Primary Citation of Related Structures:
4GZK, 4IEG - PubMed Abstract:
We have determined the structure of P2, the self-priming RdRp from cystovirus φ12 in two crystal forms (A, B) at resolutions of 1.7 Å and 2.1 Å. Form A contains Mg(2+) bound at a site that deviates from the canonical noncatalytic position seen in form B. These structures provide insight into the temperature sensitivity of a ts-mutant. However, the tunnel through which template ssRNA accesses the active site is partially occluded by a flexible loop; this feature, along with suboptimal positioning of other structural elements that prevent the formation of a stable initiation complex, indicate an inactive conformation in crystallo.
Organizational Affiliation:
Department of Chemistry, The City College of New York, New York, New York 10031, USA.
