Article
The P4 metal binding site in RNase P RNA affects active site metal affinity through substrate positioning.
RNA (New York, N.Y.) - 1 Aug 2006
Christian Eric L, Smith Kari M J, Perera Nicholas, Harris Michael E
Abstract excerpt
Although helix P4 in the catalytic domain of the RNase P ribozyme is known to coordinate magnesium ions important for activity, distinguishing between direct and indirect roles in catalysis has been difficult. Here, we provide evidence for an indirect role in catalysis by showing that while the universally conserved bulge of helix P4 is positioned 5 nt downstream of the cleavage site, changes in its structure can...
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