Article
Structural and mutational analysis of archaeal ATP-dependent RNA ligase identifies amino acids required for RNA binding and catalysis.
Nucleic acids research - 18 Mar 2016
Gu Huiqiong, Yoshinari Shigeo, Ghosh Raka, Ignatochkina Anna V, Gollnick Paul D, Murakami Katsuhiko S, Ho C Kiong
Abstract excerpt
An ATP-dependent RNA ligase from Methanobacterium thermoautotrophicum (MthRnl) catalyzes intramolecular ligation of single-stranded RNA to form a closed circular RNA via covalent ligase-AMP and RNA-adenylylate intermediate. Here, we report the X-ray crystal structures of an MthRnl•ATP complex as well as the covalent MthRnl-AMP intermediate. We also performed structure-guided mutational analysis to survey the...
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