tRNAHis guanylyltransferase (THG1), a unique 3'-5' nucleotidyl transferase, shares unexpected structural homology with canonical 5'-3' DNA polymerases.
Hyde, S.J., Eckenroth, B.E., Smith, B.A., Eberley, W.A., Heintz, N.H., Jackman, J.E., Doublie, S.(2010) Proc.Natl.Acad.Sci.USA 107: 20305-20310
- PubMed: 21059936 
- DOI: 10.1073/pnas.1010436107
- Primary Citation of Related Structures:  
- PubMed Abstract: 
All known DNA and RNA polymerases catalyze the formation of phosphodiester bonds in a 5' to 3' direction, suggesting this property is a fundamental feature of maintaining and dispersing genetic information. The tRNA(His) guanylyltransferase (Thg1) is ...