Nucleic Acids Res. 2005 Jan 7;33(1):135-42. doi:10.1093/nar/gki149

Blondal T, Thorisdottir A, Unnsteinsdottir U, Hjorleifsdottir S, Aevarsson A, Ernstsson S, Fridjonsson OH, Skirnisdottir S, Wheat JO, Hermannsdottir AG, Sigurdsson ST, Hreggvidsson GO, Smith AV, Kristjansson JK.

Isolation and characterization of a thermostable RNA ligase 1 from a Thermus scotoductus bacteriophage TS2126 with good single-stranded DNA ligation properties.

Preference for circularisation. Optimum : 65-70 °C, 25 µM ATP, pH 7.5-8, 10× more efficient than commercial ones.