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. 2006 Dec;10(6):629-34.
doi: 10.1007/s00792-006-0019-0. Epub 2006 Aug 8.

Characterisation of the novel restriction endonuclease SuiI from Sulfolobus islandicus

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Characterisation of the novel restriction endonuclease SuiI from Sulfolobus islandicus

Stefan Söllner et al. Extremophiles. 2006 Dec.

Abstract

A restriction endonuclease activity from Sulfolobus islandicus REN2H1 was purified by phosphocellulose and cation exchange chromatography. The enzyme cuts DNA at the recognition site GCwGC as could be shown by restriction analysis of plasmids and short synthetic duplex DNA. The cleavage occurs after the first guanosine base and is inhibited by 5-methyl-cytosine methylation. The restriction activity is salt-sensitive and has an optimal activity around 70 degrees C.

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