A NOVEL RESTRICTION-ENDONUCLEASE UNBI, A NEOSCHIZOMER OF SAU96I FROM AN UNIDENTIFIED PSYCHROFILIC BACTERIUM FROM ANTARCTICA IS INHIBITED BYPHOSPHATE IONS
M. Kawalec et al., A NOVEL RESTRICTION-ENDONUCLEASE UNBI, A NEOSCHIZOMER OF SAU96I FROM AN UNIDENTIFIED PSYCHROFILIC BACTERIUM FROM ANTARCTICA IS INHIBITED BYPHOSPHATE IONS, Acta Biochimica Polonica, 44(4), 1997, pp. 849-852
A novel type II restriction endonuclease UnbI was isolated from an uni
dentified psychrofilic bacterial strain from Antarctica. UnbI recogniz
es and cleaves the sequence 5'-GGNCC-3', producing 5 nucleotide long s
ticky ends. In this respect it differs from its neoschizomer Sau96I an
d all other restriction enzymes recognizing this sequence. UnbI has a
relatively low temperature optimum of 15 degrees C to 20 degrees C and
its activity is completely inhibited by inorganic phosphate.