A novel plasmid-encoded phage abortive infection system from Lactococcus lactis biovar. diacetylactis.
A 16-kb plasmid (pND859) was identified from Lactococcus lactis biovar. diacetylactis UK12922 which encodes phage resistance to the small isometric phage 712 when tested in L. lactis LM0230. The gene encoding phage abortive infection, designated abi-859, was localized on a 1.2-kb region which consists of an open reading frame (ORF) of 846 bp preceded by a potential ribosome-binding site and a putative promoter region. A helix-turn-helix region typical of DNA-binding motifs was identified near the N-terminal of the abi-859 product, suggesting a possible interaction with the phage DNA.
Deng
Y M
YM
Department of Biotechnology, University of New South Wales, Sydney, Australia.
Harvey
M L
ML
Liu
C Q
CQ
Dunn
N W
NW
D000595:Amino Acid Sequence; D001435:Bacteriophages / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D013294:Lactococcus lactis / Q000235:genetics* / Q000821:virology*; D008969:Molecular Sequence Data; D010957:Plasmids / Q000235:genetics*; D015183:Restriction Mapping; D017386:Sequence Homology, Amino Acid