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  • Title: Sequencing and characterization of plasmid pUIBI-1 from Bacillus thuringiensis serovar entomocidus LBIT-113.
    Author: López-Meza JE, Barboza-Corona JE, Del Rincón-Castro MC, Ibarra JE.
    Journal: Curr Microbiol; 2003 Nov; 47(5):395-9. PubMed ID: 14669916.
    Abstract:
    Plasmid pUIBI-1 from Bacillus thuringiensis svr. entomocidus was sequenced and its replication mechanism analyzed. Sequence analysis revealed that pUIBI-1 contains 4671 bp and a 32% GC content. Plasmid pUIBI-1 also includes at least seven putative open reading frames (ORFs) encoding for proteins ranging from 5 to 50 kDa. ORF-1 encodes for a putative 16-kDa Rep protein, which lacks homology with proteins of similar function. ORF2 encodes for a protein of 50 kDa and shows homology with Mob proteins of plasmids pLUB1000 from Lactobacillus hilgardii (32.2%) and pGI2 from B. thuringiensis (33.7%). Detection of single-stranded DNA (ssDNA) intermediates indicated that pUIBI-1 replicates by the rolling-circle replication mechanism, as demonstrated by S1 treatment and Southern hybridization under non-denaturing conditions.
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