2020 年 89 巻 2 号 p. 2_025-2_030
Two novel cry-type gene homologues, tentatively named cryPp1 and cryPp2, were detected in the genomic DNA of Paenibacillus popilliae ATCC 14706T, both of which were similar to genes encoding Cry18 proteins, suggesting their similar modes of action. Ours is the first report concerning multiple Cry homologues, detected from a sole strain of P. popilliae. In order to characterize the roles of the two Cry homologues in pathogenicity, a trial for the expression of recombinant proteins in Escherichia coli was conducted, which revealed that the opti- mization of rare codons, such as supplementation of tRNA genes, was necessary.
