Wang, Ying Zhang, Yang Cui, Yijie Sun, Zhijian Zhou, Zutao Hu, Sishun Li, Shaowen Liu, Mei Meng, Xianrong Xiao, Yuncai Shi, Deshi Bi, Dingren Li, Zili Image_1_Identification of an Integrase That Responsible for Precise Integration and Excision of Riemerella anatipestifer Genomic Island.TIF <p>Riemerella anatipestifer is a Gram-negative, pathogenic bacterium, which is harmful to poultry. However, the genomic islands (GIs) in R. anatipestifer are not well-studied. In this study, a 10K genomic island was predicted by the bioinformatics analysis of R. anatipestifer ATCC 11845, which is widely found in other R. anatipestifer genomes. We had first reported the genomic island integration and excision function in R. anatipestifer. We successfully constructed the integration plasmid by using the integrase and 53 bp attP elements. The 10K GI was found integrated at the 53 bp attB located in the Arg-tRNA of the R. anatipestifer RA-YM chromosome. We identified an integrase that helped in the precise integration and excision in R. anatipestifer and elucidated the molecular mechanism of the 10K genomic island integration and excision. Furthermore, we provided a new method for the gene expression and construction of complementary strain.</p> Riemerella anatipestifer;genomic island;integrase;integration;excision;gene expression 2019-09-20
    https://frontiersin.figshare.com/articles/figure/Image_1_Identification_of_an_Integrase_That_Responsible_for_Precise_Integration_and_Excision_of_Riemerella_anatipestifer_Genomic_Island_TIF/9885719
10.3389/fmicb.2019.02099.s001