FlbB forms a distinctive ring essential for periplasmic flagellar assembly and motility in Borrelia burgdorferi. - Botting, Jack M.; Rahman, Md Khalesur; Xu, Hui; Yue, Jian; Guo, Wangbiao; Del Mundo, Joshua T.; Hammel, Michal; Motaleb, Md A.; Liu, Jun (PLoS Pathogens, 2025)