title: A shaE deletion mutant showed lower Na+ sensitivity compound to other deletion mutants in the Bacillus subtilis sodium/hydrogen antiporter (Sha) system.
abstract: The sodium/hydrogen antiporter (Sha, identical to multiple resistance and pH adaptation: Mrp) encoded by shaABCDEFG is considered to be the major Na+ excretion system in Bacillus subtilis. We constructed deletion mutants of each sha (=mrp) gene and found that a shaE mutant showed lower Na+ sensitivity compared to the other mutants with respect to the growth, sporulation and Na+ efflux activity. ShaE may have a dissimilar role to other Sha proteins in transport functions.
authors.affiliation: Molecular Microbial Functions Division, Bioscience Technology Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Toko
authors.initials: T
authors.lastname: Yoshinaka
authors.forename: Hirotoshi
authors.initials: H
authors.lastname: Takasu
authors.forename: Rui
authors.initials: R
authors.lastname: Tomizawa
authors.forename: Saori
authors.initials: S
authors.lastname: Kosono
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Kudo