An Mrp-like cluster in the halotolerant cyanobacterium Aphanothece halophytica functions as a Na+/H+ antiporter.

ABSTRACT: The mrp homolog gene cluster mrpCD1D2EFGAB (Ap-mrp) was found in a halotolerant cyanobacterium, Aphanothece halophytica, amplified, and expressed in Escherichia coli mutant TO114. Ap-mrp complemented the salt-sensitive phenotype of TO114 and exhibited Na(+)/H(+) and Li(+)/H(+) exchange activities, indicating that Ap-Mrp functions as a Na(+)/H(+) antiporter.

SUBMITTER: Fukaya F 

PROVIDER: S-EPMC2765133 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature