Ontology highlight
ABSTRACT:
SUBMITTER: Ermolova N
PROVIDER: S-EPMC193537 | biostudies-literature | 2003 Sep
REPOSITORIES: biostudies-literature
Ermolova Natalia N Guan Lan L Kaback H Ronald HR
Proceedings of the National Academy of Sciences of the United States of America 20030821 18
Previous experiments using intermolecular thiol cross-linking to determine surface-exposed positions in the transmembrane helices of the lactose permease suggest that only positions accessible from the aqueous phase are susceptible to cross-linking. This approach is now extended to most of the remaining positions in the molecule. Of an additional 143 single-Cys mutants studied, homodimer formation is observed with both a 5-A- and a 21-A-long crosslinking agent containing bis-methane thiosulfonat ...[more]