Abstract:To get insight into the insertion mechanism of small newly synthesized single-spanning membrane proteins, Pf3 coat protein mutants were constructed with potential glycosylation sites in the N-terminus. Some of these proteins, when synthesized in vitro in the presence of microsomes, became efficiently glycosylated, proving that they insert into the membrane and translocate their N-terminus to the lumenal side. Such Pf3 constructs also insert efficiently into Escherichia coli vesicles and even in pure lipid vesi… Show more
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