7.5.2.5 | ATP + H2O + lipopolysaccharide[side 1] = ADP + phosphate + lipopolysaccharide[side 2] |
LptB2FG tetramer mechanism: 1. Resting: the LptB nucleotide-binding sites are unoccupied, and the LptF/G cavity is oriented inwards. 2. Open: ATP binds LptB, inducing the LptF/G cavity to open away from the IM, and receives the Lipid A moiety of LPS, which is still embedded in the IM. 3. Close: LptB hydrolyzes ATP, inducing the LptF/G cavity to close again. LPS is forced out of the IM into the periplasm |
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