Flexibility in the ABC transporter MsbA: Alternating access with a twist.
Ward, A., Reyes, C.L., Yu, J., Roth, C.B., Chang, G.(2007) Proc Natl Acad Sci U S A 104: 19005-19010
- PubMed: 18024585 
- DOI: 10.1073/pnas.0709388104
- Primary Citation of Related Structures:  
3B5W, 3B5X, 3B5Y, 3B5Z, 3B60 - PubMed Abstract: 
ATP-binding cassette (ABC) transporters are integral membrane proteins that translocate a wide variety of substrates across cellular membranes and are conserved from bacteria to humans. Here we compare four x-ray structures of the bacterial ABC lipid flippase, MsbA, trapped in different conformations, two nucleotide-bound structures and two in the absence of nucleotide ...