The Mla phospholipid transporter is a multi-subunit ATP-binding cassette transport system widely understood to move phospholipids in a retrograde direction; that is, from the outer membrane to the inner membrane. However, recent studies reveal that Mla might move phospholipids in the opposite, anterograde direction.
Authors
Bishop RE
Journal
Nature Microbiology, Vol. 4, No. 10, pp. 1608–1609