Abstract:
:The potential of the folic acid biosynthesis pathway as a target for the development of antibiotics has been clinically validated. However, many pathogens have developed resistance to these antibiotics, prompting a re-evaluation of potential drug targets within the pathway. The ydaH gene of Alcanivorax borkumensis encodes an integral membrane protein of the AbgT family of transporters for which no structural information was available. Here we report the crystal structure of A. borkumensis YdaH, revealing a dimeric molecule with an architecture distinct from other families of transporters. YdaH is a bowl-shaped dimer with a solvent-filled basin extending from the cytoplasm to halfway across the membrane bilayer. Each subunit of the transporter contains nine transmembrane helices and two hairpins that suggest a plausible pathway for substrate transport. Further analyses also suggest that YdaH could act as an antibiotic efflux pump and mediate bacterial resistance to sulfonamide antimetabolite drugs.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Bolla JR,Su CC,Delmar JA,Radhakrishnan A,Kumar N,Chou TH,Long F,Rajashankar KR,Yu EWdoi
10.1038/ncomms7874subject
Has Abstractpub_date
2015-04-20 00:00:00pages
6874issn
2041-1723pii
ncomms7874journal_volume
6pub_type
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