5JVB:
reference: The molecular basis of phosphite and hypophosphite recognition by ABC-transporters., Bisson C, Adams NBP, Stevenson B, Brindley AA, Polyviou D, Bibby TS, Baker PJ, Hunter CN, Hitchcock A, Nat Commun. 2017 Nov 23;8(1):1746. doi: 10.1038/s41467-017-01226-8. PMID: 29170493

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