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. 2016 Nov 16;1(5):923–929. doi: 10.1021/acsomega.6b00247

Scheme 1. Illustration of the Drug Efflux Mediated by ATP-Driven Pgp Transport.

Scheme 1

(i) Drug binds to the substrate binding site (■),5 (ii) ATP binds to the ATP-binding site (▲), and (iii) hydrolysis of ATP to ADP + Pi (★). Although only one binding site is shown for simplicity, multiple binding sites could contribute to substrate promiscuity.