Table 1.

Properties of CYP3A4 ligands analyzed by HDX-MS.

Ligand	Type	Affinity (μM)	X-ray structure?	Binding to CYP3A4
RIT	II	0.85	Yes	Complex: binding is stoichiometric, irreversible and biphasic. [37], [38]
NIF	I	20*	No	Complex: multiple binder, substrate inhibition kinetics [39]
BEC	I	0.45	Yes	Single binder [40], [41]
MIC	II	0.45 *†	No	Single binder? [41]
AZA	I	1.7*	Yes	Single binder [42]
TST	I	120†	No	Complex: multiple binder, allosteric [28]

Kd, Ks*, † CYP3A4 in ND.