Klotho, βklotho, and KLPH.
a, schematic depicting klotho, βklotho and KLPH with putative acid/bases (gray) and nucleophiles (black) in predicted pockets. b, overexpressed myc/His-tagged klotho, βklotho, KLPH, GBA wild-type, and acid/base-lacking E235G GBA in total COS-7 cells with excess ABP 1 or ABP 2 and purified via His-tag pulldown. Labeling with ABP 1 in the absence/presence of sodium azide (first and second gel), idem with ABP 2 (third and fourth gel), and myc-tagged proteins detected with α-myc (fifth gel).