The leucine zipper motif functions to A. mediate the physical association of two polypeptides. B. anchor transcriptional activat
or proteins to enhancer sequences. C. release leucines from misfolded transcription factors. D. integrate leucines and isoleucines into newly translated transcriptional activators.
Option A (mediate...........polypeptides) would be the appropriate choice.
Explanation:
That's only because the leucine zipper symbol consisting of such a leucine remnant anywhere certain 7th point and has an α helical attachment.
Maybe the leucine including its zipper between one protein dimples again from α-helix as well as interdigit this same leucine including its iterator of some other antibody.
Some other possibilities in question are not connected to something like the situation in question So that is the correct approach.