Hmmm ... tricky. OK, so you're building lipid micelles, presumably by sonicating them. And you want externally bound lipophillic proteins -- not transmembrane proteins. Is there any reason why simple mixing doesn't work? (As in, did you try it and have it not work?) Are you sure your protein immuno-complex is lipophillic enough? Why, exactly, do you need micelles with immuno-complexs on them, anyway? I mean, I'm sure you have a reason, I'm just curious as to what the application is. Did you read of this procedure in a peer-reviewed journal? But then, that's where the protocol ought to be.