[molecular_function] amyloid-beta binding <sep> apolipoprotein A-I receptor binding <sep> chemorepellent activity <sep> cholesterol binding <sep> cholesterol transfer activity <sep> enzyme binding <sep> heat shock protein binding <sep> high-density lipoprotein particle binding <sep> high-density lipoprotein particle receptor binding <sep> phosphatidylcholine-sterol O-acyltransferase activator activity <sep> phospholipid binding <sep> protein homodimerization activity