<prompt> Apolipoprotein activating LCAT:B-48Apo A-IApo A -IIB-100  <response>: LCATLecithin cholesterol acyltransferase is a plasma enzyme.This is similar to the lipoproteins and can be activated by Apo -I. Also Know: LCAT activity is associated with HDL containing apo A-I. As cholesterol in HDL becomes esterified, it creates a concentration gradient and draws in cholesterol from tissues and from other lipoproteins, thus enabling HDL to function in reverse cholesterol transpo Ref: Botham K.M., Mayes P.A. 2011. Chapter 26. Cholesterol Synthesis, Transpo, Excretion. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell Eds, Harpers Illustrated Biochemistry, 29e. 