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BIOPHYSICAL PROPERTIES OF RAT BRAIN CHOLINE ACETYLTRANSFERASE 1

Abstract— The molecular weight of choline acetyltransferase (ChAc) was determined by using a variety of methods. A molecular weight of 68,000 daltons was found. ChAc is a globular protein with an apparent radius of 3.39 nm (value of the Stokes radius). The existence of a dimeric form and higher aggregates is discussed