text: classification of proteins on basis 0f solubility and physical properties? proteins classification of protein on the basis of solubility- proteins may be classified as simple protein and conjugated proteins. simple protein consist of only amino acid or their derivities. under simple protein includes-albumins,globulins,glutelns,prolamines,albuminoids,histones,protamines. conjugated proteins consist of simple proteins in combination with some non-proteinic components.these include- nucleoprotein,glycoprotein,phosphoprotein,chromoprotein,lipoprotein,mettaloprotein.