a glycoprotein with a molecular weight of 32,000 as estimated by sds-polyacrylamide gel electrophoresis , and characterized by an abundance of asp and glu residues and an absence of cys residues in its amino acid analysis , was isolated from fresh root tubers of momordica cochinchinensis using a procedure that involved acetone precipitation , ammonium sulfate precipitation , ion exchange chromatography on deae sepharose cl-6b and gel filtration on sephadex g-75 .
C0061472
glu
C0002520
amino acid