the evidence for an interaction between the heparan sulfate side chains of the proteoglycans and the immobilized heparan sulfate are as follows : ( a ) the individual side chains released from the proteoglycan by papain bind to the affinity matrix , ( b ) the bound proteoglycans are desorbed by a solution of cognate heparan sulfate chains , and ( c ) the core protein obtained by heparan sulfate-lyase digestion of the proteoglycan does not bind to the affinity matrix .
C0033692
proteoglycans
C0062503
heparan