each type of proteoglycan is preferentially associated with one connective tissue component : ( a ) a dermatan sulfate proteoglycan interacts with collagenous fibers , ( b ) a heparan sulfate proteoglycan is associated with elastic fibers and with the exterior surface of the basement membrane-like layer surrounding smooth muscle cells , and ( c ) a chondroitin sulfate proteoglycan forms aggregates with hyaluronate in the soluble matrix .
C0033692
proteoglycan
C0062503
heparan sulfate