Abstract: The present invention provides a method for testing an agent for its ability to inhibit binding between fibroblast growth factor (FGF) and heparan sulfate, comprising the steps of: interacting in solution immobilized FGF on a solid support with the agent and labeled heparan sulfate, and detecting the presence or absence of label in the solution remote from the solid support.

Abstract: The present invention provides a method for testing an agent for its potential to inhibit heparanase catalytic activity, comprising the steps of: interacting immobilized heparanase substrate binding protein on a solid support with labeled heparanase substrate to provide immobilized labeled heparanase substrate, interacting a heparanase enzyme solution with the immobilized labeled heparanase substrate in the presence of the agent, and detecting the presence or absence of label in the solution remote from the solid support. The labeled heparanase substrate may be bound to an immobilization bridge which binds to immobilized molecules on a solid support, to provide bridge-immobilized labeled heparanase substrate.

Abstract: The present invention provides a method for testing an agent for its potential to inhibit heparanase catalytic activity, comprising the steps of: interacting immobilized heparanase substrate binding protein on a solid support with labeled heparanase substrate to provide immobilized labeled heparanase substrate, interacting a heparanase enzyme solution with the immobilized labeled heparanase substrate in the presence of the agent, and detecting the presence or absence of label in the solution remote from the solid support. The labeled heparanase substrate may be bound to an immobilization bridge which binds to immobilized molecules on a solid support, to provide bridge-immobilized labeled heparanase substrate.

Abstract: The present invention provides a method for testing an agent for its potential to inhibit heparanase catalytic activity, comprising the steps of: interacting immobilized heparanase substrate binding protein on a solid support with labeled heparanase substrate to provide immobilized labeled heparanase substrate, interacting a heparanase enzyme solution with the immobilized labeled heparanase substrate in the presence of the agent, and detecting the presence or absence of label in the solution remote from the solid support. The labeled heparanase substrate may be bound to an immobilization bridge which binds to immobilized molecules on a solid support, to provide bridge-immobilized labeled heparanase substrate.

Abstract: The sub-assembly includes a telescopically arranged rotatable driving shaft and rotatable driven shaft. Both shafts are substantially triangular in cross-section. A spring provides a pre-determined spring force having a magnitude to permit one shaft to slide within the other shaft. The complementary triangular shapes of the shafts causes the torque from the driving shaft to be transmitted to the driven shaft without rotational lash.