In a system of purified components , the rate of binding of a protein chimera composed of a protein fragment containing a immunoglobulin like protein domain 3 4 from __SP__ __NODE__ protein and of a protein fragment containing a protein repeat 1 15 from __SP__ __NODE__ protein and __SP__ __NODE__ protein is greater than the rate of binding of a protein chimera composed of a protein fragment containing a immunoglobulin like protein domain 3 4 from __SP__ __NODE__ protein and of a protein fragment containing a protein repeat 1 15 from __SP__ __NODE__ protein and __NODE__ protein .