| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide materials involved in the control of the circulatory system, more specifically, to provide a recombinant material useful for the production of a thrombin receptor, to provide use of the receptor as a diagnostic tool, and to provide a therapeutic agent which either stimulates or blocks thrombin receptor activation and diagnostic compositions relevant to the receptor. <P>SOLUTION: The materials include a mutant thrombin, a DNA molecule, and a recombinant host cell; wherein the mutant thrombin, producible in a recombinant way, is such that the 57- and/or 99- and/or 205-position(s) is (are) different from that(those) in a wild-type thrombin b-chain, the DNA molecule has an expression system capable of producing the thrombin in a host when transformed to the recombinant host and includes a DNA sequence encoding the thrombin linked agonistically to an abnormal regulatory sequence so that the expression system is operable in the host, and the recombinant host cell is subject to transformation by the expression system. <P>COPYRIGHT: (C)2003,JPO |
