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  • Title: A common PDGF receptor is activated by homodimeric A and B forms of PDGF.
    Author: Escobedo JA, Navankasatussas S, Cousens LS, Coughlin SR, Bell GI, Williams LT.
    Journal: Science; 1988 Jun 10; 240(4858):1532-4. PubMed ID: 2836953.
    Abstract:
    The human platelet-derived growth factor (PDGF) receptor complementary DNA was cloned and expressed by transfection of Chinese hamster ovary (CHO) fibroblasts. The ability of CHO cells expressing the human receptor complementary DNA (CHO-HR5) to interact with different recombinant forms of PDGF (AA and BB homodimers) was tested. Both forms of PDGF bind to the transfected receptor, stimulate the receptor tyrosine kinase activity, and elicit a mitogenic response in a manner that was indistinguishable from the responses of Balb/c 3T3 cells to AA and BB forms of PDGF can be attributed to a single type of receptor and show that the AA form, like the BB form, is a true mitogen.
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