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Science. 1991 Nov 29;254(5036):1382-5.

Identification of a competitive HGF antagonist encoded by an alternative transcript.

Author information

  • 1Laboratory of Cellular and Molecular Biology, National Cancer Institute, Bethesda, MD 20892.

Abstract

We identified a naturally occurring hepatocyte growth factor (HGF) variant, whose predicted sequence extends only through the second kringle domain of this plasminogen-related molecule. This smaller molecule, derived from an alternative HGF transcript, lacked mitogenic activity but specifically inhibited HGF-induced mitogenesis. Cross-linking studies demonstrated that the truncated molecule competes with HGF for binding to the HGF receptor, which has been identified as the c-met protooncogene product. Thus, the same gene encodes both a growth factor and its direct antagonist.

PMID:
1720571
[PubMed - indexed for MEDLINE]
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