Identification of a competitive HGF antagonist encoded by an alternative transcript - PubMed (original) (raw)

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

doi: 10.1126/science.1720571.

Affiliations

• PMID: 1720571
• DOI: 10.1126/science.1720571

Identification of a competitive HGF antagonist encoded by an alternative transcript

A M Chan et al. Science. 1991.

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.

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