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Proc Natl Acad Sci U S A. 1993 Jun 15;90(12):5677-81.

A receptor tyrosine kinase found in breast carcinoma cells has an extracellular discoidin I-like domain.

Author information

  • 1Hormone Research Institute, University of California, San Francisco 94143-0534.

Abstract

We have identified a breast carcinoma tyrosine phosphoprotein, discoidin domain receptor (DDR), that defines an unusual class of receptor tyrosine kinases. The DDR cDNA predicts a C-terminal tyrosine kinase domain and an N-terminal domain similar to the Dictyostelium discoideum lectin discoidin I. These domains are connected by an extraordinary hydrophilic proline/glycine-rich domain, which is interrupted by a predicted transmembrane sequence. This extended proline/glycine-rich region may be required for an unusual geometry of interaction with ligand or substrates. Discoidin I domains are also found in other proteins, including coagulation factors V and VIII, and may represent a class of domains that interact with specific cell surface molecules.

PMID:
8390675
[PubMed - indexed for MEDLINE]
PMCID:
PMC46784
Free PMC Article
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