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J Biol Chem. 2004 Mar 12;279(11):10382-8. Epub 2003 Dec 18.

The crystal structure of placental growth factor in complex with domain 2 of vascular endothelial growth factor receptor-1.

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  • 1Department of Protein Engineering Genentech, Inc., South San Francisco, California 94080, USA.

Abstract

Placental growth factor (PlGF) is a member of the vascular endothelial growth factor (VEGF) family and plays an important role in pathological angiogenic events. PlGF exerts its biological activities through binding to VEGFR1, a receptor tyrosine kinase that consists of seven immunoglobulin-like domains in its extracellular portion. Here we report the crystal structure of PlGF bound to the second immunoglobulin-like domain of VEGFR1 at 2.5 A resolution and compare the complex to the closely related structure of VEGF bound to the same receptor domain. The two growth factors, PlGF and VEGF, share a sequence identity of approximately 50%. Despite this moderate sequence conservation, they bind to the same binding interface of VEGFR1 in a very similar fashion, suggesting that both growth factors could induce very similar if not identical signaling events.

PMID:
14684734
[PubMed - indexed for MEDLINE]
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