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Int J Dev Biol. 1996 Jun;40(3):545-55.

Structure and developmental expression of mouse Garp, a gene encoding a new leucine-rich repeat-containing protein.

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Laboratoire d'Oncologie Mol├ęculaire, U. 119 INSERM, Marseille, France.


Proteins with leucine-rich repeats (LRR) constitute a large family of molecules playing a role in protein-protein interactions and signal transduction. They are involved in various cellular processes in different species. We characterized the organization and pattern of expression of the mouse Garp gene. It is composed of two coding exons, expressed as a major 4.3 kb mRNA, and encodes a putative LRR transmembrane protein with an extracellular region almost entirely made of 20 repeats, and a short intracytoplasmic region. The mouse GARP deduced amino-acid sequence is highly similar to that of the human protein. The Garp gene is expressed in various areas in the mid-gestation developing embryo, including skin, lens fibre cells, nasal cavity, smooth and skeletal muscles, lung, and megakaryocytes of the fetal liver. In the adult it is expressed in the megakaryocytes of the spleen and in endothelial cells of the placenta. The data suggests that GARP might be involved in platelet-endothelium interactions.

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