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Ann N Y Acad Sci. 2005 May;1041:22-6.

LGR7-truncate is a splice variant of the relaxin receptor LGR7 and is a relaxin antagonist in vitro.

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Howard Florey Institute, University of Melbourne, Victoria 3010, Australia.


The relaxin receptor (LGR7) and the insulin-like peptide 3 (INSL3) receptor (LGR8) are unique LGR family members in possessing a single, functionally important amino terminal LDL-A module.1 Mouse and rat cDNA was screened for LGR7 and LGR7 splice variant expression. A uterus-specific exon 4 deleted variant was identified and named LGR7-Truncate. Deletion of exon 4 results in a premature stop codon and a transcript that putatively encodes a secreted protein containing LGR7's LDL-A module. Expression of LGR7-Truncate with LGR7 in HEK-293T cells resulted in decreased relaxin-induced signaling of LGR7. LGR7-Truncate is potentially an endogenous regulator of LGR7 signaling.

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