Abstract
To support the study of kinin pharmacology in bovine models of cultured endothelial cells (ECs), the Bovine Genome Project was searched for a B1 receptor (B1R) gene ortholog (BDKRB1). A contig complementary to an intronless coding nucleotide sequence was found. The sequence was amplified from bovine EC DNA, further cloned into pcDNA3 and expressed in COS-1 cells. The bovine B1R sequence was confirmed and extended. A putative Zn2+-binding motif HEXXH is not present (replaced by HDAWP). The receptor binds [3H]Lys-des-Arg9-bradykinin in a saturable manner (K d 0.36 nM) and exhibits a pharmacological profile similar to that of human B1R.



















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