passages.id: split_8_test_2581_passage
passages.type: progene_text
passages.text: In order to discover the elements in the promoter region of the Ca(v)1.2 gene encoding the vascular / cardiac calcium channel alpha(1C) subunit that are important for the basal gene expression , approximately 2 kb of the 5' - flanking sequence of the Ca(v)1.2 gene has been cloned in our lab .