The construct containing mouse potassium inwardly rectifying channel, subfamily J, member 11 (Kcnj11) driving Red Fluorescent Protein (RFP) and cre/ERT2 fusion gene was used to create transgenic line in C57BL/6 mouse. Cre protein is expressed in myocardium, skull, small intestine, ovary, and brown fat after tamoxifen induced. (J:202955)