Immunogen sequence: DYAAMGACPA SEQGYEEMRA FQGPGHQAPH VHYARLKTLR SLEATDSAFD NPDYWHSRLF PKANAQRT Positive Samples: Mouse skeletal muscle, Mouse lung, Rat skeletal muscle; Cellular Location: Cell membrane, Single-pass type I membrane protein. ErbB3 (c-erbB-