Immunogen sequence: MSAIQNLHSF DPFADASKGD DLLPAGTEDY IHIRIQQRNG RKTLTTVQGI ADDYDKKKLV KAFKKKFACN GTVIEHPEYG EVIQLQGDQR KNICQFLVEI GLAKDDQLKV HGF; Positive Samples: A-549, Mouse liver. Necessary for scanning and involved in initiation site selection. Prom