FES proto-oncogene, tyrosine kinase MGFSSELCSP QGHGVLQQMQ EAELRLLEGM RKWMAQRVKS DREYAGLLHH MSLQDSGGQS RAISPDSPIS QVGLYGTLVG AGCICLLLPL LGALWGSGWR SGRPMLGSHC APLPASPICA V