Immunogen sequence: LVKTLEKEEE KDLVMYSKCQ RLFRSPSMPC SVIRPILKRL ERPQDRDTPV QNKRRRSVTP PEEQQEAEEP KARVLRSKSL CHDEI. Tyrosine protein phosphatase which functions as a dosage-dependent inducer of mitotic progression. Required for G2/M phases of the cell cyc