Immunogen sequence: VKMTWLKEIR NILLKQQELL TVKKRKQQDQ LTERDKFQIS LQQNDEKQQG AFISTEETEL EHTSTVVEVC EAIASVQAEA NTVWTEASQS AEISEEPAEW SSNYFYPTYD ENEEENRPLM RPVSEMALLY; Positive Samples: HT-29; Cellular Location: Cytoplasm, Membrane. Guanine nucleotide exchan