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Sequence alignment of the second catalytic domains (D2) of rat (r) and mouse (m) PTPδ, rat PTPς, and rat LAR. The signature motif is in bold letters. The arrowhead represents the starting amino acid of the smallest clone isolated, located within the conserved DYINAS sequence. The previously published frameshift in the mouse PTPδ-D2 sequence (23) has been corrected based on our own sequencing.
