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FIGURE 7 Sequence alignments of residues 320?400 in several AChEs and in HuBChE. The numbering used is that of TcAChE. Fully conserved residues are in white on a red background. The columns for the four residues corresponding to the 4D motif in TcAChE and zebrafish AChE are framed in green, and it can be seen that the motif is conserved only in these three AChEs. TcAChE, Torpedo californica AChE; TmAChE, Torpedo marmorata AChE; EeAChE, Electrophorus electricus AChE; DrAChE, Danio rerio AChE; BfAChE, Bungarus fasciatus AChE; HuAChE, human AChE; BoAChE, bovine AChE; MoAChE, mouse AChE; HdAChE, designed HuAChE, D4 variant38; HuBChE, human BChE; AgAChE, Anopheles gambiae AChE; DmAChE, Drosophila melanogaster AChE