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. 2014 Apr 24;14:14. doi: 10.1186/1472-6807-14-14

Figure 1.

Figure 1

Spn42Da encodes eight protein isoforms. Two invariable core exons are followed by four alternatively spliced exons (I-IV) encoding different reactive centre loops (RCLs). For each of these, there is an alternative N-terminal exon encoding a secretion signal peptide (SP). Isoform names are according to FlyBase annotation (release 5.55) [6].