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. 2017 Apr 19;10:191. doi: 10.1186/s13071-017-2137-1

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Alignment of H. contortus API with aspins from other nematodes. The amino acid sequence of H. contortus API is compared with those from C. elegans (AAC46663), T. colubriformis (AY189824) and O. ostertagi (CAD10783). The conserved cysteine residues and cleavage sites are marked by ■ and ★. “RDL” motif is indicated by ▲. Putative signal sequence is overlined