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. 2014 Oct 24;5:178. doi: 10.3389/fendo.2014.00178

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Copyright © 2014 Zatylny-Gaudin and Favrel.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Comparison of the linear schematic organization of Luqin precursors in mollusks: Ac-Luqin identified in Aplysia californica (101), Ls-Luqin (LyCEP: Lymnaea CardioExcitatory Peptide) in Lymnaea stagnalis (104), Af-Luqin (ACEP: Achatina CardioExcitatory Peptide) in Achatina fulica (108), Lg-Luqin in Lottia gigantea, Ip-Luqin in Idiosepius paradoxus, and Cg-Luqin in Crassostrea gigas (27). (B) Comparison of the linear schematic organization of NPF precursors in gastropods: Ac-NPF in A. californica (109), Ls-NPF in L. stagnalis (93), and Lg-NPF in Lottia gigantea (27). Signal peptides, proteolytic processing sites, and C-terminal glycines for amidation are indicated by distinct labels. CPON, carboxy-terminal peptide of NPF; PRMP, proline-rich mature peptide. For Ac-Luqin precursors, the respective encoding exons are indicated as E1, E2, E3, E4, and E5.