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. 2016 Mar 3;137(1):33–45. doi: 10.1111/jnc.13543

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© 2016 The Authors. Journal of Neurochemistry published by John Wiley & Sons Ltd on behalf of International Society for Neurochemistry

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Precursor of starfish myorelaxant peptide (SMP) in Patiria pectinifera. The DNA sequence of a transcript (lowercase, 1682 bases) encoding the P. pectinifera SMP precursor (uppercase, 426 amino acid residues) is shown. The predicted signal peptide, the purified mature SMP (SMP _a) and three other variants (SMP _b, [Met³]‐SMP _a; SMP _c, [Met³, Glu¹⁶]‐SMP _a; SMP _d, SMP _a‐related octadecapeptide) are shown in blue, red, pink, orange and purple, respectively, and putative dibasic cleavage sites (KR) are shown in green. The asterisk shows the position of the stop codon. The SMP precursor protein comprises twelve copies of SMP and seven copies of SMP‐like peptides.