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. 2016 Feb 15;129(4):831–842. doi: 10.1242/jcs.180182

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© 2016. Published by The Company of Biologists Ltd

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Fig. 1. — Peptides and proteins used in this study. The last 15 amino acids of human TASK-1 and TASK-3 C-termini contain a minimal trafficking control region comprising a COPI recognition motif (green), a PKA target site (red) and a mode III 14-3-3-binding motif (-K-R-R-K/S-pS-V-COOH, where ‘p’ denotes a phosphorylated residue). Note the presence of a serine residue (S392) preceding the conserved serine residue of the mode III 14-3-3-binding motif in TASK-1 (S393) but not TASK-3 (S373). Fluorescein-labeled peptides comprising the TASK C-termini were used for the determination of equilibrium binding constants by using fluorescence polarization.