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. 2015 Jul 28;7(1):28–45. doi: 10.1007/s13238-015-0193-x

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© The Author(s) 2015

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.

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Location of intramolecular disulfide linkages in HEF. The middle part shows the secondary structure of a HEF monomer. HEF1 and HEF2 subunits are drawn in red and green, respectively. The left part shows the head domain which contains six disulfide linkages and also two free cysteines. The right part shows the location of the only disulfide linkage between HEF1 and HEF2. The figure was created with PyMol from PDB file 1FLC. HEF1 and HEF2 subunits are drawn in red and green, respectively