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. 2016 Dec 7;15:209. doi: 10.1186/s12934-016-0601-9

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© The Author(s) 2016

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 — Schematic diagram for IFN-α/Fc fusion proteins. The dimer is composed of two molecules of IFN-α joined to dimeric Fc, and the monomer has a single molecule of IFN-α linked to monomeric Fc. Black circles N-glycosylation site in the wild-type IgG1 Fc region; DB disulfide bridges between dimeric Fc; F-hinge full hinge region of IgG1; P-hinge partial hinge with the amino acid sequence of HTCPPCP