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. 2019 Apr 29;20:326. doi: 10.1186/s12864-019-5696-z

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© The Author(s). 2019

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 — Phylogenetic identification and domain structures of the 67 PUB genes in barley. a. Full-length amino-acid sequences of PUB genes in Arabidopsis, rice and barely were analyzed using the Clustal X2 software. The tree was constructed by neighbor-joining method after bootstrap analysis for 1000 replicates [11]. b. Domain structures of the 67 PUB genes into 8 different classes. Green box, U-box domain; brown box, UFD2 UB chain assembly domain; sky blue box, ARM repeat domain; yellow box, kinase domain; cyan box, WD40 protein interaction domain; violet box, TPR; light green box, DJ-1 domain. C. Domain organization of PUB genes in Arabidopsis, rice and barley