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. 2017 Aug 7;8:550. doi: 10.3389/fphys.2017.00550

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Copyright © 2017 Qian, Ni, Niu, Bai, Bao, Li, Sun, Zhang and Teng.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Alignment of the SBP domains of PpSPL proteins. (A) Multiple SBP domain sequences from pear PpSPL proteins were aligned using DNAMAN software. Two conserved zinc finger structures (i.e., Zn-1 and Zn-2) and the nuclear localization signal are indicated. (B) Sequence logo of the SBP domain of PpSPL proteins. The overall height of each stack represents the degree of conservation at this position, while the height of the letters within each stack indicates the relative frequency of the corresponding amino acids.