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. 2019 Sep 10;5:51. doi: 10.1038/s41421-019-0121-y

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Structural comparisons of N6amt1-Trm112 with Dam (left panel, PDB code 2G1P), RsrI (middle panel, PDB code 1EG2), and TaqI (right panel, PDB code 1G38). b Overall structures and Electrostatic potential surfaces of Dam, RsrI, and TaqI. The MTase and TRD domains of the bacterial DNA 6mA MTases are shown with ribbon models and colored in gray and yellow, respectively. The bound dsDNA is shown with orange ribbon. c Structure of the active site of TaqI (left panel) and comparison of the active site of N6amt1 with that of TaqI (right panel)