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. 2020 Nov 13;11:5790. doi: 10.1038/s41467-020-19583-2

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© The Author(s) 2020

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. 6 — Proposed mechanisms for the synergistic biodegradation of a PBAT-based blend film (PF) during different time points (t1–t3) and within a biofilm (F). Periplasmatic α/β hydrolases (Ple628, Ple453), synthesized by Marinobacter, hydrolyze PF to produce oligomers and monoesters of 1,4-butanediol (B) with either terephthalic acid (Te) or sebacic acid (Se)/adipic acid (Ad). An Alphaproteobacterial Mle (Mle046) hydrolyzes a mixture of terephthalate-butanediol monoester (BTe) to produce Te and B. Te is transported into the cell and catabolized by terephthalate degradation clusters of an unknown bacterium (pTPD), and to a lesser extent by Saccharospirillum (sTPD). Downstream degrading genes leads to the formation of protocatechuate (PCA). Red arrows indicate gene translation into a functional protein; blue arrows indicate the catalysis of a substrate by a protein; green arrows, show the formation of intermediates by the catalysis of a substrate; orange arrows represents the transport of intermediates from the surroundings to bacteria; pink arrows represent donwstream degradation pathways. The color scale represent upregulated (+) and downregulated (−) transcripts (T) and proteins (P) (created with Biorender.com).