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. 2017 Aug 28;8:1634. doi: 10.3389/fmicb.2017.01634

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Copyright © 2017 Gran-Scheuch, Fuentes, Bravo, Jiménez and Pérez-Donoso.

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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Genetics of Phenanthrene degradation in S. xenophagum D43FB. (A) Predicted pathways of aerobic Phenanthrene degradation are shown, and genes mapped to D43FB genome with required enzymatic activies are shown in blue numbers. Chemical structures: (1) phenanthrene, (2) cis-3,4-Dihydrophenanthrene-3,4-diol, (3) phenanthrene 3,4-diol, (4) 2-hydroxy-2H-benzo[h]chromene-2-carboxylate, (5) cis-4-(1′-hydroxynaphth-2′-yl)-2-oxobut-3-enoate, (6) 1-hydroxy-2-naphthaldehyde, (7) 1-hydroxy-2-naphthoate, (8A) cis-2′-carboxybenzalpyruvate, (9A) 2-formylbenzoate, (10A) phthalate, (11A) protocatechuate, (12A) 4-carboxy-2-hydroxymuconate semialdehyde, (13A) pyrone-4,6-dicarboxylate, (14A) oxalomesaconate, (15A) 4-carboxy-2-hydroxy-cis,cis,-muconate, (16A) 4-hydroxy-4-carboxymethyl-2-oxoglutarate, (8B) naphthalene-1,2-diol, (9B) 2-hydroxychromene-2-carboxylate, (10B) trans-o-hydroxybenzylidenepyruvate, (11B) salicylaldehyde, (12B) salicylate, (13B) catechol, (14B) hydroxymuconate semialdehyde, (15B) hydroxymuconate, (16B) 2-hydroxy-pentadienoate, (17B) oxalocrotonate, (18B) 4-hydroxy-2-oxovalerate, (19B) acetaldehyde, (13C) gentisate, (14C) maleylpyruvate, (15C) fumarylpyruvate, (16C) fumarate, (20) pyruvate. (B) Organization of predicted Phenanthrene degradation genes in S. xenophagum D43FB. Principal operons encoding enzymatic functions involved in PAH degradation are shown, with predicted function and gene numbers.