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. 2015 Jun 12;15:110. doi: 10.1186/s12862-015-0412-3

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© Bay et al. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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. 2 — A summary of NarJ subfamily member operon associations and genetic arrangements. A diagrammatic summary of genes frequently co-occurring within a 10 ORF radius of NarJ subfamily member (narJ, dmsD, ycdY and torD) loci and operons are shown as labelled arrows. All identified ORFs/genes (labelled according to three letter gene abbreviations) are provided in their order of occurrence from each indicated locus (left-hand side). Solid lined unfilled arrows indicate ORF present at ≥80 % co-frequency occurrence and dashed lined unfilled arrows indicate ORF at ≤ 60 % co-frequency of occurrence to NarJ subfamily member loci (black filled arrows). ORF abbreviations listed in each arrow are as follows: biotin sulfoxide reductase molybdoenzyme family (bisC), DMSO reductase alpha molybdoenzyme containing subunit (dmsA/ dmsA1), DMSO reductase beta iron-sulfur subunit (dmsB), DMSO reductase membrane anchor subunit (dmsC), 200 amino acid protein of unknown function (DUF3306), 170–190 amino acid protein of unknown function (DUF3305), TAT pathway signal sequence domain-containing protein (fdh _tat), Fdh-N alpha molybdoenzyme subunit G (fdhG), fdh-N beta iron-sulfur subunits H1/H2 (fdhH1/fdhH2), Fdh-N gamma membrane anchor subunit I (fdhI), 4Fe-4S binding domain containing protein (fer4), FtsH protease membrane subunit (hflC), 4Fe-4S-cluster-containing hydrogenase component/ 4Fe-4S ferredoxin (hybA), NADPH-quinone reductase/ dehydrogenase (mdaB), nitrate reductase alpha molybdoenzyme subunit (narG), nitrate reductase beta iron-sulfur subunit (narH), nitrate reductase gamma membrane anchor subunit (narI), nitrate/ nitrite major facilitator transporter (narK), nitrate/ nitrite major facilliator transporter (narU), polysulfide reductase/ formate-dependent nitrite reductase membrane component (nrfD), major facilitator multidrug resistance transporter (mdtH), parvulin-like peptidyl-prolyl isomerase (ppiC), TMAO reductase I catalytic subunit (torA), TMAO reductase c-type cytochrome (torC), two-component regulatory system sensory histidine kinase (narX), response regulator of two-component regulatory system (narL), membrane-anchored diguanylate cyclase (ycdT), Zinc- binding alkaline phosphatase/ hydrolase (ycdX), 5 transmembrane inner membrane protein of unknown function DUF1097 (ycdZ), unknown lipoprotein DUF1439/ PRK10598 (yceB)