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      Complete Genome Sequence of Sulfuriferula sp. Strain AH1, a Sulfur-Oxidizing Autotroph Isolated from Weathered Mine Tailings from the Duluth Complex in Minnesota

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          ABSTRACT

          We report the closed and annotated genome sequence of Sulfuriferula sp. strain AH1. Strain AH1 has a 2,877,007-bp chromosome that includes a partial Sox system for inorganic sulfur oxidation and a complete nitrogen fixation pathway. It also has a single 39,138-bp plasmid with genes for arsenic and mercury resistance.

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          The microbiology of biomining: development and optimization of mineral-oxidizing microbial consortia.

          M. Johnson, Douglas Rawlings (2007)
          Biomining, the use of micro-organisms to recover precious and base metals from mineral ores and concentrates, has developed into a successful and expanding area of biotechnology. While careful considerations are made in the design and engineering of biomining operations, microbiological aspects have been subjected to far less scrutiny and control. Biomining processes employ microbial consortia that are dominated by acidophilic, autotrophic iron- or sulfur-oxidizing prokaryotes. Mineral biooxidation takes place in highly aerated, continuous-flow, stirred-tank reactors or in irrigated dump or heap reactors, both of which provide an open, non-sterile environment. Continuous-flow, stirred tanks are characterized by homogeneous and constant growth conditions where the selection is for rapid growth, and consequently tank consortia tend to be dominated by two or three species of micro-organisms. In contrast, heap reactors provide highly heterogeneous growth environments that change with the age of the heap, and these tend to be colonized by a much greater variety of micro-organisms. Heap micro-organisms grow as biofilms that are not subject to washout and the major challenge is to provide sufficient biodiversity for optimum performance throughout the life of a heap. This review discusses theoretical and pragmatic aspects of assembling microbial consortia to process different mineral ores and concentrates, and the challenges for using constructed consortia in non-sterile industrial-scale operations.
          Article 0 comments Cited 86 times – based on 0 reviews     Review now
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            Hydrogeochemistry and microbiology of mine drainage: An update

            Carol J. Ptacek, D Kirk Nordstrom, David W Blowes (2015)
            Article 0 comments Cited 56 times – based on 0 reviews     Review now
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              A new structure-based classification of sulfide:quinone oxidoreductases.

              Ulrich Ermler, Hartmut Michel, G Peng … (2010)
              Sulfide:quinone oxidoreductases (SQR) are ubiquitous membrane-bound flavoproteins involved in sulfide detoxification, in sulfide-dependent energy conservation processes and potenatially in the homeostasis of the neurotransmitter sulfide. The first 2 structures of SQRs from the bacterium Aquifex aeolicus (Marcia et al., Proc Natl Acad Sci USA 2009; 106:9625-9630) and the archaeon Acidianus ambivalens (Brito et al., Biochemistry 2009; 48:5613-5622) were determined recently by X-ray crystallography revealing unexpected differences in the active sites and in flavin adenine dinucleotide binding. Besides the reciprocal differences, they show a different conformation of the active site compared with another sulfide oxidizing enzyme, the flavocytochrome c:sulfide dehydrogenase (FCSD) from Allochromatium vinosum (protein data bank id: 1FCD). In addition to the new structural data, the number of available SQR-like protein sequences is continuously increasing (Pham et al., Microbiology 2008; 154:3112-3121) and the SQR activity of new members of this protein family was recently proven too (Chan et al., J Bacteriol 2009; 191:1026-1034). In the light of the new data, here we revisit the previously proposed contradictory SQR classification and we define new structure-based sequence fingerprints that support a subdivision of the SQR family into six groups. Our report summarizes the state-of-art knowledge about SQRs and highlights the questions that still remain unanswered. Despite two decades of work already done on these enzymes, new and most exciting discoveries can be expected in the future.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Genome Announc
                Journal ID (iso-abbrev): Genome Announc
                Journal ID (hwp): ga
                Journal ID (pmc): ga
                Journal ID (publisher-id): GA
                Title: Genome Announcements
                Publisher: American Society for Microbiology (1752 N St., N.W., Washington, DC )
                ISSN (Electronic): 2169-8287
                Publication date (Electronic): 10 August 2017
                Publication date Collection: August 2017
                Volume: 5
                Issue: 32
                Electronic Location Identifier: e00673-17
                Affiliations
                [a ]University of Minnesota, BioTechnology Institute, St. Paul, Minnesota, USA
                [b ]Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota, USA
                Author notes
                Address correspondence to Daniel S. Jones, dsjones@ 123456umn.edu .
                [*]

                Present address: An An Hua, Schulze Diabetes Institute, Department of Surgery, University of Minnesota School of Medicine, Minneapolis, Minnesota, USA.

                Author information
                http://orcid.org/0000-0003-4556-0418
                Article
                Publisher ID: genomeA00673-17
                DOI: 10.1128/genomeA.00673-17
                PMC ID: 5552976
                PubMed ID: 28798167
                SO-VID: c7365691-bc9e-4889-aeb7-857f4e0fba4d
                Copyright © Copyright © 2017 Jones et al.
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

                History
                Date received : 1 June 2017
                Date accepted : 5 June 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 18, Pages: 3, Words: 1479
                Categories
                Subject: Prokaryotes
                Custom metadata
                cover-date August 2017

                ScienceOpen disciplines: Genetics
                Data availability:
                ScienceOpen disciplines: Genetics

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