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Prokaryotes

Draft Genome Sequence of Pseudoalteromonas sp. Strain A2, an Isolate with High Antioxidative Activity from Arctic Seawater

Xuezheng Lin, Zhen Wang, Yang Li
Xuezheng Lin
Key Laboratory of Marine Bioactive Substances, First Institute of Oceanography, State Oceanic Administration, Qingdao, China
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Zhen Wang
Key Laboratory of Marine Bioactive Substances, First Institute of Oceanography, State Oceanic Administration, Qingdao, China
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Yang Li
Key Laboratory of Marine Bioactive Substances, First Institute of Oceanography, State Oceanic Administration, Qingdao, China
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DOI: 10.1128/genomeA.00885-14
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ABSTRACT

Here we report the draft genome sequence of Pseudoalteromonas strain A2, isolated from Arctic seawater in the pack-ice zone, which has high antioxidative activity against H2O2. The genomics information of this strain will facilitate the study of antioxidative mechanisms, cold adaptation properties, and evolution of this genus.

GENOME ANNOUNCEMENT

The genus Pseudoalteromonas is one of the largest genera within the class Gammaproteobacteria and currently comprises more than 30 species. It was described to accommodate nonpigmented, Gram-negative, heterotrophic, aerobic, polar-flagellated species of marine bacteria that have DNA G+C contents ranging from 38 to 50 mol% (1). In recent years, novel species belonging to Pseudoalteromonas have been isolated from a wide range of habitats, including seawater (2, 3), marine sediment (4), tidal flat (5), and sponge (6). Pseudoalteromonas sp. strain A2 was isolated from Arctic seawater in the pack-ice zone (120°21.017′ E, 86°48.196′ N), collected during the 5th Chinese National Arctic Expedition, and it has high antioxidative activity against H2O2.

The genome of Pseudoalteromonas sp. strain A2 was sequenced with Illumina HiSeq 2000 platforms by Shanghai Majorbio Bio-pharm Technology Co., Ltd. (Shanghai, China). A paired-end library with a fragment length of 300–500 bp and a mate-pair library with a fragment length of approximately 3 kb were constructed, generating a total of 3,563,169 and 2,851,727 high-quality paired reads and representing 159-fold and 127-fold coverage, respectively. SOAPdenovo version 1.05 (http://soap.genomics.org.cn) was used to assemble the genome with multiple k-mer parameters. GapCloser software (from the SOAPdenovo website) was subsequently applied to fill the remaining local inner gaps and correct the single-base polymorphism for the final assembly result. Glimmer version 3.0 (7), tRNAscan-SE (8), and RNAmmer (9) were used to predict protein-encoding genes (CDSs), tRNAs, and rRNAs, respectively. Then all gene models were blasted against the NCBI nonredundant (NR), Swiss-Prot (http://uniprot.org), KEGG (http://www.genome.jp/kegg), and Clusters of Orthologous Groups (COG; http://www.ncbi.nlm.nih.gov/COG) databases for functional annotation.

The draft genome of Pseudoalteromonas sp. strain A2 comprises 4,170,731 bp, with an average G+C content of 40.13%, consisting of 59 contigs (contig N50, 214,730 bp). The genome sequence contains 3,703 candidate CDSs, and the average gene length is 984 bp. In addition, 161 tRNA genes for 20 amino acids and a 16S rRNA operon were identified in the genome. The genome sequence enables the further study of the antioxidative mechanisms, cold adaptation properties, and evolution of this genus.

Nucleotide sequence accession numbers.This whole-genome shotgun project has been deposited at DDBJ/EMBL/GenBank under the accession number JPMC00000000. The version described in this paper is version JPMC01000000.

ACKNOWLEDGMENTS

This work was financially supported by the Chinese Polar Environment Comprehensive Investigation and Assessment Program (CHINARE2012-03-05, CHINARE2013-03-05).

FOOTNOTES

    • Received 7 August 2014.
    • Accepted 11 August 2014.
    • Published 11 September 2014.
  • Copyright © 2014 Lin et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 Unported license.

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Draft Genome Sequence of Pseudoalteromonas sp. Strain A2, an Isolate with High Antioxidative Activity from Arctic Seawater
Xuezheng Lin, Zhen Wang, Yang Li
Genome Announcements Sep 2014, 2 (5) e00885-14; DOI: 10.1128/genomeA.00885-14

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Draft Genome Sequence of Pseudoalteromonas sp. Strain A2, an Isolate with High Antioxidative Activity from Arctic Seawater
Xuezheng Lin, Zhen Wang, Yang Li
Genome Announcements Sep 2014, 2 (5) e00885-14; DOI: 10.1128/genomeA.00885-14
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