<div><p>Samples for molecular biological analysis were collected shipboard from 10 cm sections of the intact core using sterile cut-end 5 mL syringes. Samples were immediately frozen at –80 degrees C and maintained at this temperature during transport and storage to the home laboratory. Sorting of individual cells from unfixed frozen sediment from 97.41 mbsf was attempted for single cell genomics using the Single Cell Genomics Center (SCGC) at the Bigelow Laboratory for Ocean Sciences. While the sediment was not preserved with recommended fixatives to prevent cell lysis during storage, and although the samples had gone through at least one round of freeze-thaw for bulk DNA extraction which may have introduced cell lysis, the high relative abundance of target microorganisms in the sample suggested this approach might still be successful in recovering intact cells. Approximately 0.5 g of frozen sediment was diluted in 1 mL of filter-sterilized seawater and vortexed for 30 s to liberate cells from the sediment matrix, modifying methods developed previously. Sediment was then separated from cells by gentle centrifugation at 2000 rpm for 30 s The cell suspension was treated with SYTO-9 DNA stain and sorted into two 384-well plates using SCGC’s s tandard pipeline. Both sorted plates were subjected to physical lysis treatments (five freeze- thaw cycles), and the second plate also experienced an alkaline lysis treatment. DNA amplification by multiple displacement amplification.</p></div>
This is the manually curated genome of the SAG SCGC AD-561-N23
<div><p>This is the manually curated genome of the SAG SCGC AD-561-N23. Sampling occurred in the Adelie Basin during the Integrated Ocean Drilling Program (IODP) Expedition 318, aboard R/V JOIDES Resolution, Site U1357.</p></div>
Candidate division JS1 bacterium
<div><p>The initial assembly of Atribacteria bacterium SCGC AD- 561-N23 is publically available within the IMG system (taxon ID 2588254308) and the sequence for the 16S rRNA gene is available within the IMG system and Supplementary Materials. A detailed assembly procedure (QC.finalReport.pdf ) can be downloaded from: <a href="http://genome.jgi.doe.gov/CandivSCAD561N23/CandivSCAD561N23.download.html">http://genome.jgi.doe.gov/CandivSCAD561N23/CandivSCAD561N23.download.html</a>.</p>
<p>Briefly, single-cell amplified genomic (SAG) DNA was sequenced, assembled and annotated at the United States Department of Energy’s Joint Genome Institute (JGI) following their standard pipeline for Illumina HiSeq 2000 platform sequencing. Illumina reads were screened using JGI’s in-house DUK filtering program (Mingkun et al., unpublished). Trimmed reads were assembled using SPAdes (version 3.0.0) with the following parameters (–t 8 –m 40 – –sc – –careful – –12; Bankevich et al., 2012). Once released to Integrated Microbial Genomes (IMG) system, manual screening and removal of potential contaminate sequences according to JGI’s single cell data decontamination protocol (Clingenpeel, 2015). Scaffolds with GC contents that varied from the genome average more than 10% and clustered as a distinct group according to a kmer analysis (IMG, fragment window 5000 bp, fragment step 500 bp, oligomer size 5, minimum variation 10) were identified as potential contaminates and were removed from the de novo assembly (with the exception of scaffolds that contained ribosomal DNA). This screened genome was submitted to the IMG database as GOLD project Gp0087948, titled "Candidate division JS 1 bacterium SCGC AD-560-N23 (manually screened)". Gene annotations were performed using both IMG and the Rapid Annotation using Subsystem Technology (RAST) platforms (Aziz et al., 2008; Overbeek et al., 2013 ;Markowitz et al., 2014). Discrepancies between annotations were investigated by comparing coding sequences of genes against GenBank non-redundant protein sequence and Swiss- Prot Databases by BLASTP (Altschul et al., 1990). Genome completeness was estimated by comparing the annotated genome sequence against a list of conserved single copy bacterial genes.</p>
<p>This screened genome was submitted to the IMG database as GOLD project Gp0087948 with an IMG taxon ID of 2626541500, and to MG-RAST under accession numbers 4624791.3–4634830.3.</p></div>
654189
Candidate division JS1 bacterium
2016-08-16T15:06:27-04:00
2016-08-16T15:06:27-04:00
2016-08-22T14:48:01-04:00
urn:bcodmo:dataset:654189
The manually curated genome of the SAG SCGC AD-561-N23; collected from R/V JOIDES Resolution JRES-318 from Wellington, New Zealand to Hobart, Australia from January to March 2010
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Carr, S., Spear, J., Orcutt, B. N. (2016) The manually curated genome of the SAG SCGC AD-561-N23; collected from R/V JOIDES Resolution JRES-318 from Wellington, New Zealand to Hobart, Australia from January to March 2010. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 16 Aug 2016) Version Date 2016-08-16 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/654189 [access date]
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16 Aug 2016
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2016-08-16
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