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Title: The complete genome sequence of the yogurt isolate Streptococcus thermophilus ACA-DC 2

Journal Article · · Standards in Genomic Sciences
 [1];  [1];  [2];  [3];  [1];  [1]
  1. Agricultural Univ. of Athens (Greece). Dept. of Food Science and Human Nutrition. Lab. of Dairy Research
  2. Justus-Liebig-Univ. Giessen, Hesse (Germany). Bioinformatics & Systems Biology
  3. Vrije Univ., Amsterdam (Netherlands). Research Group of Industrial Microbiology and Food Biotechnology (IMDO)

Streptococcus thermophilus ACA-DC 2 is a newly sequenced strain isolated from traditional Greek yogurt. Among the 14 fully sequenced strains of S. thermophilus currently deposited in the NCBI database, the ACA-DC 2 strain has the smallest chromosome, containing 1,731,838 bp. The annotation of its genome revealed the presence of 1,850 genes, including 1,556 protein-coding genes, 70 RNA genes and 224 potential pseudogenes. A large number of pseudogenes were identified. This was also accompanied by the absence of pathogenic features suggesting evolution of strain ACA-DC 2 through genome decay processes, most probably due to adaptation to the milk ecosystem. Analysis revealed the existence of one complete lactose-galactose operon, several proteolytic enzymes, one exopolysaccharide cluster, stress response genes and four putative antimicrobial peptides. Interestingly, one CRISPR-cas system and one orphan CRISPR, both carrying only one spacer, were predicted indicating low activity or inactivation of the cas proteins. Nevertheless, four putative restriction-modification systems were determined that may compensate any deficiencies of the CRISPR-cas system. Furthermore, whole genome phylogeny indicated three distinct clades within S. thermophilus. Comparative analysis among selected strains representative for each clade, including strain ACA-DC 2, revealed a high degree of conservation at the genomic scale, but also strain specific regions. Unique genes and genomic islands of strain ACA-DC 2 contained a number of genes potentially acquired through horizontal gene transfer events, that could be related to important technological properties for dairy starters. Our study suggests genomic traits in strain ACA-DC 2 compatible to the production of dairy fermented foods.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1627071
Journal Information:
Standards in Genomic Sciences, Vol. 12, Issue 1; ISSN 1944-3277
Publisher:
BioMed CentralCopyright Statement
Country of Publication:
United States
Language:
English

References (55)

Complete sequence and comparative genome analysis of the dairy bacterium Streptococcus thermophilus journal November 2004
Mapping single molecule sequencing reads using basic local alignment with successive refinement (BLASR): application and theory journal September 2012
eggNOG 4.5: a hierarchical orthology framework with improved functional annotations for eukaryotic, prokaryotic and viral sequences journal November 2015
EDGAR 2.0: an enhanced software platform for comparative gene content analyses journal April 2016
The Pfam protein families database: towards a more sustainable future journal December 2015
REBASE—a database for DNA restriction and modification: enzymes, genes and genomes journal October 2009
IslandViewer 3: more flexible, interactive genomic island discovery, visualization and analysis: Figure 1. journal April 2015
Proposals Concerning the Higher Taxa of Bacteria journal January 1978
Specialized adaptation of a lactic acid bacterium to the milk environment: the comparative genomics of Streptococcus thermophilus LMD-9 journal January 2011
The CGView Server: a comparative genomics tool for circular genomes journal May 2008
The Combined Use of Whole-cell Protein Extracts for the Identification (SDS-PAGE) and Enzyme Activity Screening of Lactic Acid Bacteria Isolated from Traditional Greek Dairy Products journal November 1994
CRISPRFinder: a web tool to identify clustered regularly interspaced short palindromic repeats journal May 2007
Revival of the Species Streptococcus thermophilus (ex Orla-Jensen, 1919) nom. rev. journal October 1991
Probiotic Potential of Lactobacillus Strains Isolated from Sorghum-Based Traditional Fermented Food journal February 2015
The pathogenicity of the Streptococcus genus journal July 2013
BAGEL3: automated identification of genes encoding bacteriocins and (non-)bactericidal posttranslationally modified peptides journal May 2013
Approved Lists of Bacterial Names journal January 1980
MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for Bigger Datasets journal March 2016
Mikro-organismen bei den Wund-Infections-Krankheiten des Menschen. journal January 1884
Toward almost closed genomes with GapFiller journal January 2012
WebMGA: a customizable web server for fast metagenomic sequence analysis journal September 2011
The minimum information about a genome sequence (MIGS) specification journal May 2008
Influence of controlled pH and temperature on the growth and acidification of pure cultures of Streptococcus thermophilus 404 and Lactobacillus bulgaricus 398 journal December 1989
MP3: A Software Tool for the Prediction of Pathogenic Proteins in Genomic and Metagenomic Data journal April 2014
Gene Ontology: tool for the unification of biology journal May 2000
How microbes adapt to a diversity of food niches journal April 2015
MetaGeneAnnotator: Detecting Species-Specific Patterns of Ribosomal Binding Site for Precise Gene Prediction in Anonymous Prokaryotic and Phage Genomes journal October 2008
Advantages of combined transmembrane topology and signal peptide prediction--the Phobius web server journal May 2007
Complete Genome Sequence of Streptococcus thermophilus Strain ND03 journal December 2010
Potential of lactic acid bacteria isolated from specific natural niches in food production and preservation journal December 2006
Diversity, Activity, and Evolution of CRISPR Loci in Streptococcus thermophilus journal December 2007
Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya. journal June 1990
Prodigal: prokaryotic gene recognition and translation initiation site identification journal March 2010
Biochemistry, Genetics, and Applications of Exopolysaccharide Production in Streptococcus thermophilus: A Review journal February 2003
Genomic Analysis of Dairy Starter Culture Streptococcus thermophilus MTCC 5461 journal January 2013
MUSCLE: multiple sequence alignment with high accuracy and high throughput journal March 2004
Rapid extraction of bacterial genomic DNA with guanidium thiocyanate journal April 1989
Lactic acid bacteria as functional starter cultures for the food fermentation industry journal February 2004
Circoletto: visualizing sequence similarity with Circos journal August 2010
SSPACE-LongRead: scaffolding bacterial draft genomes using long read sequence information journal June 2014
GenePRIMP: a gene prediction improvement pipeline for prokaryotic genomes journal May 2010
Streptococcus thermophilus strains: Multifunctional lactic acid bacteria journal March 2010
Diversity of Streptococcus thermophilus in bacteriocin production; inhibitory spectrum and occurrence of thermophilin genes journal August 2013
The RAST Server: Rapid Annotations using Subsystems Technology journal January 2008
Genomic islands: tools of bacterial horizontal gene transfer and evolution journal March 2009
List of new names and new combinations previously effectively, but not validly, published journal April 2015
An SHR–SCR module specifies legume cortical cell fate to enable nodulation journal December 2020
List of new names and new combinations previously effectively, but not validly, published journal March 2020
List of new names and new combinations previously effectively, but not validly, published journal November 2017
Genomic islands: tools of bacterial horizontal gene transfer and evolution text January 2009
The Road Map to the Manual book September 2015
REBASE—a database for DNA restriction and modification: enzymes, genes and genomes journal November 2014
eggNOG 4.5: a hierarchical orthology framework with improved functional annotations for eukaryotic, prokaryotic and viral sequences text January 2016
Dietary palmitic acid promotes a prometastatic memory via Schwann cells journal November 2021
Characterization and phylogenetic analysis of the complete mitochondrial genome of the pathogenic fungus Ilyonectria destructans journal February 2022

Cited By (4)

Complete Genome Sequence of Industrial Dairy Strain Streptococcus thermophilus DGCC 7710 journal February 2018
Production of Gamma-Aminobutyric Acid from Lactic Acid Bacteria: A Systematic Review journal February 2020
Comparative Genomics of Streptococcus thermophilus Support Important Traits Concerning the Evolution, Biology and Technological Properties of the Species journal December 2019
Genome Analysis and Physiological Characterization of Four Streptococcus thermophilus Strains Isolated From Chinese Traditional Fermented Milk journal February 2020