SGD Quarterly Newsletter, Winter 2008

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About this newsletter:

This is the January 2008 issue of the quarterly SGD newsletter. The goal of this newsletter is to inform our users about new features in SGD and to foster communication within the yeast community. You can also subscribe to SGD's RSS feed to receive updates on SGD news -

Curation Focus: Inositol phosphate metabolism

In recent years, the inositol pyrophosphate IP7 (also known as PP-IP5) has been shown to be involved in regulating diverse processes such as DNA repair, phosphate homeostasis, chemotaxis, and insulin release (reviewed in Bennett M, et al. 2006). Information about the genes involved in the phosphorylation of inositol 1,4,5-trisphosphate (IP3) to IP7 (ARG82/YDR173C, IPK1/YDR315C, KCS1/YDR017C, VIP1/YLR410W) has been reviewed and updated at SGD. In addition, the biochemical pathway depicting inositol pyrophosphate biosynthesis has been added to the Yeast Biochemical Pathways.

Curation Focus: Yeast Biochemical Pathways

All 133 pathways available from the Yeast Biochemical Pathways have been manually reviewed and referenced. In addition, pathways that have not been documented to occur in yeast have been removed. Curation of pathways unique to S. cerevisiae is ongoing, and we welcome feedback from the research community.

The yeast biochemical pathways data are available from SGD's FTP site in two files: the file and yeastcyc11.0.tar.200801.gz. These files are updated monthly. In addition, for easy download and accessibility, the yeastcyc11.0 data files have also been made available for download through the Pathways PGDB Registry for use with the Pathway Tools software.

New icon identifies references with curated data sets

A new green icon providing a hyperlink to the Yeast Functional Genomics Database (YFGdb) is now provided for literature references associated with curated genomics data sets. YFGdb is an ongoing project at the Lewis-Sigler Institute for Integrative Genomics at Princeton University; its goal is to collect, curate, and disseminate all yeast functional genomics data by providing a means to view and download the data. Currently, there are links from over 450 papers in SGD to the corresponding YFGdb pages. View references curated to the literature topic Genomic expression study for examples.

GO Slims updated

SGD has updated the Yeast GO Slim, the Macromolecular Complex GO Slim, and the file on the FTP site. The Yeast GO Slims are a set of high-level GO terms that best represent the major biological processes, molecular functions, and cellular components that are found in S. cerevisiae. GO Slim terms are useful in mapping precise, "granular" gene annotations to more general "high-level" terms. These terms have been selected by SGD curators based on annotation statistics and biological significance.

  • Six new terms were added to the Yeast Biological Process GO Slim and two to the Yeast Molecular Function GO Slim. The Yeast GO Slims are available for analysis via the GO Slim Mapper tool and the Advanced Search tool. Mapping of all the yeast gene products to the Yeast GO Slims is also available as a graphical view on the Genome Snapshot page and via the file on the FTP site.
  • The Macromolecular Complex GO Slim now only includes macromolecular complex terms that have been used to annotate S. cerevisiae gene products. The Macromolecular Complex GO Slim is available for analysis via the GO Slim Mapper tool and a mapping of all the yeast gene products to these Slim terms is available via the file on the FTP site.
  • The data in the file on the FTP site are now identical to the data generated by the GO Slim Mapper web interface. In contrast to previous versions of this file, annotations are now mapped to all available GO Slim terms regardless of distance to a GO Slim term.

2008 NAR Database article: New data sources and annotation methods for GO annotations

The 2008 Nucleic Acids Research Database issue is now available. This issue includes a paper (HTML|PDF) by the SGD staff describing the annotation methods used to assign GO annotations at SGD.

Coming Soon: GO annotations with IEAs to be added to SGD's gene_association file on March 8th

On March 8, 2008, SGD will change the contents of our files that contains GO annotations. This is a major change as we will add annotations that are associated with computationally predicted methods. The SGD file currently does not include annotations that are made using the IEA evidence code. These annotations include computationally predicted annotations to the Gene Ontology created by the Gene Ontology Annotation (GOA) project at EBI, Hinxton UK. The file available from the GO Consortium is called gene_association.sgd. More information about this upcoming change will be posted on the home page, included in the next newsletter, and also included in our upcoming RSS feed.

6 new Summary Paragraphs

Summary Paragraphs summarize published biological information for a gene/feature, and are designed to familiarize both yeast and non-yeast researchers with the general facts and important subtleties regarding a locus. During the last quarter (November 2007 - January 2008), new summary paragraphs for the following 6 features have been added to their respective Locus Summary pages:

List of Summary Paragraphs Added During the Last Quarter

5 sequence/annotation changes made to the systematic sequence of S. cerevisiae

As new data become available, SGD curators update the systematic sequence and its annotation. Information regarding sequence and annotation changes can be found via the Summary of Chromosome Sequence and Annotation Updates and in the "Locus History" pages of affected features. Files on the SGD FTP site are updated weekly. During the last quarter (November 2007 - January 2008), annotation changes were made affecting 5 features and 0 new features were added.

Chromosome Sequence/Annotation Changes New Features Added
I None None
II None None
IV None None
V None None
VI None None
VII EFG1/YGR271C-A, YGR272C None
VIII None None
IX None None
X None None
XI None None
XII None None
XIII None None
XIV None None
XV None None
XVI None None
Mito None None

Community News

A link to the YEASTRACT (Yeast Search for Transcriptional Regulators And Consensus Tracking) database has been added to SGD's External Links page. YEASTRACK (described in Monteiro et al. (2008), Nucleic Acids Research 2008 36(Database issue):D132-D136), is a curated database of information on transcription factor binding sites and regulatory associations between transcription factors and their target genes. It contains tools for searching regulatory associations, for analyzing promoter motifs and transcription factor binding sites, and for generating graphical displays of regulatory networks.

Upcoming Conferences and Meetings

Information on registration and abstract deadlines for the following conferences is available at:

  • British Yeast Group Meeting 2008
NUI Maynooth, Ireland
March 18 - March 20, 2008
  • 6th International Meeting on Yeast Apoptosis
Leuven, Belgium
April 30 - May 4, 2008
Abstract Deadline: February 1, 2008
  • Gene Transcription in Yeast
Saint Feliu de Guixols, Spain
June 21 - 26, 2008
  • Yeast Chromosome Structure, Replication & Segregation
Carefree Resort, Carefree, AZ
June 22 - June 27, 2008
  • Cellular & Molecular Fungal Biology
Holderness School, Plymouth, NH
June 29 - July 4, 2008
Application Deadline: June 8, 2008
  • Yeast Genetics and Molecular Biology Meeting*
University of Toronto, Toronto, Ontario, Canada
July 22-27, 2008
Abstract Deadline: April 7, 2008
  • Plant & Fungal Cytoskeleton
Il Ciocco, Lucca (Barga), Italy
August 3 - 8, 2008
Application Deadline: July 13, 2008
  • 12th International Congress on Yeasts
Kyiv Aviation University, Kyiv (Kiev), Ukraine
August 11 - August 15, 2008

asterisks indicate attendance by SGD.*

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