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1 of 38 Data Mining in Ensembl with BioMart
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2 of 38 Simple Text-based Search Engine
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3 of 38 ‘Mouse Gene’ Gives Us Results
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4 of 38 A More Complex Query is Not as Useful
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5 of 38 BioMart- Data mining BioMart is a search engine that can find multiple terms and put them into a table format. Such as: human gene (IDs), chromosome and base pair position No programming required!
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6 of 38 General or Specific Data-Tables All the genes for one species Or… only genes on one specific region of a chromosome Or… genes on one region of a chromosome associated with a disease
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7 of 38 BioMart Data Sets Ensembl genes Vega genes SNPs Markers Phenotypes Gene expression information Gene ontology Homology predictions Protein annotation
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8 of 38 Web Interface With BioMart, quickly extract gene-associated information from the Ensembl databases.
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9 of 38 Information Flow Choose the species of interest (Dataset) Decide what you would like to know about the genes (Attributes) (sequences, IDs, description…) Decide on a smaller geneset using Filters. (enter IDs, choose a region …)
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10 of 38 Web Interface Three main stages: Dataset, Attributes and Filters. Choose the species of interest Choose what information to view. Choose the gene set using what we know.
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11 of 38 The First Step: Choose the Dataset Homo sapiens genes are the default.
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12 of 38 The Second Step: Attributes Attributes are what we want to know about the genes. Four output pages.
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13 of 38 The SNP Attribute Page Output variation information such as SNP reference ID and alleles.
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14 of 38 Filters Allow Gene Selection Choose the gene set by region, gene ID(s), protein/domain type.
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15 of 38 Export Sequence or Tables Genes and attributes are exported as sequence (Fasta format) or tables.
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16 of 38 Query: For all mouse genes on chromosome 10 that are protein coding, I would like to know the IDs in both Ensembl and MGI. In the query: Attributes: what we want to know. Filters: what we know
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17 of 38 Query: For all mouse genes on chromosome 10 that are protein coding, I would like to know the IDs in both Ensembl and MGI. In the query: Attributes: what we want to know. Filters: what we know
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18 of 38 Query: For all mouse genes on chromosome 10 that are protein coding, I would like to know the IDs in both Ensembl and MGI. In the query: Attributes: what we want to know. Filters: what we know
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19 of 38 A Brief Example Change dataset to mouse Mus musculus
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20 of 38 A Brief Example Dataset has changed.
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21 of 38 Attributes (Output Options) Click Attributes. Attributes allow us to choose what we wish to know. IDs are found in the ‘Features’ page. Click on ‘GENE’.
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22 of 38 Default options selected: Ensembl Gene ID and Transcript ID Attributes (Output Options) Ensembl Gene ID is selected
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23 of 38 Scroll down to select MGI symbol. Also select the accession number. Attributes (Output Options) ‘Markersymbol ID’ will give us the MGI ID
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24 of 38 ‘Results’ give us Gene IDs for all mouse genes in the Ensembl database. The Results Table
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25 of 38 Select a Smaller Gene Set Select ‘Filters’ Expand the REGION panel Instead of all mouse genes, select protein coding genes on chromosome 10.
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26 of 38 Select Genes on Chromosome 10 Select chromosome 10 Instead of all mouse genes, select protein coding genes on chromosome 10.
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27 of 38 Select Protein Coding Genes Filters are set to chromosome 10 and protein-coding genes. Genes must meet BOTH criteria to be in the result table. Gene type: protein coding
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28 of 38 Results (Preview) This is a preview- if you are happy with the table, click ‘Go’. For the full result table: Go
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29 of 38 Full Result Table Ensembl Gene ID Transcript ID MGI symbol MGI Accession Number
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30 of 38 Original Query: For all mouse genes on chromosome 10 that are protein coding, I would like to know the IDs in both Ensembl and MGI. In the query: Attributes: columns in the Result Table Filters: what we know
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31 of 38 Other Export Options (Attributes) Sequences: UTRs, flanking sequences, cDNA and peptides, etc Gene IDs from Ensembl and external sources (MGI, Entrez, etc.) Microarray data Protein Functions/descriptions (Interpro, GO) Orthologous gene sets SNP/ Variation Data
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32 of 38 Central Server www.biomart.org
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33 of 38WormBase
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34 of 38HapMap Population frequencies Inter- population comparisons Gene annotation
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35 of 38 DictyBase
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36 of 38 Uniprot, MSD
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37 of 38 GRAMENE Rice, Maize, Arabidopsis genomes…
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38 of 38 How to Get There Either www.biomart.org/biomart/martview www.biomart.org/biomart/martview Or click on ‘BioMart’ from Ensembl
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Q & A Thanks Arek Kasprzyk Benoît Ballester Syed Haider Richard Holland Damian Smedley
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