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Features must be separated by carriage returns. They may be typed directly into the Enter Genomic Features section or uploaded as a file. An optional comment may be provided by inserting a comma after the feature followed by the comment. The status indicator in the upper right of the features window turns green after a query and indicates that your features are now saved on the server. If you do not change these features, it will remain green and those features can be used for future queries. This saves the time of processing the features. The indicator turns red when you modify the queries. There is currently no undo mechanism, although your web browser may provide such a feature.
Subtopics
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Working with Features
When you click the Get/Configure Features button any features you have entered will be processed and the following section appears (you do not have to enter features to view this section):
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Additional information on the selected feature table, including the list of keywords that can be used to populate the table, can be found below the column descriptions:
Interpopulation of Features
Below the feature tables is the Interpopulation Relationships section. This section describes how the selection of certain features, such as genomic regions, can automatically trigger the selection of other features, such as genes in the region. In other words, the Genomic Regions feature will populate Ensembl Genes and we call this an interpopulation relationship.
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You may change the order in which relationships are executed. For example, to find exonic 1000 Genomes variants in a region using Ensembl data you may want to ensure that Ensembl Exons populates 1000 Genomes Sites after Genomic Regions populates Ensembl Exons.
Using Keywords to Specify Features
The bottom of the Genomic Features sectrion contains detailed information on how to specify features in the Enter Genomic Features section. Features are entered mainly by using keywords. A table of keywords is given - detailed information may be found by clicking on row. For some features the keywords are optional: for example, see the keywords DBSNP_SNP_ID and NCBI_GENE_SYMBOL.
Using Feature Tables in Queries
Some queries, such as the Genes query in the database Ensembl 64 - Human - Core, can be limited by certain feature tables:
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