SGD Help: Chromosomal Features Table
Contents
The SGD Chromosomal Features Table helps researchers find and retrieve
DNA and protein sequences from the systematic sequencing project.
This table shows the beginning and endpoints of ORFs, other sequence features, and segements. Examples include the
segment E15,
the gene ACT1,
and the ORF YHR023W.
The first column in the SGD Chromosomal Features Table is the name of
the feature (an ORF or another genetic element, such as a tRNA, RNA
gene, Ty transposon or LTR element, rRNA or snRNA). Next are listed
the feature's beginning and ending chromosomal coordinates. Whether
the feature is encoded by the Watson or Crick strand is indicated by a
"w" or "c" in the "Strand" column. The DNA or protein sequence of the
feature (plus flanking sequence, if desired) can be retrieved in a variety of
forms by clicking on the blue "Gen/Seq Resources" listed under the
"Retrieve" heading. The "Info" option will lead to the locus
information for that feature. Clicking on the "Physical Map" will
show you the physical map
display of that region of the chromosome, showing the overlapping
lambda clones and cosmids. When an ORF has been shown to be a
particular gene, the name of the gene is listed in the "Locus" column
and is a link to the gene's Locus page. The "Locus Description"
column provides a short description of the feature based on
information in the SGD database. Unnamed ORFs with no information
will be denoted "Hypothetical ORF."
If the sequence is a segment from a
BLAST or FASTA search, the beginning and ending points of the gene
with respect to the 10 kb chromosomal segment are listed under
"Segment Coordinates." Note that if one of the endpoints is not
listed in one of these columns, then the DNA feature is not wholly
contained on that chromosomal segment.
Additional features to the right and left of the currently
selected coordinates can be displayed with the "Retrieve Features
Left" and "Retrieve Features Right" buttons. To retrieve the sequence of the displayed DNA or protein, or to view maps and other displays, click on the "Gene/Sequence Resources" link.
The Chromosomal Features Table can be accessed by:
- Entering the desired region in Gene/Sequence
Resources, pressing the submit form button, and then choosing "Chromosomal Features Table" as the display method
Go to Gene/Sequence
Resources
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