INSERT a feature

<WRITEBACK>
   <MESSAGE>Treatment of Parkinson's Disease</MESSAGE>
   <FEATURE featureid="ADCK2" featuretype="exon" method="experiment">
       <LOC segment="7" range="140037029:140037082:+" />
       <PROPERTY phase="." />
       <PROPERTY score="" />
       <PROPERTY link="http://www.ensembl.org" />
       <PROPERTY groups="similarity" />
       <PROPERTY commit_msg="added a new feature ADCK2" />
       <PROPERTY user="http://user.myopenid.com/" />
       <PROPERTY system_uri="CS_DS82" />
   </FEATURE>
</WRITEBACK>

UPDATE a feature

<WRITEBACK>
   <MESSAGE>Treatment of Parkinson's Disease</MESSAGE>
   <UPDATES>
       <UPDATE uri="ADCK2" />
   </UPDATES>
   <FEATURE featureid="ADCK2" featuretype="exon" method="experiment">
       <LOC segment="7" range="140037029:140037082:+" />
       <PROPERTY phase="." />
       <PROPERTY score="10" />
       <PROPERTY link="http://www.ensembl.org" />
       <PROPERTY groups="similarity" />
       <PROPERTY commit_msg="updated feature ADCK2" />
       <PROPERTY user="http://user.myopenid.com/" />
       <PROPERTY system_uri="CS_DS82" />
   </FEATURE>
</WRITEBACK>

DELETE a feature

<WRITEBACK>
   <DELETES>
      <DELETE uri="ADCK2" />
   </DELETES>
   <FEATURE >
       <PROPERTY commit_msg="deleted feature ADCK2" />
       <PROPERTY user="http://user.myopenid.com/" />
       <PROPERTY system_uri="CS_DS82" />
   </FEATURE>
</WRITEBACK>

<writeback>

(required)

The root element.

<message>

(optional)

A human-readable message about the feature. Field "NOTE" on the submission form.

<uppdate>

or

<deletes>

(required)

This element has a "uri" attribute with the id of the feature to update.

<feature>

(required)

FEATURE element has three attributes: "featureid", "featuretype" and "method".

• featureid" attribute is a unique identifier for the feature.

Field "FEATURE ID" on the submission form.

• featuretype" indicates the type of the feature, i.e. gene, exon etc.

Field "FEATURE TYPE" on the submission form.

• method" identifies the method used to identify the feature.

Field "METHOD" on the submission form.

<loc>

(required)

LOC element has two attributes : "segment" and "range".

• segment" provides information about the reference segment of the coordinate system.

Field "SEGMENT ID" on the submission form.

• range" consists of start:stop:strand attributes indicating the position of the segment.

Whereas "start" and "end" correspond to start and end of the feature in the reference segment, specified by the "segment" attribute.

If the feature is non-positional, for example literature references, then start=end=0.

Strand indicates the orientation of the feature relative to the direction of transcription.

It may be 0 for features that are unrelated to transcription, +, for features that are on the sense strand, and -, for the features on the antisense strand.

Fields "START", "END", "STRAND" on the submission form.

<PROPERTY phase> (required)

This attribute indicates the position of the feature relatively to open reading frame. It may be either "." or "0", if the feature is unrelated to a reading frame.

Field "PHASE" on the submission form.

<PROPERTY score> (optional)

This attribute is a floating point number indicating the "score" of the method used to find the current feature.

Field "SCORE" on the submission form.

<PROPERTY link> (optional)

A link to a web page that provides more information about the feature.

Field "LINK" on the submission form.

<PROPERTY groups> (optional)

Provides a group ID for the features, grouped together.

The canonical example is grouping of exons and introns, which belong to one gene, and therefore can be logically belong together.

Field "GROUP" on the submission form.

<PROPERTY commit_msg> (optional)

Plain-text note about made changes. Saved into HISTORY table.

Field "COMMIT MESSAGE" on the submission form.

<PROPERTY user> (required)

User Open-id indentifier. Provided on the login page. Saved into HISTORY table.

<property system_uri="CS_DS82">

</property>

(required)

Coordinate system id, obtained from the coordinate system table. Its meaning is to identify subset of biological data stored on the DAS server. More detailed explanation can be found here.