Overview
From version 2.1 PiMS provides support for DNA (non-protein) Targets. These are Targets which do not lead to protein production. This functionality can be used to record Target and Construct details for projects where non-coding regions of genes, such as promoter regions, are cloned.Such Target and Construct records can be used in the same way as standard PiMS Targets and Constructs.
Thanks to the OPPF for the 5'-extension sequences
Contents
- New DNA Target Recording non-protein Targets
- DNA Target Details
-
- Form details as recorded
- Target-related Information
- Recoding a Construct for a DNA Target
- DNA Construct Details
- Back to the Guide to using PiMS Target and Construct Management
New DNA Target: Recording non-protein Targets
DNA Target Details
back to topThe DNA Target Details View is displayed after clicking the button when you record a new DNA Target in PiMS.
You can also see the details for a DNA Target when you:
-click the magnifying glass
icon next to the record in the results from a 'Target Search' or the 'Browse Targets' page.
-select 'View' from the context menu for a DNA Target record in the 'History' brick on the PiMS Home page.
The Target details view page includes an icon, identifying the view as a PiMS Target, a link to a list of all Targets in PiMS, and updatable information, about the individual Target, in a series of PiMS boxes.
Target details as recorded
- The first box, which is open by default, includes the Target names, source organism, function, the name of the scientist responsible for the Target and
any additional comments.
If you have permission to edit the Target details, you will see
Make Changes...
at the bottom right hand side of the box. -this is not displayed in the example - Open the box labelled DNA Sequence to see the Target DNA sequence.
The length and % of GC nucleotides in the sequence are also shown.
Click Fasta pop-up to see the entire Target DNA sequence in Fasta format.
- Details of any Constructs which have been recorded for the Target will appear in the box labelled 'Constructs'.
-there are no Constructs recorded for the Target in the example.

- Click New Construct to record the details for a Construct.
-see Recoding a New Construct for a DNA Target
note: It is not possible to record Construct details if the DNA sequence is <50 nucleotides long.
This will be indicated by the following message:
- Database References for the Target are listed in the box labelled 'Database references'.

Click the link in the 'Accession' column to view the web page.
-the example shows a link to a GenBank reference created from the value entered for the GI number when the Target details were recorded in PiMS. - Open the Box labelled 'Blast searches' then click EMBL Blast results to see the results of a Blast search against the EMBL database.
-see Blast help for more details. - The boxes labelled 'Images' and 'Attachments' allow you to associate images, with legends, and other files
with the Target.
- The box labelled 'Notes' is to record any additional details about the Target. Each note is saved with the date it was recorded allowing you to track any changes made to the Target detals.
Target-related Information
The lower part of the DNA Target Details View contains additional information about the Target.
This includes details of any Constructs, Experiments and Database references which may have been recorded for the Target.
- The first box, which is open by default, includes the Target names, source organism, function, the name of the scientist responsible for the Target and
any additional comments.
Recording a New Construct for a DNA Target
back to topTo record a new 'Construct' for a DNA Target either:
-click New construct on the Target Details page
or:
-select
New Construct...
from the 'Context menu' for a DNA Target in the 'History' brick on the Home page.

You will see Step 1 of the New DNA Construct wizard.New DNA Construct Step 1: Basic details
The DNA Target sequence is displayed along with a form to define the region of the sequence to be used for the Construct.

- Enter the start and end nucleotides for the Construct.
By default these are the first and last nucleotides in the DNA sequence. 1 and 576 in the example - Enter an identifier for the new Construct; this will be appended to the Target name to create the Construct Name
- Click to proceed to Step 2.
If you enter unsuitable values for the start and end nucleotides you will see an appropriate warning:

if you enter a value < 1 for the start nucleotide

if the Construct id value has already been used for a Construct for this Target

if the start nucleotide position is > the end nucleotide position

if the length of the selected region is < 50 nucleotides
New DNA Construct Step 2: Select Primers
Step 2 displays 3 PiMS boxes.
The first contains the Target DNA sequence.
The second, labelled 'Basic details from Step 1 for:' contains the Construct Id, generated from the Target Name and the id value entered in Step 1 -in the example this is 000918.con1,
and the Start and End nucleotides defined in Step 1 -in the example these are 145, 500.
It also shows that a default value of 60°C is used to design Primers for the Construct.
Below this is the Construct DNA sequence.

The third box contains a list of suggested Forward and Reverse Primers:

- If there are no suitable primers enter a different Primer design Tm value and click
to see updated lists.
- Click the radio buttons to select 1 Forward and 1 Reverse primer then Click
to proceed to Step 3
- Click or the Browser back button, to return to Step 1
New DNA Construct Step 3: Primer Extensions
Step 3 displays 4 PiMS boxes. These contain the "Target DNA sequence" and the "Basic details from Step 1".
The third box displays the details of the primers selected in Step 2 including: the sequence, length, Tm and % of GC nucleotides for the Forward and Reverse primer.
The fourth box, labelled "Primer 5'-Extensions" includes drop-down lists of 5'-extensions for the primers.
note: the 5'-extensions are PiMS Reference data.
You can see a complete list of all the 5'-extensions in PiMS by clicking Extensions List

- Click in a box to see the list of available 5'-Extensions for the Forward or reverse primer.

- Select a 5'-Extension to add to your primer sequence
- or select 'none' if you do not wish to add a 5'-Extension to your primer.
- If the list does not contain a suitable sequence, select *Record a new 5'-extension*
You will see two new fields to enter a Name and Sequence for a new 5'-Extension for the Forward or Reverse primer.
-the example shows the fields displayed for recording a new Forward primer extension

- When you have completed your selection click to proceed to Step 4
- or click or the Browser back button, to return to Step 2.
New DNA Construct Step4: Construct Summary
Step 4 displays 4 PiMS boxes.
These contain the "Target DNA sequence" and the "Basic details from Step 1".
The third box displays the "Primer details and properties".
This includes the Length, Tm and %GC for the both the complete sequence and the gene-specific region, or 'Overlap', for both the Forward and Reverse primers. The sequence of any '-extension is also shown.

The fourth box contains a form for recording some additional details:
- You may enter a short Description for the Construct.
More details can be entered in the Comments field - Select a Person from the drop-down list -the name of the user who is the currently logged in user is selected by default
- Click
to create a new Construct record in PiMS or Click the
button, or the Browser back button, to return to Step 3

The Table includes the Construct Name, derived from the Target name and the Construct ID - '000918' and 'con1' in the example
and any description entered in Step 4 - 'Novagen EK/LIC' in the example.
- Enter the start and end nucleotides for the Construct.
DNA Construct Details
back to topThe Construct details view is displayed when you:
-click the link in the 'Construct Name' column in the Constructs table on a DNA Target details View
-select a 'Construct/Target' link from the History menu
-select
View from a Construct context menu
in the 'Constructs no progress' or 'History' brick on the PiMS Hone page.

The Construct Details View includes:
- Sequences of the entire Forward & Reverse Primers, the Gene-specific region and any 5'-Extension
- The Length, Tm and %GC for the entire Forward & Reverse Primers and the Gene-specific region
- Predicted PCR product sequence, length and %GC
- Editable of a Description and Comments fields
- A link to the PiMS record for the Scientist responsible for the Construct

- Sequences of the entire Forward & Reverse Primers, the Gene-specific region and any 5'-Extension




Protein Information Management System