DNA Sequencing

 
Our Sequencing Schedule
Sample Preparation
Sample Submission
Use Of This Website for Sample Submission
 
     
 

The Molecular Core is currently doing all its sequencing through Agencourt. This gives our users access to the latest sequencing technology and competative pricing.

Sequencing Offered

QuickLaneTM Sequencing Service

This service provides quick turnaround sequencing of purified individual samples, including PCR amplicons, low copy plasmids and high copy plasmids.  Single reads are performed on each sample using customer-provided primers or Agencourt-provided universal primers.  Samples can be submitted in 2D bar coded tubes or 96-well plates.  Primers can be mixed in with the template or sent in separate plate(s) or tube(s).  Data is posted to our secure FTP site 24 hours after sample receipt, or 48 hours if the samples need to be reworked. Note that an increased turn around time will result if Agencourt is required to purify the samples or design primers.

Primer Walking Sequencing Service

Agencourt will design and synthesize primers to obtain full length sequencing of PCR amplicons, plasmid inserts or entire plasmids.  You can select single strand or publication quality (double strand) coverage.  Turn around time is approximately 5-7 business days per round of walks, depending on the project, but may be expedited by sending reference sequence early.  Agencourt will deliver a contiguous consensus sequence in FASTA format.  You can submit 100 μL glycerol stocks in either 2D tubes or 96-well plates.

Single Pass Service

The Single Pass service is for high-throughput projects.  This service accepts full 96 or 384 well plates.  Plates will have the same template type (i.e. all PCR amplicons, or all plasmids).  The turn-around time for this service is approximately 7 business days.  Sample preparation is included in this service


 

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Sample Preparation

Automated sequencing is less tolerant to variations in sample and primer impurities than manual sequencing. Primer design has to be optimized for sequencing. Just because a primer works to amplify a PCR band does not necessarily guarantee that it will be a good DNA sequencing primer. See sequencing trouble shooting below.

DNA Preparation:

  1. Template DNA should be prepared as high-quality plasmidDNA or purified PCR product DNA.
  2. You must determine the concentration of your DNA carefully. Optimally a gel image will provide an indication of the template purity and the concentration.
  3. You will have to dilute the template to the concentration suggested on the web order form (see below).

Primers:

  1. Please provide primers at a concentration of 3.5pmol/µL or 20 ng/µl in water.
  2. Desalted primers usually are sufficient.

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Sample Submission

In Tubes:  For QuickLane, please send DNA in a 2D bar-coded tube.  For Primer Walking or unpurified plasmid template QuickLane Samples, please submit 100 μl of glycerol stock. 

In Plates:  Write plate name on the plate and Agencourt will barcode the plate when it is received at our facility and associate barcode with naming on plate. 

Primers:  Custom primers may also be submitted in tubes or 96-well plates.  For pre-designed primers, please submit primer sequence.  If you want Agencourt to design and synthesize primers for you, please submit reference sequence in FASTA format.  Turn around time can be expedited if you send sequence 3 business days prior to template shipment. 

 

Sample Drop Off:

  • Package your 2D-barcoded tubes or plates into a plastic bag, along with a completed Project Submission Form (PSF). 
  • Drop your samples to the Molecular Core. 
  • The samples will be sent out that night, via FedEx for overnight delivery.  The samples will arrive at Agencourt the following morning.
  • Agencourt will notify you of sample receipt and will begin processing samples first thing in the morning.

 

 

Sample Submission Guidelines:

You can always check the most current version of our Sample Submission Guidelines, which are posted in the Agencourt DNA Sequencing section of the UCHC Molecular Core website

 

Submitting Template and Primer Mixed:  The table below indicates concentration and volumes of DNA template and primer needed when mixed together.  Please consult the Sample Submission Guidelines for complete information.

Templates

Total Amount of DNA

Total Amount of Primer

Total Volume of Sample

High Copy Plasmids

0.6µg-1.0µg

20pmol

40µL

Low Copy Plasmids, Fosmids, Cosmids

0.6µg-1.0µg

20pmol

40µL

BACs

0.6µg-1.0µg

20pmol

40µL

PCR Products

(indicate size)

0.3µg-0.5µg

10pmol

20µL

GC Rich / Difficult Templates

0.6µg-1.0µg

20pmol

40µL

 

Submitting Template and Primer Unmixed:  The table below indicates concentration and volumes of DNA template and primer needed when they are not mixed together.  Please consult the Sample Submission Guidelines for complete information.

Template

Template Concentration

Volume of Sample per Reaction**

Minimum Sample Volume

High Copy Plasmids (Purified)

15-25ng/µL

10µL

40µL

Low Copy Plasmids,

Fosmids, Cosmids (Purified)

15-25ng/µL

20µL

40µL

BACs (Purified)

15-25ng/µL

20µL

20µL

PCR Products

(Purified and Unpurified)

(indicate size)

15-25ng/µL

5uL

20µL

GC Rich / Difficult Templates (Purified)

15-25ng/µL

20µL

40µL

Primer (regardless of template)

3.2pmol/µL

2µL

20µL

**To determine the total volume to submit, multiply the volume of sample by the number ofreactions needed. Total volume must be ≥ the minimum volume. Eg. 6 rxn x 10µL/rxn = 60µL

Submitting Unpurified Plasmid Glycerol Stock:  Agencourt offers purification of plasmid glycerol stocks.  Submit 100µL of plasmid glycerol stock per sample in 2D tubes or 96-well plates.  (To submit in plate format, the customer must submit 8 samples or more).  Please consult the Sample Submission Guidelines for complete information.

 

Agencourt Supplied Primers:  The table below contains a list of all Agencourt-supplied primers.  Please call your Account Manager if you require additional frequently-used primers to be added to this list:

Table II.  Available universal primers for custom sequencing.

Universal T7

5' TAA TAC GAC TCA CTA TAG GG 3'

M13-FWD

5' GTA AAA CGA CGG CCA GT 3'

M13-REV

5' CAG GAA ACA GCT ATG ACC 3'

SP6

5' ATT TAG GTG ACA CTA TAG 3'

Universal T3

5' AAT TAA CCC TCA CTA AAG G 3'

KBR/TJ

5' CTG GCC GTC GAC ATT TAG G 3'

2BP Clamp

5' TTT TTT TTT TTT TTT TTT TTT VN 3'

SeqL-A

5' TCG CGT TAA CGC TAG CAT GGA TCT C 3'

SeqL-B

5' GTA ACA TCA GAG ATT TTG AGA CAC 3'

 

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Use of the Web Site for Submitting Sample for Sequencing

Setting Up a New Account:

  • Go to the Molecular Core Website, which can be found at the following URL in your web browser*:  http://mc.uchc.edu/mc/index_molecore.htm
  • Log into the UCHC Molecular Core Website, using your current username and password.
  • Click on the “Agencourt DNA Sequence” link from the menu on the left.
  • In the Table labeled “The Steps to Use Agencourt DNA Sequencing Services”, subsection “The steps before using Agencourt DNA Sequencing Services”, click on Item #1, “New Agencourt Account”.
  • You will now enter the Agencourt Project Submission Form (PSF) Account Registration Page.  Here you will enter your personal account information.  Note:  please use your @uchc.edu e-mail address.  When your information is complete, click the “Submit” button.
  • You will return to the Molecular Core Website, and click #2, “Save Agencourt Account Information”.  Here you will add your Agencourt username and password to your UCHC Molecular Core profile.  Note, you will only have to do this step once.

New Project Creation:

  • Go to the Molecular Core Website, which can be found at the following URL in your web browser*:  http://mc.uchc.edu/mc/index_molecore.htm
  • Log into the UCHC Molecular Core Website, using your current username and password.
  • Click on the “Agencourt DNA Sequence” link from the menu on the left.
  • In the Table labeled “The Steps to Use Agencourt DNA Sequencing Services”, under the subsection “The Steps to Use Agencourt DNA Sequencing Services”, click on # 2 “New Order From Molecular Core”. 
  • Choose the appropriate “FRS Account Number”.  Complete the form by entering the project details (project name, reaction number, etc.) and then click “Submit”.
  • Look for the “Agen” blue hyperlink (located to the left of the Project Name), and click on it to get to the Agencourt Online Project Submission Form (PSF).
  • Once inside the the PSF, complete your project information (i.e. template, primer, etc.).
  • In the P.O. field, enter “UCHC” (confidential).
  • Click the “Submit” button.  Print the Summary Page, and enclose it with your samples.
  • For questions regarding the Agencourt PSF, please contact your Agencourt Team (see Page 3 below) or call Customer Service at 800-361-7780 or the UCHC Molecular Core at 860-679-3720.
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