Help:2013 DNA Distribution

Revision as of 21:35, 31 May 2013 by IGEM HQ (Talk | contribs)


The 2013 Distribution contains over 1000 part samples as dried (miniprepped) DNA, with each sample QC tested through sequencing, AB test plates, and restriction digests. While there is not enough DNA for assembly, you will be able to transform the DNA into cells and then make your own glycerol stocks of any part you wish.

If you're new to the Registry, iGEM, or synthetic biology, you'll want to read through our Help pages before you get started. The Learn section is the best place to start, and will take you through the basics.

Otherwise, read on!


Changes to the 2013 DNA Distribution

We’ve made some important changes to this year’s DNA Distribution!
Green BulletPt.png Quality: In making this distribution, we selected only parts that had their sequence’s fully confirmed or ends confirmed (long parts). Learn more...
Green BulletPt.png Standardized: All parts in Kit Plates 1 to 4 are in pSB1C3, the shipping standard plasmid backbone for the iGEM Registry. Learn more...
Green BulletPt.png Confidence: We’ve included the Transformation Efficiency Kit, so that you can test the transformation efficiency of your competent cells. Learn more...


What's included in the 2013 Distribution

Your Spring 2013 Distribution contains the following:
Green BulletPt.png DNA Distribution Kit Plates 1 - 4
Green BulletPt.png DNA Distribution Kit Plate 5 (Supplemental Plate)
Green BulletPt.png Linearized Plasmid Backbones
Green BulletPt.png Transformation Efficiency Kit
Green BulletPt.png iGEM Stickers and Pins! (iGEM teams only)

If there is an issue with your distribution kit, please send us an email to hq (at) igem . org


DNA Distribution Kit Plates

In making this year’s distribution, we selected only parts that had their sequence’s fully confirmed or ends confirmed (long parts > 1600bp). All parts underwent an additional round of our quality control process: sequencing, restriction digests & gels, and antibiotic testing. This has ensured a high quality distribution, in which all parts have a sequence result of Confirmed, Partially Confirmed or Long Part. Be sure to take a look at the quality control results before using a part!

Kit Plates 1 - 4

In addition to all the new parts that have been submitted to the Registry, we have transferred over many of our existing sequence verified parts into pSB1C3, the Registry’s shipping standard plasmid backbone. All of the parts in DNA Distribution Kit Plates 1 to 4 are in pSB1C3.

  • all of the parts are flanked by the BioBrick prefix and suffix.
  • pSB1C3 has our standard primer sites (VF2 and VR), so you can sequence all parts with the same primer set.
  • pSB1C3 has a high copy origin, improving yields for minipreps
  • pSB1C3 is chloramphenicol resistant, so growing and maintaining parts only requires a single antibiotic

Kit Plate 5

Kit Plate 5 is a supplemental plate for the 2013 DNA Distribution. It contains high quality parts which have yet to be transferred into pSB1C3 as well as alternate samples for parts that are already in pSB1C3.

Transformation Efficiency Kit

Whether you’re purchasing competent cells or making your own in the lab, you should test their efficiency before you use them with the parts in the DNA Distribution Kit Plates. The Transformation Efficiency Kit is a standardized way to test and calculate the efficiency of your competent cells. If you have issues with using the parts in the Distribution Kit, the first thing we’ll need to know is the efficiency of your competent cells.

See the Transformation Efficiency Kit page for more in-depth instructions. Note: The Transformation Efficiency Kit should be stored at 4C or -20C.

Linearized Plasmid Backbones

The 2013 Distribution Kit also includes a set of four linearized plasmid backbones: pSB1A3, pSB1C3, pSB1T3, and pSB1K3.m1. These plasmid backbones have been prepared via PCR and purified. Prior to ligation the linearized backbones will need to be digested with with EcoRI, PstI and DpnI (DpnI is optional: to cut up original template DNA used to create linearized plasmid backbone), leaving two ends ready to be ligated to a Biobrick™ part. All 2013 submissions will need to be in pSB1C3, so we recommend using our pSB1C3 linearized backbone for that purpose.

See the Linearized Plasmid Backbone protocol page for more in-depth instructions on how to use them and make your own. Note: The Linearized Plasmid Backbones (25ng/ul at 50ul) should be stored at 4C or -20C.


Getting Started

Locating a Part in the Distribution

Before using the DNA plates, you should search the Registry for useful parts, which will also tell you if it has an available sample, its location (if they're in your 2013 Distribution), requirements, quality control (if they're correct), etc.

You can also browse the contents of the 2013 Distribution in their entirety.

Searching

  • The Catalog of Parts and Devices will allow you to browse parts and devices by various criteria, including function, chassis, standard, etc.
  • The Search Tools will let you search by text or part name <more>.
  • It is also possible to see the contents of the Kit Plates in their entirety. You can look at the DNA Repositories section on the main page.
    • Click on 2013 Distribution to see the contents of all of your kit plates.
    • Click on the 2013 Kit Plate of your choice, which will list all parts by their part name (BBa_..) in a plate along with their quality control information. Or you can click on the small part diagram below each Kit Plate link: "See a summary of the parts in this plate."
    • These options will show you what is in each well of your plate, however they are not the best way to find specific parts you would like to use.

Availability

If you find a part that you would like to use, you need to make sure that a sample of the part is actually available. There are many parts in the Registry that people are still working on, or decided not to continue working on anymore, therefore we never received or do not yet have the physical DNA for them. This of course means that the DNA is not available in the Spring 2013 DNA Distribution. The simplest way to tell whether the part has an available sample is to look at the top right of the part's Main Page. If the part has an available sample the top part of the box will be green and say "DNA available."

Requesting a part

We've taken care to create a very well-rounded DNA Distribution this spring, however, should you find the part, or parts, that you require are not available in the distribution but available in the Registry's Repository, send us an email (hq [AT] igem [DOT] org) in order to request a sample. Just include the part name, the plasmid it's located in, and the source, and we'll send it out to you. For more information please see the Requesting Parts page

Using the online QC resources

Here at Registry, we want everyone to take a look at the results of the quality control measures we've taken this year and previous years, in order to make an informed decision when choosing to use a part. We've made sure to update the online repository for the Spring 2013 distribution with our quality control results.

The best way to use our quality control information is to use it on a part by part basis. As you design your project, make sure to check every part that you're interested in for its QC data. After searching for a part in the registry and arriving at its main page, click on the Get This Part link which will take you to the section listing various quality control information for a samples of that part and its location within the registry.


Using the Spring 2013 DNA Distribution

Storage

Since the distribution kit plates are comprised of dried DNA, they are quite stable for storage at room temperature. However once the DNA is resuspended in any of the wells, we recommend either storing the kit plate with its plastic cover in a -20C freezer, or aspirating the rest of the resuspended DNA from the well and keeping it separately in a -20C freezer.

The linearized plasmid backbones (25ng/ul at 50ul) should be stored at 4C or lower.

DNA Kit Plate Orientation

Locating Your Part from iGEM Videos.

Top view of plates containing dry DNA; red circle indicates well 13H

The foil covers on each 384 well kit plate can be easily punched through with a pipette tip into the well of your choice. Unfortunately, the foil cover will also obscure both column and well markings. You can still find your part by correctly orienting the plate using the two notched corners as markers: well A1 is located at the upper left corner of the plate when the long side of the plate with the notched corners is considered the bottom.

Once you know the location of your part, you will want to count across the plate starting with Column 1 until you get to Column 13 and down the plate starting with Row A until you get to Row H.

Make sure that the two notched corners of the plate are oriented at the BOTTOM of the plate (see the "top view" image on the right for correct orientation)

DNA Kit Plate Instructions

Before you use the DNA in the Distribution Kit Plates, be sure to test the efficiency of your competent cells with the Transformation Efficiency Test Kit.

To use the DNA in the Distribution Kit, follow these instructions:
Note: There is an estimated 2-3ng of DNA in each well, following this protocol, assume that you are transforming with 200-300pg/ul

  1. With a pipette tip, punch a hole through the foil cover into the corresponding well of the part that you want. Make sure you have properly oriented the plate. We recommend that you do not remove the foil cover, as it could lead to cross contamination between the wells.
  2. Pipette 10uL of dH2O (distilled water) into the well. Pipette up and down a few times and let sit for 5 minutes to make sure the dried DNA is fully resuspended. We recommend that you do not use TE to resuspend the dried DNA.
  3. Transform 1ul of the resuspended DNA into your desired competent cells, plate your transformation with the appropriate antibiotic* and grow overnight.
  4. Pick a single colony and inoculate broth (again, with the correct antibiotic) and grow for 16 hours.
  5. Use the resulting culture to [http://openwetware.org/wiki/Miniprep/Kit-free_high-throughput_protocol miniprep] the DNA AND make your own glycerol stock (for further instruction on making a glycerol see [http://openwetware.org/wiki/Endy:Making_a_long_term_stock_of_bacteria this page]). We recommend using the miniprepped DNA to run QC tests, such as restriction digests and sequencing.

* To know which antibiotics to use, look at the plasmid that the part is in. The naming scheme for plasmids is specifically designed to indicate antibiotic resistance.

Note: There is not enough DNA in each well to perform anything but transformations


Get & Use...

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