Team:Johns Hopkins/Notebook




iGEM Groups 1.0
iGEM Groups 2.01
iGEM Groups 2.02

Important reminders and notes

 [Make general comments here, so they don't get lost in peoples e-mail boxes]
 July 11: Primers for group 1 were delivered yesterday.
 July 11: Lab meeting at 7:30PM in the lab to go over miniprep protocol.
 July 15: Lab meeting at 6:30PM with Jessica. Have status reports ready. 
          Bring labtop if you can.
 July 17: Restriction Digest/Sequencing Preparation (with James) 6:00PM.
 July 21: 6:00PM or 6:30PM Lab meeting with Jessica. Have status reports ready.
 July 29: 7:00PM Lab Meeting. Meet in Conference Room across from lab. Have Status Reports ready
 Aug. 05: 7:00PM Lab Meeting. Meet in Conference Room across from lab. Have Status Reports ready.
 Aug. 12: 7:00PM Lab Meeting. Have Status Reports Ready. 
               Journal Club Topic: Fluorescent Proteins; James and Ingrid.
 Aug. 19: 7:00PM Lab Meeting. Have Status Reports Ready. 
               Journal Club Topic: Yeast Mating Pathway/MAP Kinase Pathway ; Jasper and Tejas
 Aug. 26: 7:00PM Lab Meeting. Have Status Reports Ready!
               Journal Club Topic: S. cerevisiae Promoters; Allison and Nate
 September: Do well in classes. Do what you can for the team when you can.
 October: Do well on midterms. Good Luck!!
 Oct. 28, 2008: 7:00 PM Lab Meeting,
 Nov. 4, 2008: 7:00 PM Lab Meeting,

Journal Club

8/12/08:Fluorescent Proteins- Ingrid and James
Fluorescent Protein Powerpoint
Paper: Green Fluorescent Protein as a Marker for Gene Expression

8/19/08: Yeast Mating Pathway/MAP Kinase Pathway- Jasper and Tejas
MAP Kinase Powerpoint , Paper: Map Kinase Scaffold

8/26/08: Yeast Promoters- Allison and Nate
Gene structure powerpoint
Genomic Footprinting of the Promoter Regions of STE2 and STE3 genes in the Yeast Saccharomyces cerevisiae
Additional Reading:
Interspecies variation reveals a conserved repressor of alpha-specific genes in Saccharomyces yeast
A genomic code for nucleosome positioning

09/02/08: Mating Type Regulation -Brian and Jonathan
Herskowitz- A Regularory Hierarchy for Cell Specialization in Yeast

09/09/08: Yeast as a model organism- Ambhi and Raghav
Yeast as a model organism (ppt presentation)
Functional characterization of the S. cerevisiae genome by gene deletion and parallel analysis
The original Yeast two hybrid paper


To upload data, go here, click on upload data, and provide the necessary information and results.

How to submit data:

1. log-in as you once had to from the website "login"

  • User: ****** etc...
  • Pass: ***** etc...

2. click on UPLOAD DATA from the 'x-files page'
3. add data etc.... and click submit: This generates a webpage and the URL to it is linked in the page you are directed to after you press submit. Copy that URL and past it into the wiki or into the web-browser url box to see what it looks like.
\* If you find that the picture you are uploading is not showing up e-mail Tejas.

Alternatively, you can also just upload files directly to the iGEM wiki. Either way is fine.

Status Reports

The status reports of each group below were continuously updated as we worked on the biobricks.
Click on the name of each group to find past status reports throughout the sex detector project.

To learn more about each biobrick, please refer to the Biobrick page.

GROUP 1: Fluorescent Proteins

Summary for Fluorescent Proteins Group

 Venus YFP (BBa_K110021) was able to be constructed and sequence verified(with one possible
 mutation), however due to being unable to RE digest the insert out of the biobrick
 vector, possibly due to contamination,  the part was not sumbittied to the registry... yet.
 We will submit it after it is verified, after the competition.
 To see info about this biobrick check out oru patrs:

GROUP 2: MATa Specific-promoters

Summary for MATa Specific Promoters Group

 We were able to produce sequence-verified clones of BBa_K110008 and BBa_K110016: .

GROUP 3: Short Two-Way Stops

 We were able to produce a truncated two-way terminator (thus a one way) 
 from the STE2 gene - BBa_K110012. Please see Link for information:

GROUP 4: Long Two-Way Stops & MAT(alpha) Specific Promoters

Summary for Long Two-Way Stops & MAT(alpha) Specific Promoters Group

 We were able to produce BBa_K110005 and BBa_K110006 (alpha Promoters) in iGEM vectors.
 Also BBa_K110003 was able to be produced and sequence verified. Check out these parts here

GROUP 5: MATa Specific Promoters II

Summary for MATa Specific Promoters II Group

 Part Description: Ste2 Promoter Reverse
 Summary here: We were able to grow colonies with sequence verified Ste2 promoters. 
   The promoter is currently located in a glycerol stock in pGEM vector. One attempt to 
   transfer to the iGEM vector has been made, unsuccessfully. This was due to a mistake 
   in protocol however, so final transfer to the iGEM vector should still be straightforward. 
   Progress on this bio-brick has been paused in order to focus on MFA1, which is more 
   applicable to our project design because this Ste2 designed for the wrong direction.
 Part no.: BBa_K110015
 Part Description: MFA1 Promoter Forward
 Summary here: We have been unable to get successful, sequence verified clones with 
   our MFA1 promoter thus far. We currently have a few samples of DNA ready to be tested 
   by restriction enzyme digest, and then, hopefully, sequencing.
For more information about the parts go to:

GROUP 6: Vectors

Summary for Vectors Group

 Date: July 31, 2008
 Status report by: Tejas
 Part no.: BBa_K1100XX -> BBa_K1100YY
 Part Description: Vectors for concatenating and executing BioBricks
 The vectors to be used were delivered to us in STABS from MIT. They are pSB4A5 (amp), pSB4C5
 (cam), pSB3K5 (kan), and pSB4K5 (kan). The vectors come pre-inserted with the ccdB gene,
 preventing growth in all E. coli strains except DB3.1. Total amount of DNA extracted from mini
 -prep is estimated between 5 to 20 ug per vector. Restriction digests confirmed the extracted
 DNA was vectors.(Digestion of all four vectors).
 Vectors were transformed into JM109, BB#2198 (DB3.1), and BB#5777 (DB3.1). All gave expected
 results. 1 ug of each vector was digested for future use. Gel of digestion shows DNA is correct.
 (Vectors ready for insertions)

GROUP 7: Microscopy/Yeast

Summary for Microscopy/Yeast Group

 Date: Oct 27, 2008
 Status report by: Tejas
 Part no.: no Biobrick part
 Part Description: Yeast vector pRS414 to be temporarily used.
 The yeast vector pRS414 will be temporarily used until it can be adjusted to meet registry 
 standards. pRS414 contains one EcoRI site and one PstI site, both directly adjacent to each 
 other. This may make digest a little less efficient. Procedure involves first digesting with 
 Pst1 for one hour, then digesting with EcoRI overnight (sequentially, not simultaneously), as 
 EcoRI can tolerate low overhangs better than PstI, according to the NEB catalog. The following 
 is a gel run on an E/P simultaneous digest of pRS414.
 Lane one is log 2 ladder. Lane 2 is uncut pRS414 (supercoiled so runs fater). Lane 3 is cut 
 vector. It may have only one cut, with half at EcoRI and half at PstI, depending on efficiency of 
 the second cut occuring after the first.
pRS414 digest

GROUP 8: Assembly Progress

Summary of Biobrick Assemblies:

 Planned Schedule for Further Work:
October 31st- Successful transformants from either set of ligations (of Promoter + Fluorescent Protein) and transformations will be grown up for Miniprep.
November 1st- These pieces will be miniprepped and digested. Digested fragments will be ligated together with the terminator in the middle, into a pRS414 yeast/bacterial shuttle vector. Non-digested fragments of a promoter + fluorescent protein will also individually be transformed into yeast, with hopes that they will fluoresce.
November 3rd- Full construct insert will be transformed into yeast, pending identity verification.
November 6th- Pretty Yeast! (Hopefully).