Daily Notebook

From 2008.igem.org

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==[['''Brainstorming''']]==
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==[[Brainstorming]]==

Revision as of 16:28, 24 June 2008


Home The Team The Project Parts Submitted to the Registry Modeling Notebook

Contents

Brainstorming

JUN 10

File:System diagram pic.jpg

JUN 16

Summary of individual tasks to research:

  1. S. Mutans metabolism pathway-Asad
  2. L. bulgaricus metabolism pathway-Allin
  3. secretion (full or partial)-John
  4. other secretion systems (introduction of)-Sara
  5. T7 as a promoter (L. bulgaricus)-Prarthna
  6. L. bulgaricus transformation/protocols-Derek
  7. binding assay protocols-Andrew

Linear Sequence/Design

Ex-promoter-RBS-ATG-signal-epitope-p1025-linker (TEV cleavage site)-GFP-His-TAATAA-termination-SP (see top of page)

  • Base pairs: 35-10-3-90-30-60-45-700-15-6-8
  • potential eptiopes
    • FLAG (Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys)
    • C-myc (E Q K L I S E E D L)
    • HA (Y P Y D U P D Y A: #2)

DNA/Plasmid Editor

  • http://www.biology.utah.edu/jorgensen/wayned/ape/

Peptide Sequence Manipulations

  • http://slam.bs.jhmi.edu/gd/

Primer Analyzer Tool (check temperature & GC content)

  • http://www.idtdna.com/analyzer/Applications/OligoAnalyzer/Default.aspx
  1. primers should be 17-28 bases in length;
  2. base composition should be 50-60% (G+C);
  3. primers should end (3') in a G or C, or CG or GC: this prevents "breathing" of ends and increases efficiency of priming;
  4. Tms between 55-80oC are preferred;
  5. 3'-ends of primers should not be complementary (ie. base pair), as otherwise primer dimers will be synthesised preferentially to any other product;
  6. primer self-complementarity (ability to form 2o structures such as hairpins) should be avoided;
  7. runs of three or more Cs or Gs at the 3'-ends of primers may promote mispriming at G or C-rich sequences (because of stability of annealing), and should be avoided.
    • http://bioweb.uwlax.edu/GenWeb/Molecular/Seq_Anal/Primer_Design/primer_design.htm

Parts/Construction

  1. Construction
    1. GFP
    2. Synthetic peptide
    3. L. bulgaricus vector
  2. Assay
  3. L. bulgaricus
  4. S. Mutans

To Do/To Buy:

  • finalize DNA sequence
  • primer
  • synthesis
  • reagents

TEV Protease cut site

  • Amino Acid Sequence : Glu-Asn-Leu-Tyr-Phe-Gln-Gly (Cuts between Gln-Gly)
  • Base Pair Sequence: GAAAACCTGTACTTCCAGGGT


JUN 17

Links to sites from individual research topics

  • T7 as a promoter in L. bulgaricus/Other viable promoter options
    • LacS promoter
      • http://www.patentstorm.us/patents/5639644/description.html
      • http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=161534
    • http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=123959
    • http://jb.asm.org/cgi/content/full/184/4/928
  • Secretion signal peptide
    • [http://www.pubmedcentral.nih.gov/picrender.fcgi?artid=178052&blobtype=pdf cleavage site]

P4 Revised

File:P4-4.jpg

    • reverse sequence: CTG CAG CGG CCG CTA CTA GTA AGA GAA TAT AAA AAG CCA GAT TAT TAA TCC GGC TTT TTT ATT ATT TTT ATT AGT GGT GAT GGT GAT GAT GTT TGT ATA GTT CAT CCA TGC
    • length = 111 bp
    • melting temp = 69.6 C
    • GC content % = 36.0

JUN 18

  • [[../lbulgaricus |Lactobacillus delbrueckii subsp. bulgaricus Information & Protocols]]
  • [[../toothbindingassay | Tooth binding assay protocol]]


Home The Team The Project Parts Submitted to the Registry Modeling Notebook
  • http://www.freewebs.com/naguiar/ (S. mutans Information)
  • http://pubs.acs.org/cgi-bin/abstract.cgi/jafcau/2002/50/i05/abs/jf010958t.html (S. mutans adsorption to HA Beads)
  • http://www.blackwell-synergy.com/doi/full/10.1111/j.1399-302X.2007.00412.x (Influence of Starch and Sucrose on S. mutans)

Friday Meeting breakdown

  1. Andrew: primers
  2. Derek: L. bulgaricus procedures
  3. Allin: metabolism
  4. John: binding assay
  5. Sara: secretion
  6. Asad: S. Mutans/Binding Assay
  7. Prarthna: promoters
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