Coding
NorR

Part:BBa_K256004:Design

Designed by: iGEM09_NTU-Singapore   Group: iGEM09_NTU-Singapore   (2009-10-16)

NorR


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal AgeI site found at 655
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal SapI.rc site found at 430


Design Notes

-- Primer synthesis

  • Using NCBI’s reference sequence NC_000913.2 and E.coli (strain: K-12; substrain: MG1655) as search organism, the DNA sequence for NorR was obtained. The 1515 bp NorR resides at genome position 2828797 – 2830311, and the sequence is as follows:


ATGAGTTTTTCCGTTGATGTGCTGGCGAATATCGCCATCGAATTGCAGCGTGGGATTGGTCACCAGGATC GTTTTCAGCGCCTGATCACCACGCTACGTCAGGTGCTGGAGTGCGATGCGTCTGCGTTGCTACGTTACGA TTCGCGGCAGTTTATTCCGCTTGCCATCGACGGTCTGGCAAAGGATGTACTCGGTAGACGCTTTGCGCTG GAAGGGCATCCACGGCTGGAAGCGATTGCCCGCGCCGGGGATGTGGTGCGCTTTCCCGCAGACAGCGAAT TGCCCGATCCCTATGACGGTTTGATTCCTGGGCAGGAGAGTCTGAAGGTTCACGCCTGCGTTGGTCTGCC ATTGTTTGCCGGGCAAAACCTGATCGGCGCACTGACGCTCGACGGGATGCAGCCCGATCAGTTCGATGTT TTCAGCGACGAAGAGCTACGGCTGATTGCTGCGCTGGCGGCGGGAGCGTTAAGCAATGCGTTGCTGATTG AACAACTGGAAAGCCAGAATATGCTGCCAGGCGATGCCACGCCGTTTGAAGCGGTGAAACAGACGCAGAT GATTGGCTTGTCCCCTGGCATGACGCAACTGAAAAAAGAGATTGAGATTGTGGCGGCGTCCGATCTCAAC GTCCTGATCAGCGGTGAGACTGGAACCGGTAAGGAGCTGGTGGCGAAAGCGATTCATGAAGCCTCGCCAC GGGCGGTGAATCCGCTGGTCTATCTCAACTGTGCTGCACTGCCGGAAAGTGTGGCGGAAAGTGAGTTGTT CGGGCATGTGAAAGGAGCGTTTACTGGCGCTATCAGTAATCGCAGCGGGAAGTTTGAAATGGCGGATAAC GGCACGCTGTTTCTGGATGAGATCGGCGAGTTGTCGTTGGCATTGCAGGCCAAGCTGCTGAGGGTGTTGC AGTATGGCGATATTCAGCGCGTTGGCGATGACCGTTGTTTGCGGGTCGATGTGCGCGTGCTGGCGGCGAC TAACCGCGATTTACGCGAAGAGGTGCTGGCAGGGCGATTCCGCGCCGATTTGTTTCATCGCCTGAGCGTG TTTCCACTTTCGGTGCCGCCGCTGCGTGAGCGGGGCGATGATGTCATTCTGCTGGCGGGGTATTTCTGCG AGCAGTGTCGTTTGCGGCAGGGGCTCTCCCGCGTGGTATTAAGTGCCGGAGCGCGAAATTTACTGCAACA CTACAGTTTTCCGGGAAACGTGCGCGAACTGGAACATGCTATTCATCGGGCGGTAGTTCTGGCGAGAGCC ACCCGCAGCGGCGATGAAGTGATTCTTGAGGCGCAACATTTTGCTTTTCCTGAGGTGACGTTGCCGACGC CAGAAGTGGCGGCGGTGCCCGTTGTTAAGCAAAACCTGCGTGAAGCGACAGAAGCGTTCCAGCGTGAAAC TATTCGTCAGGCACTGGCACAAAATCATCACAACTGGGCTGCCTGCGCGCGGATGCTGGAAACCGACGTC GCCAACCTGCATCGGCTGGCGAAACGTCTGGGATTGAAGGATTAA


  • To ensure that the endogenous NorR sequence can be directly converted into a biobrick part without any modification, the sequence was checked with Webcutter 2.0 (http://rna.lundberg.gu.se/cutter2/) for any presence of EcoRI / NotI / XbaI / SpeI / PstI restriction sites. Since none of these restriction sites was found in the endogenouse NorR genome, direct PCR extraction can be performed. PCR primers were designed using NCBI’s PrimerBlast.


  • The primer sequences for NorR Extraction :
    • Forward Primer (27 bases): 5’-TTAATCCTTCAATCCCAGACGTTTCGC-3’
    • Reverse Primer (26 bases):5’- ATGAGTTTTTCCGTTGATGTGCTGGC-3’


  • Since NorR sequence is on the anti-sense strand of E.coli genome, the biobrick prefix has to be added to the reverse primer, rather than forward primer, and vice-versa.


  • The primer sequences for Biobrick conversion :
    • Addition of Preffix to Reverse primer – Forward Primer (50 bases) : 5’-GTT TCT TCG AAT TCG CGG CCG CTT CTA GAG ATGAGTTTTTCCGTTGATGT-3’
    • Addition of Suffix to Forward primer – Reverse Primer (50 bases) : 5’-GTT TCT TCC TGC AGC GGC CGC TAC TAG TA TTAATCCTTCAATCCCAGACG-3’


The oligonucleotides were synthesized by one of our team’s sponsor, 1st Base Holdings, Singapore.

Source

-- NCBI’s reference sequence NC_000913.2.

The 1515 bp NorR resides at genome position 2828797 – 2830311

Organism: Escherichia coli K12

Risk group: Risk group 1

References

https://2020.igem.org/Safety/Risk_Groups