Coding

Part:BBa_K2148001

Designed by: Ciara McCarthy   Group: iGEM16_Cambridge-JIC   (2016-08-12)
Revision as of 16:26, 13 October 2016 by Mie (Talk | contribs)


aadA

A commonly used antibiotic for Chlamydomonas chloroplasts. Confers resistance to spectinomycin and streptomycin.


Usage and Biology

The aadA gene confers antibiotic resistance to Spectinomycin and Streptomycin and is functional in both chloroplasts and E. coli.

This part can be used with other level 0 Phytobrick to create a transcriptional unit to provide a selection pressure on transformations.

Previous experience with this antibiotic marker in Saul Purton's lab recommends the psaA promoter, which is a strong promoter. However, when constructing level 2 composite parts, it is advisable to use the psaA promoter for the gene of interest and place aadA under atpA promoter which is weaker.

Verification

Part verified in E. coli ligated into Paul Surton's (UCL) pASap1 backbone. These transformed bacteria grow on both ampicilin (backbone antibioti) and spectinomycin (albeit slowly). Picture below indicates growth on Spec plates (before plating on amplicilin plates to verify double resistance).

(PUT VERIFIED PHOTO HERE)


Sequence

Sequencing data obtained from Biosource sequencing ATTTNACGTAGTGGACAAATTCTTCCNACTGATCTGCGCGCGAGGCCAAGCGATCTTCTTCTTGTCCAAGATAAGCCTGTCTAGC TTCAAGTATGACGGGCTGATACTGGGCCGGCAGGCGCTCCATTGCCCAGTCGGCAGCGACATCCTTCGGCGCGATTTTGCCGGTT ACTGCGCTGTACCAAATGCGGGACAACGTAAGCACTACATTTCGCTCATCGCCAGCCCAGTCGGGCGGCGAGTTCCATAGCGTTA AGGTTTCATTTAGCGCCTCAAATAGATCCTGTTCAGGAACCGGATCAAAGAGTTCCTCCGCCGCTGGACCTACCAAGGCAACGCT ATGTTCTCTTGCTTTTGTCAGCAAGATAGCCAGATCAATGTCGATCGTGGCTGGCTCGAAGATACCTGCAAGAATGTCATTGCGC TGCCATTCTCCAAATTGCAGTTCGCGCTTANCTGGATAACGCCACGGAATGATGTCGTCGTGCACAACAATGGTGACTTCTACAG CGCGGAGAATCTCGCTCTCTCCAGGGGAAGCCGAAGTTTCCAAAANGTCGTTGATCAAAGCTCGCCGCGTTGTTTCATCAAGCCT TANGTCACCGTAACCAGCAGATCAATATCACTGTGTGGCTTCNNCCGCCATCCACTGCGGAGCCGTACAAATGTACGGCCAGCAA CGTCNTTCGAGATGGCGCTCGATGACGCCAACTACCTCTGATANTTGAGTTGANACTTCGGCGATACCGCTTCACGANCCATTCG AGACCACTCNTCGCTNCTAAANANNGGCCNCAATTCCNNNNNTCNNNNNNNCCNAANGCTAAGGATTTTNTTAATCTGAAATTCN NGCCTNNNGATACNCTAATTTTANAGGTAATGNCANNNNNANNNNNCNNNNANN


Sequence and Features


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 NgoMIV site found at 652
  • 1000
    COMPATIBLE WITH RFC[1000]


References

Goldschimdt-Clermont, M.: Transgenic expression of aminoglycoside adenine transferase in the chloroplast: a selectable marker of site-directed transformation of chlamydomonas. Nucleic Acids Res. 1991 Aug 11; 19(15): 4083–4089. Online at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC328544/

References

Goldschmidt-Clermont M. Transgenic expression of aminoglycoside adenine transferase in the chloroplast: a selectable marker of site-directed transformation of chlamydomonas. Nucleic Acids Research. 1991;19(15):4083-4089.

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