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Activation tagging
1School of life sciences, Lanzhou University, Lanzhou, China.
Methods in Molecular Biology (Clifton, N.J.)
|May 12, 2012
Summary
Activation tagging uses enhancer elements to activate gene transcription for discovering gene function, especially for redundant genes. A new vector, pBASTA-AT2, offers improved efficiency and easier cloning for identifying T-DNA insertion sites.
Area of Science:
- Plant molecular biology
- Genetics
- Biotechnology
Background:
- Insertional mutagenesis is key for plant gene function discovery.
- Genetic redundancy often hinders loss-of-function studies.
- Activation tagging provides a gain-of-function approach for gene discovery.
Purpose of the Study:
- Introduce the pBASTA-AT2 binary vector for activation tagging.
- Highlight its advantages over existing vectors like pSKI015.
- Provide a detailed protocol for its application in gene discovery.
Main Methods:
- Generation and characterization of the pBASTA-AT2 vector.
- Comparison of transformation efficiency with pSKI015.
- Application of inverse PCR, thermal asymmetric interlaced PCR, and adaptor ligation-mediated PCR for T-DNA insertion site identification.
Main Results:
- pBASTA-AT2 demonstrates improved transformation efficiency compared to pSKI015.
- The vector facilitates easier cloning of flanking sequences due to its smaller T-DNA size and more restriction sites.
- Successful application in identifying genes involved in Brassinosteroid (BR) pathways.
Conclusions:
- pBASTA-AT2 is a valuable tool for activation tagging in plants.
- It enhances the efficiency of gene discovery, particularly for genes with functional redundancy.
- The vector and associated protocols streamline the identification of T-DNA insertion sites and flanking genes.
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