Difference between revisions of "Part:BBa K2541400"
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<h1>'''Biology and Usage'''</h1> | <h1>'''Biology and Usage'''</h1> | ||
Green fluorescent protein (GFP) offers efficient ways of visualizing promoter activity and protein localization in vivo, and many different variants are currently available to study bacterial cell biology. It exhibits intrinsic fluorescence and is commonly used as a reporter gene in intact cells and organisms [1]. Many mutants of the protein with either modified spectral properties, increased fluorescence intensity, or improved folding properties have been reported [2]. | Green fluorescent protein (GFP) offers efficient ways of visualizing promoter activity and protein localization in vivo, and many different variants are currently available to study bacterial cell biology. It exhibits intrinsic fluorescence and is commonly used as a reporter gene in intact cells and organisms [1]. Many mutants of the protein with either modified spectral properties, increased fluorescence intensity, or improved folding properties have been reported [2]. | ||
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GFP often misfold when expressed as fusions with other proteins, while a robustly folded version of GFP, called superfolder GFP, was developed and described by Pédelacq et al at 2006 [3]that folds well even when fused to poorly folded polypeptides. Furthermore, sfGFP might be particularly suitable for gene expression studies, since the emergence of fluorescence closely matches induction of transcription. The superfolder GFP had been registered in iGEM BBa_I746916. Its codon usage is a compromise for optimum expression in E. coli and B. subtilis. There is another superfolder GFP designed by Overkamp W et al at 2013[4], which is codon optimized for S. pneumoniae. It was be used in Escherichia coli by Segall-Shapiro T H et al at 2018[5]. | GFP often misfold when expressed as fusions with other proteins, while a robustly folded version of GFP, called superfolder GFP, was developed and described by Pédelacq et al at 2006 [3]that folds well even when fused to poorly folded polypeptides. Furthermore, sfGFP might be particularly suitable for gene expression studies, since the emergence of fluorescence closely matches induction of transcription. The superfolder GFP had been registered in iGEM BBa_I746916. Its codon usage is a compromise for optimum expression in E. coli and B. subtilis. There is another superfolder GFP designed by Overkamp W et al at 2013[4], which is codon optimized for S. pneumoniae. It was be used in Escherichia coli by Segall-Shapiro T H et al at 2018[5]. | ||
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This year our team registered the superfolder GFP designed by Overkamp W et al with a BBa_K2541400 (called sfGFP). Compared to superfolder GFP(BBa_I746916), sfGFP (BBa_K2541400) is BbsI restriction site free, so it can be used in goldengate assembly to achieve efficient and rapid assembly of gene fragments. And sfGFP (BBa_K2541400) has x fold increased fluorescence intensity than superfolder GFP(BBa_I746916). | This year our team registered the superfolder GFP designed by Overkamp W et al with a BBa_K2541400 (called sfGFP). Compared to superfolder GFP(BBa_I746916), sfGFP (BBa_K2541400) is BbsI restriction site free, so it can be used in goldengate assembly to achieve efficient and rapid assembly of gene fragments. And sfGFP (BBa_K2541400) has x fold increased fluorescence intensity than superfolder GFP(BBa_I746916). | ||
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The new variant sfGFP (K2541400) was contributed to the Registry of Standard Biological Parts and it will be more widely used in the synthetic biology community. | The new variant sfGFP (K2541400) was contributed to the Registry of Standard Biological Parts and it will be more widely used in the synthetic biology community. | ||
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<span class='h3bb'>Sequence and Features</span> | <span class='h3bb'>Sequence and Features</span> | ||
Revision as of 03:07, 10 October 2018
sfGFP_optimism
It is a superfolder GFP, a robustly folded version of GFP, which is BbsI restriction site free and can be used in goldengate assembly.
Biology and Usage
Green fluorescent protein (GFP) offers efficient ways of visualizing promoter activity and protein localization in vivo, and many different variants are currently available to study bacterial cell biology. It exhibits intrinsic fluorescence and is commonly used as a reporter gene in intact cells and organisms [1]. Many mutants of the protein with either modified spectral properties, increased fluorescence intensity, or improved folding properties have been reported [2].
GFP often misfold when expressed as fusions with other proteins, while a robustly folded version of GFP, called superfolder GFP, was developed and described by Pédelacq et al at 2006 [3]that folds well even when fused to poorly folded polypeptides. Furthermore, sfGFP might be particularly suitable for gene expression studies, since the emergence of fluorescence closely matches induction of transcription. The superfolder GFP had been registered in iGEM BBa_I746916. Its codon usage is a compromise for optimum expression in E. coli and B. subtilis. There is another superfolder GFP designed by Overkamp W et al at 2013[4], which is codon optimized for S. pneumoniae. It was be used in Escherichia coli by Segall-Shapiro T H et al at 2018[5].
This year our team registered the superfolder GFP designed by Overkamp W et al with a BBa_K2541400 (called sfGFP). Compared to superfolder GFP(BBa_I746916), sfGFP (BBa_K2541400) is BbsI restriction site free, so it can be used in goldengate assembly to achieve efficient and rapid assembly of gene fragments. And sfGFP (BBa_K2541400) has x fold increased fluorescence intensity than superfolder GFP(BBa_I746916).
Characterization
The improved sfGFP (K2541400) variant was standardised into BioBrick format and its fluorescence intensity was compared with superfolder GFP(BBa_I746916) .Its x fold increased fluorescence intensity is a very useful feature. And it is BbsI restriction site free, so it can be used in goldengate assembly to achieve efficient and rapid assembly of gene fragments.
The new variant sfGFP (K2541400) was contributed to the Registry of Standard Biological Parts and it will be more widely used in the synthetic biology community.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21INCOMPATIBLE WITH RFC[21]Illegal XhoI site found at 421
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]