AcGFP1 Vector Set

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A set of three vectors encoding green fluorescent protein from Aequorea coerulescens. pAcGFP1 is a prokaryotic expression vector that also serves as a convenient source of fluorescent protein cDNA. In this vector, the full-length human-codon-optimized cDNA is flanked by distinct MCSs to facilitate excision from the vector and insertion into other eukaryotic or prokaryotic expression constructs. The other vectors, pAcGFP1-C1 and pAcGFP1-N1, are designed for studies in mammalian systems. These vectors allow expression of a protein of interest as a C- or N-terminal fusion, respectively. The fusion vectors can also be used as cotransfection markers since the unmodified vectors will express fluorescent protein. All of the fluorescent protein coding sequences in these constructs have been human-codon-optimized for efficient expression in mammalian cells.

Use of AcGFP1 for fusions and fluorescence microscopy applications

Use of AcGFP1 for fusions and fluorescence microscopy applications

Use of AcGFP1 for fusions and fluorescence microscopy applications. Panels A and B. Activation of Protein Kinase C alpha was monitored with Living Colors AcGFP1. Panel A. HEK 293 cells were stably transfected with a plasmid encoding AcGFP1 fused to PKC alpha. Panel B. Cells were induced with 1.5 µg/ml PMA for 3 min. The PKC alpha-AcGFP1 fusion moves from the cytosol to the plasma membrane, a result consistent with the known mobilization pattern of PKC alpha. Panel C. HeLa cells were transiently transfected with pAcGFP1-Actin and visualized by fluorescence microscopy.

AcGFP1 is a monomeric protein

AcGFP1 is a monomeric protein

AcGFP1 is a monomeric protein. Panel A. Recombinant AcGFP1 protein was analyzed by FPLC gel filtration chromatography. Overall protein absorbance (A280) and chromophore excitation (A477) of the eluted material were monitored simultaneously. AcGFP1 elutes from the column at a retention time corresponding to a molecular weight of 24 kDa. The calculated molecular weight of AcGFP1 is 26.9 kDa. Panel B. Recombinant AcGFP1 protein was analyzed by sucrose density ultracentrifugation using a continuous gradient. Panel C. Pseudonative gel analysis of proteins. The oligomeric structure of proteins is preserved during SDS-PAGE analysis if samples are kept at 4°C and not boiled prior to loading on a gel. Boiled and unboiled recombinant proteins (7.5 μg) were separated by SDS-PAGE electrophoresis (12 acrylamide). In both the boiled (denatured) and unboiled (nondenatured) samples, AcGFP1 runs as a uniform band of ~30 kDa due to its monomeric structure. The unboiled (nondenatured) DsRed-Express runs at a much higher molecular weight than its denatured (boiled) counterpart due to its oligomeric structure.

Basic fluorescent protein vector map

Basic fluorescent protein vector map

Basic fluorescent protein vector map. Use this bacterial expression vector as a source of the fluorescent protein gene. Note: There is a stop codon at the 5′ end of the 3′ MCS. The 3′ MCS should not be used for cloning.

Fluorescence excitation and emission spectra of DsRed-Monomer and AcGFP1

Fluorescence excitation and emission spectra of DsRed-Monomer and AcGFP1

Fluorescence excitation and emission spectra of DsRed-Monomer and AcGFP1.