Publications by authors named "Bao-Quan Guan"

Article Synopsis
  • Research is advancing fluorescent proteins, focusing on developing brighter and diverse colored monomeric forms for better optical marking.
  • A new variant, GFPxm, initially had limited use due to its low-temperature fluorescence; however, 12 mutant versions were created to enhance this property, with 7 showing strong fluorescence at higher temperatures.
  • Some of the mutants outperformed the widely used EGFP in fluorescence intensity and could be expressed in mammalian cell lines, with various excitation peaks and a notable red shift in fluorescence spectra observed among several mutants.
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Recently, we have reported a new gfp gene isolated from Aequorea macrodactyla. The protein purified from expressed E. coli exhibited an excitation peak at 476 nm and an emission peak at 496 nm.

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Aim: To improve the immunogenicity of receptor binding site of hepatitis B virus (HBV) on preS1 antigen using HBV core antigen as an immuno-carrier.

Methods: One to 6 tandem copies of HBV preS1 (21-47) fragment were inserted into HBcAg at the sites of aa 78 and 82, and expressed in E.coli.

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Aim: To express the fusion protein of enhanced green fluorescent protein (EGFP) with the light chain variable domain of the neutralizing monoclonal antibody MA18/7 (mAb) against hepatitis B virus in E.coli, and determine its bioactivity.

Methods: The EGFP gene was cloned into vector pTO-T7 to construct an expression vector.

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