Cell biosensor can be used to acquire functional information of the effect of a stimulus on a living system and detect various chemical compounds. An efficient strategy was developed here for immobilizing cells onto the gold surface by cell surface-expression of gold binding polypeptide (GBP). Additionally, core streptavidin (cSA) of Streptomyces avidinii was used as a model protein to demonstrate the effective immobilization of GBP-fusion proteins onto the gold surface. All specific binding of cells and other compounds to the gold surface were detected by surface plasmon resonance (SPR). As a series of data revealed, cells displaying GBP as well as GBP-fusion proteins bound to the gold surface stably and also, successful interaction between GBP-cSA pre-immobilized onto the gold surface and biotin-horse radish peroxidase (HRP) was observed. Mediated by GBP-fusion protein, whole cell biosensor system for biomolecular interaction studies could be obtained by effective immobilization of bioactive cells onto the gold surface without surface modification. [This work was supported by the KOSEF through the Center for Ultramicrochemical Process Systems, and by grant No. (R01-2006-000-11175-0) from the Basic Research Program of the Korea Science and Engineering Foundation.]
Shun Zheong [ Department of Chemical & Biomolecular Engineering (BK21 program) ]
Tae Jung Park [ Department of Chemical & Biomolecular Engineering (BK21 program), BioProcess Engineering Research Center and Center for Ultramicrochemical Process Systems ]
Sang Yup Lee [ Department of Chemical & Biomolecular Engineering (BK21 program), BioProcess Engineering Research Center and Center for Ultramicrochemical Process Systems Department of Biosystems and BioInformatics Research Center, Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury, Korea Advanced Institute of Science and Technology ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
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3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
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