Hey-Jung PARK, Sang Kyu KIM, Kyoungsook PARK, Moonil KIM, Bong Hyun CHUNG
언어
영어(ENG)
URL
https://www.earticle.net/Article/A98640
※ 원문제공기관과의 협약기간이 종료되어 열람이 제한될 수 있습니다.
원문정보
초록
영어
Here we describe an n-type ion sensitive field effect transistor (n-type ISFET) biosensor, which is designed to directly monitor the surface charge of structurally altered maltose binding protein (MBP) upon stimulation with maltose. To our best knowledge, this study reports the first application of FET biosensor for the monitoring of conformationally changed protein. In this work, silicon dioxide (SiO2) has been used as the a material of the ISFET device, and Pt reference electrode employed for detecting the variations of surface charge in MBP. Histidine-tagged MBP was immobilized onto a NTA-Ni(II)-coated sensing layer (SiO2), subsequently treated with maltose to induce conformational changes in MBP. As a result, a significant decrease in drain current of ISFET device has been clearly observed in response to maltose, but not glucose as a control, indicating that substrate-specific conformational properties of target protein could be successfully monitored using ISFET biosensor. Collectively, our data strongly demonstrated that ISFET biosensor provides a high fidelity system for the detection of maltose-induced structural alterations in MBP by analyzing the changes in drain current based on the charge-dependent capacitance measurement.
저자
Hey-Jung PARK [ BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology ]
Sang Kyu KIM [ BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology ]
Kyoungsook PARK [ BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology ]
Moonil KIM [ BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology ]
Bong Hyun CHUNG [ BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology ]
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
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동