Earticle

초록

영어

Antifreeze proteins (AFP) are proteins that depress the freezing point but not the melting point of aqueous solution by inhibiting the growth of ice crystals. This phenomenon is described as thermal hysteresis (TH), a difference between the freezing point and melting points and provides organisms in subzero environments with one of cold adaptation mechanisms. Ice recrystallization (IR), a process of forming a larger grain of ice in expense of smaller ones is also hampered by AFP. IR inhibition is another characteristic of AFP. The ice-controlling characteristics make AFPs a potential biomedical, food, agricultural and industrial appications. TH activity, or antifreeze activity was investigated using nanolitre osmometer from various organisms such as bacteria, fungi, insects, and coastal fish from East Sea. Of these, arctic yeast, arctic insects and coastal fish showed moderate antifreeze activity. All had antifreeze activity as well as IR inhibition activity. To further characterize AFP, we isolated arctic yeast AFP using ice-affinity chromatography. Here we present the functional and structural characterization of arctic yeast AFP.

저자

• Hak Jun KIM [ Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 406-840, Korea. Department of Polar Sciences, University of Science and Technology, Incheon 406-840, Korea. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576