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NTIS 바로가기생명과학회지 = Journal of life science, v.24 no.2 = no.166, 2014년, pp.209 - 217
이한님 (부산대학교 생명과학과) , 정태준 (부산대학교 생명과학과)
In a variety of eukaryotic cells, autophagy sequesters a portion of the cytoplasm and targets it to a lytic compartment for degradation in bulk. Autophagy is a dynamic process for degrading cytoplasmic cargoes with various degrees of selectivity, and its activity is tightly regulated in a nutrient- ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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자식작용의 특징은 무엇인가? | 다양한 진핵세포에서 자식작용은 세포질 일부를 격리시켜 분해 구획으로 수송하여 대량 분해시킨다. 자식작용은 역동적인 분해 경로이며, 수송하고자 하는 세포질에 대해 다양한 선택성을 갖고 있고, 그 활성의 조절은 영양상태와 발생 단계에 의존적이다. 최근 자식작용 연구가 많은 관심을 받고 있는데, 이는 자식작용이 흥미로운 세포학적 현상이기 때문이기도 하지만, 자식작용이 가지는 의학적, 농학적 응용 가능성 때문이기도 하다. | |
자식작용이 가지는 의학적, 농학적 응용 가능성에는 무엇이 있는가? | 최근 자식작용 연구가 많은 관심을 받고 있는데, 이는 자식작용이 흥미로운 세포학적 현상이기 때문이기도 하지만, 자식작용이 가지는 의학적, 농학적 응용 가능성 때문이기도 하다. 이를 테면, 자식작용은 암이나 퇴행성 신경질환과 연관성이 있으며 식물의 잎 노화 중에 일어나는 영양분의 재이동에도 관여하는 것으로 보인다. 본 리뷰에서는 효모, 동물 및 식물에서 보존된 핵심적 자식작용 장치의 유전학적 성분을 기술한 후, 이들 성분이 식물 자식작용의 각 단계에 필요한지 간단히 설명할 것이다. | |
대표적인 단백질의 분해과정에는 어떤 것이 있는가? | 일반적으로 특정한 단백질의 양은 합성 단계뿐 아니라 수송 및 분해에 의해서도 조절될 수 있다. 단백질의 분해를 담당하는 과정으로 잘 알려진 것은 유비퀴틴-프로테아좀 시스템(ubiquitin-proteasome system, 이하 UPS로 약칭함)과 자식작용(autophagy)이 있다[32]. UPS에 의해 분해되는 단백질은 먼저 다른 단백질과의 상호작용에 의해 인식된 후 유비퀴틴화되어 결국 프로테아좀에 의해 분해된다. |
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