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논문 기본 정보

자료유형
학술저널
저자정보
Park, Joon-Tae (School of Biological Sciences, Seoul National University) Jeong, Young-Eui (School of Biological Sciences, Seoul National University) Ahn, Tae-In (School of Biological Sciences, Seoul National University)
저널정보
한국통합생물학회 Korean journal of biological sciences Korean journal of biological sciences 제6권 제4호
발행연도
2002.1
수록면
341 - 347 (7page)

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The life cycle of Acanthamoeba is comprised of two distinct stages, tropho-zoite and cyst. During periods of stress, trophozoites undergo cellular differentiation into cyst. In order to understand the cellular differentiation, ore followed changes in profiles of major proteins by 2D-PAGE and ubiqui-tinated proteins by immunoblotting with anti-ubiquitin (Ub) monoclonal antibody (mAb) as a probe. We observed 51 proteins present in trophozoite were lost with the encystment. We found that 43 proteins within 24 h, and 8 proteins in 96 h of encystment. Among them, 17 proteins were staine with anti-Ub mAb. In cysts, 16 proteins including 2 anti-Ub mAb-reactive proteins were newly synthesized. Four proteins were newly detected in 24 h-cyst and disappeared in 96 h-cyst, one protein was synthesized in 24-96 h-cyst and disappeared in 168 h-cyst, and 11 proteins appeared upon en-cystment and were present in all cyst stages. We identified a cyst specific 33 kDa protein as subtilisin-like serine proteinase by N-terminal sequencing. Identification of these proteins lost and newly synthesized with encystment would improve our understanding of cysting protozoan parasites.

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