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논문 기본 정보

자료유형
학술대회자료
저자정보
Han, Dong-Soo (School of Engineering, Information and Communications University) Seo, Jung-Min (School of Engineering, Information and Communications University) Kim, Hong-Soog (School of Engineering, Information and Communications University) Jang, Woo-Hyuk (School of Engineering, Information and Communications University)
저널정보
한국생물정보시스템생물학회 한국생물정보시스템생물학회 학술대회 한국생물정보시스템생물학회 2003년도 제2차 연례학술대회 발표논문집
발행연도
2003.1
수록면
7 - 16 (10page)

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In this paper, we propose a probabilistic framework to predict the interaction probability of proteins. The notion of domain combination and domain combination pair is newly introduced and the prediction model in the framework takes domain combination pair as a basic unit of protein interactions to overcome the limitations of the conventional domain pair based prediction systems. The framework largely consists of prediction preparation and service stages. In the prediction preparation stage, two appearance pro-bability matrices, which hold information on appearance frequencies of domain combination pairs in the interacting and non-interacting sets of protein pairs, are constructed. Based on the appearance probability matrix, a probability equation is devised. The equation maps a protein pair to a real number in the range of 0 to 1. Two distributions of interacting and non-interacting set of protein pairs are obtained using the equation. In the prediction service stage, the interaction probability of a protein pair is predicted using the distributions and the equation. The validity of the prediction model is evaluated fur the interacting set of protein pairs in Yeast organism and artificially generated non-interacting set of protein pairs. When 80% of the set of interacting protein pairs in DIP database are used as foaming set of interacting protein pairs, very high sensitivity(86%) and specificity(56%) are achieved within our framework.

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