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Kim, S.,Kwon, M.c.,Ryu, M.,Chung, H.,Tadi, S.,Kim, Y.,Man Kim, J.,Lee, S.,Park, J.,Kweon, G.,Ryu, S.W.,Jo, Y.,Lee, C.H.,Hatakeyama, H.,Goto, Y.i.,Yim, Y.H.,Chung, J.,Kong, Y.Y.,Shong, M. Cell Press 2012 Cell metabolism Vol.16 No.2
Although substantial progress has been made in understanding the mechanisms underlying the expression of mtDNA-encoded polypeptides, the regulatory factors involved in mitoribosome-mediated synthesis and simultaneous insertion of mitochondrial oxidative phosphorylation (OXPHOS) polypeptides into the inner membrane of mitochondria are still unclear. In the present study, disruption of the mouse Crif1 gene, which encodes a mitochondrial protein, resulted in a profound deficiency in OXPHOS caused by the disappearance of OXPHOS subunits and complexes in vivo. CRIF1 was associated with large mitoribosomal subunits that were located close to the polypeptide exit tunnel, and the elimination of CRIF1 led to both aberrant synthesis and defective insertion of mtDNA-encoded nascent OXPHOS polypeptides into the inner membrane. CRIF1 interacted with nascent OXPHOS polypeptides and molecular chaperones, e.g., Tid1. Taken together, these results suggest that CRIF1 plays a critical role in the integration of OXPHOS polypeptides into the mitochondrial membrane in mammals.
An Assistant System for Riding a Unicycle
M. Iwase,Y. Kanai,M. Kinoshita,S. Hatakeyama,Y. Kashimura,I. Hanazaki,T. Yokoyama,H. Higaki,K. Fujisawa 한국과학기술원 인간친화 복지 로봇 시스템 연구센터 2007 International Journal of Assistive Robotics and Me Vol.8 No.1
The final purpose of this study is to design a control system to assist in the skill of riding a unicycle. To realize such a system, it is necessary to make a mathematical model and to analyze the dynamics of the unicycle. It is ideal that the dynamics of a unicycle is kept as original as possible even if any automatic support control is required to assist the operator. Thus, this paper presents modeling of the unicycle and a control system design by the controlled Lagrangian to realize this type of controller.