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Suzuki M, Ueno T, Iizuka R, Miura T, Zako T, Akahori R, Miyake T, Shimamoto N, Aoki M, Tanii T, Ohdomari I, Funatsu T. Effect of the C-terminal truncation on the functional cycle of chaperonin GroEL: implication that the C-terminal region facilitates the transition from the folding-arrested to the folding-competent state. J Biol Chem 2008; 283:23931-9. [PMID: 18583344 PMCID: PMC3259756 DOI: 10.1074/jbc.m804090200] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2008] [Revised: 06/25/2008] [Indexed: 11/06/2022] Open
Abstract
To elucidate the exact role of the C-terminal region of GroEL in its functional cycle, the C-terminal 20-amino acid truncated mutant of GroEL was constructed. The steady-state ATPase rate and duration of GroES binding showed that the functional cycle of the truncated GroEL is extended by approximately 2 s in comparison with that of the wild type, without interfering with the basic functions of GroEL. We have proposed a model for the functional cycle of GroEL, which consists of two rate-limiting steps of approximately 3- and approximately 5-s duration (Ueno, T., Taguchi, H., Tadakuma, H., Yoshida, M., and Funatsu, T. (2004) Mol. Cell 14, 423-434 g). According to the model, detailed kinetic studies were performed. We found that a 20-residue truncation of the C terminus extends the time until inorganic phosphate is generated and the time for arresting protein folding in the central cavity, i.e. the lifetime of the first rate-limiting step in the functional cycle, to an approximately 5-s duration. These results suggest that the integrity of the C-terminal region facilitates the transition from the first to the second rate-limiting state.
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Affiliation(s)
- Mihoko Suzuki
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Taro Ueno
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ryo Iizuka
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takahiro Miura
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tamotsu Zako
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Rena Akahori
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takeo Miyake
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Naonobu Shimamoto
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Mutsuko Aoki
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takashi Tanii
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Iwao Ohdomari
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takashi Funatsu
- Graduate School of
Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, the Faculty of
Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo
169-8555, the Bioengineering
Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, the
Nanotechnology Research Center, Waseda
University, 513 Tsurumaki-chou, Shinjuku-ku, Tokyo 162-0041, and the
Center for NanoBio Integration, The
University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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