Characteristics of an ultra-small biomotor

Nobunori Kami-ike; Seishi Kudo; Yukio Magariyama; Shin ichi Aizawa; Hirokazu Hotani

Characteristics of an ultra-small biomotor

Nobunori Kami-ike, Seishi Kudo, Yukio Magariyama, Shin ichi Aizawa, Hirokazu Hotani

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Bacterial cells possess ultra-small motors on their surfaces with which to rotate their flagellar filaments. The motor utilizes the electrochemical energy stored in the proton gradient across the cytoplasmic membrane, and can rotate at more than 200 r.p.s without a load. It can rotate in both clockwise and counterclockwise directions and switch the rotational direction in 1 msec. Its rotator is made of about 10 kinds of proteins and is about 30 nm in diameter. To analyze the motor function in detail, the authors have developed a laser dark-field microscopy technique by which high-speed rotation of a single flagellum can be measured. They have also succeeded in controlling the rotation speed by applying an external electric pulse to a bacterial cell that is held at the tip of a micropipette.

Original language	English
Title of host publication	Proceedings. IEEE Micro Electro Mechanical Systems
Publisher	Publ by IEEE
Pages	245-246
Number of pages	2
ISBN (Print)	0879426411
Publication status	Published - 1991
Externally published	Yes
Event	Proceedings of the 1991 IEEE Micro Electro Mechanical Systems - MEMS '91 - Nara, Jpn Duration: 1991 Jan 30 → 1991 Feb 2

Publication series

Name	Proceedings. IEEE Micro Electro Mechanical Systems

Other

Other	Proceedings of the 1991 IEEE Micro Electro Mechanical Systems - MEMS '91
City	Nara, Jpn
Period	91/1/30 → 91/2/2

ASJC Scopus subject areas

Control and Systems Engineering
Mechanical Engineering
Electrical and Electronic Engineering

Cite this

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title = "Characteristics of an ultra-small biomotor",

abstract = "Bacterial cells possess ultra-small motors on their surfaces with which to rotate their flagellar filaments. The motor utilizes the electrochemical energy stored in the proton gradient across the cytoplasmic membrane, and can rotate at more than 200 r.p.s without a load. It can rotate in both clockwise and counterclockwise directions and switch the rotational direction in 1 msec. Its rotator is made of about 10 kinds of proteins and is about 30 nm in diameter. To analyze the motor function in detail, the authors have developed a laser dark-field microscopy technique by which high-speed rotation of a single flagellum can be measured. They have also succeeded in controlling the rotation speed by applying an external electric pulse to a bacterial cell that is held at the tip of a micropipette.",

author = "Nobunori Kami-ike and Seishi Kudo and Yukio Magariyama and Aizawa, {Shin ichi} and Hirokazu Hotani",

year = "1991",

language = "English",

isbn = "0879426411",

series = "Proceedings. IEEE Micro Electro Mechanical Systems",

publisher = "Publ by IEEE",

pages = "245--246",

booktitle = "Proceedings. IEEE Micro Electro Mechanical Systems",

note = "Proceedings of the 1991 IEEE Micro Electro Mechanical Systems - MEMS '91 ; Conference date: 30-01-1991 Through 02-02-1991",

}

TY - GEN

T1 - Characteristics of an ultra-small biomotor

AU - Kami-ike, Nobunori

AU - Kudo, Seishi

AU - Magariyama, Yukio

AU - Aizawa, Shin ichi

AU - Hotani, Hirokazu

PY - 1991

Y1 - 1991

N2 - Bacterial cells possess ultra-small motors on their surfaces with which to rotate their flagellar filaments. The motor utilizes the electrochemical energy stored in the proton gradient across the cytoplasmic membrane, and can rotate at more than 200 r.p.s without a load. It can rotate in both clockwise and counterclockwise directions and switch the rotational direction in 1 msec. Its rotator is made of about 10 kinds of proteins and is about 30 nm in diameter. To analyze the motor function in detail, the authors have developed a laser dark-field microscopy technique by which high-speed rotation of a single flagellum can be measured. They have also succeeded in controlling the rotation speed by applying an external electric pulse to a bacterial cell that is held at the tip of a micropipette.

AB - Bacterial cells possess ultra-small motors on their surfaces with which to rotate their flagellar filaments. The motor utilizes the electrochemical energy stored in the proton gradient across the cytoplasmic membrane, and can rotate at more than 200 r.p.s without a load. It can rotate in both clockwise and counterclockwise directions and switch the rotational direction in 1 msec. Its rotator is made of about 10 kinds of proteins and is about 30 nm in diameter. To analyze the motor function in detail, the authors have developed a laser dark-field microscopy technique by which high-speed rotation of a single flagellum can be measured. They have also succeeded in controlling the rotation speed by applying an external electric pulse to a bacterial cell that is held at the tip of a micropipette.

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M3 - Conference contribution

AN - SCOPUS:0025757630

SN - 0879426411

T3 - Proceedings. IEEE Micro Electro Mechanical Systems

SP - 245

EP - 246

BT - Proceedings. IEEE Micro Electro Mechanical Systems

PB - Publ by IEEE

T2 - Proceedings of the 1991 IEEE Micro Electro Mechanical Systems - MEMS '91

Y2 - 30 January 1991 through 2 February 1991

ER -

Characteristics of an ultra-small biomotor

Abstract

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