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Literature DB >> 417076

Improved preparation and cooperative calcium contraction of glycerinated Vorticella.

H Asai, T Ochiai, K Fukui, M Watanabe, F Kano.

Abstract

An improved method for the preparation of glycerinated Vorticella convallaria was investigated. The pretreatment of living vorticellas with a medium containing 0.1% saponins and subsequent treatment with an extraction medium containing 35% glycerol at about 0 degrees C was satisfactory. The equilibrium average length of contractile stalks of glycerinated vorticellas was measured at various free calcium concentrations in the reaction medium. It was found that the contractile element in the spasmoneme of the stalk is contracted by a cooperative interaction involving at least two calcium ions.

Entities: Chemical Species

Mesh：

Substances：
Glycerol
Calcium

Year: 1978 PMID： 417076 DOI： 10.1093/oxfordjournals.jbchem.a131974

Source DB: PubMed Journal: J Biochem ISSN： 0021-924X Impact factor: 3.387

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Cited

6 in total

1. Power-limited contraction dynamics of Vorticella convallaria: an ultrafast biological spring.

Authors: A Upadhyaya; M Baraban; J Wong; P Matsudaira; A van Oudenaarden; L Mahadevan
Journal: Biophys J Date: 2007-10-12 Impact factor: 4.033

2. Rubber-like elasticity and volume changes in the isolated spasmoneme of giant Zoothamnium sp. under Ca2+-induced contraction.

Authors: Y Moriyama; H Okamoto; H Asai
Journal: Biophys J Date: 1999-02 Impact factor: 4.033

6. Microtubule stabilizer reveals requirement of Ca²⁺-dependent conformational changes of microtubules for rapid coiling of haptonema in haptophyte algae.

Authors: Mami Nomura; Kohei Atsuji; Keiko Hirose; Kogiku Shiba; Ryuji Yanase; Takeshi Nakayama; Ken-Ichiro Ishida; Kazuo Inaba
Journal: Biol Open Date: 2019-02-11 Impact factor: 2.422

6 in total

Improved preparation and cooperative calcium contraction of glycerinated Vorticella.

1. Power-limited contraction dynamics of Vorticella convallaria: an ultrafast biological spring.

2. Rubber-like elasticity and volume changes in the isolated spasmoneme of giant Zoothamnium sp. under Ca2+-induced contraction.

3. Spasmin-like proteins in various ciliates revealed by antibody to purified spasmins of Carchesium polypinum.

4. High-speed video cinematographic demonstration of stalk and zooid contraction of Vorticella convallaria.

5. Mechanics of Vorticella contraction.

6. Microtubule stabilizer reveals requirement of Ca²⁺-dependent conformational changes of microtubules for rapid coiling of haptonema in haptophyte algae.

Improved preparation and cooperative calcium contraction of glycerinated Vorticella.

1. Power-limited contraction dynamics of Vorticella convallaria: an ultrafast biological spring.

2. Rubber-like elasticity and volume changes in the isolated spasmoneme of giant Zoothamnium sp. under Ca2+-induced contraction.

3. Spasmin-like proteins in various ciliates revealed by antibody to purified spasmins of Carchesium polypinum.

4. High-speed video cinematographic demonstration of stalk and zooid contraction of Vorticella convallaria.

5. Mechanics of Vorticella contraction.

6. Microtubule stabilizer reveals requirement of Ca2+-dependent conformational changes of microtubules for rapid coiling of haptonema in haptophyte algae.

6. Microtubule stabilizer reveals requirement of Ca²⁺-dependent conformational changes of microtubules for rapid coiling of haptonema in haptophyte algae.