Proceedings of the Korean Biophysical Society Conference (한국생물물리학회:학술대회논문집)
- 2003.06a
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- Pages.67-67
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- 2003
The fluctuation and the rigidity study of F-actin filaments in a confined space
- Park, Myung-Chul (Department of Physics, KAIST(Korea Advanced Institute of Science and Technology), MRL(Materials Research Laboratory) & Materials department & Physics department, University of California at Santa Barbara) ;
- Youli Li (MRL(Materials Research Laboratory) & Materials department & Physics department, University of California at Santa Barbara) ;
- Cyrus R. Safinya (MRL(Materials Research Laboratory) & Materials department & Physics department, University of California at Santa Barbara) ;
- Kim, Mahn-Won (Department of Physics, KAIST(Korea Advanced Institute of Science and Technology), MRL(Materials Research Laboratory) & Materials department & Physics department University of California at Santa Barbara)
- Published : 2003.06.01
Abstract
Filamentous actin (F-actin) is a two stranded long helix that performs structural function in eukaryotic cells. F-actin had been assembled from Alexa-labeled G-actin and had been confined in microchannel. The fluctuation of single filaments was observed by fluorescence optical microscopy. We measured Tangent-tangent Correlation Function G(s) (where s is the distance along the contour of the chain), which tells us the confining wall effect of wormlike semi-flexible polymers as well as the flexural rigidity, such as persistence length.
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