Seibutsu Butsuri
Online ISSN : 1347-4219
Print ISSN : 0582-4052
ISSN-L : 0582-4052
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Volume 49, Issue 1
Issue 281
Displaying 1-18 of 18 articles from this issue
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Perspective
Overview
  • An Overview on Natively Unfolded Proteins
    Ken NISHIKAWA
    2009 Volume 49 Issue 1 Pages 004-010
    Published: 2009
    Released on J-STAGE: January 25, 2009
    DOIhttps://doi.org/10.2142/biophys.49.004
    JOURNAL FREE ACCESS
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    Proteins with wholly or partly denatured structure in vivo are called intrinsically disordered or natively unfolded proteins (NUPs). Functional importance of NUPs has been revealed by NMR studies as first reviewed by P. Wright in 1999. Since then, computational analyses on NUPs have also been intensively carried out to predict that about one third of eukaryotic proteins are occupied by NUPs. I will start my overview with a question why it was historically so late to find out NUPs as one of important subjects of protein science, and then move on to several issues such as, whether NUPs are really specific to eukaryotes or not, what means a particularly higher fraction of NUPs existing in the cell nucleus, what is the evolutionary implications of NUPs and so on. The contents will be described from rather a personal point of view.
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Review
  • Microorganism Tracking Microscope Using High-Speed Vision System
    Hiromasa OKU, Naoko OGAWA, Masatoshi ISHIKAWA
    2009 Volume 49 Issue 1 Pages 011-014
    Published: 2009
    Released on J-STAGE: January 25, 2009
    DOIhttps://doi.org/10.2142/biophys.49.011
    JOURNAL FREE ACCESS
    Supplementary material
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    This paper describes a noble microscope system that can track a swimming microorganism in the center of view field using high-speed visual feedback. The target specimen was tracked by moving its container by a computer controlled XYZ-stage. Target position was extracted from images captured at 1000 fps by a high-speed vision system mounted on the microscope.
    In this paper, the reason why such high-speed visual feedback is essential for the visual tracking function is discussed. Successful tracking of a freely swimming paramecium and a spermatozoa demonstrated validity of the tracking microscope.
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Topics
Topics—Young Scientist Series
Theoretical and experimental techniques
Activity of Regional Branch
Young Voice
Letters from Abroad
Promenade along Protein 3D Structures
Technical term
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