Seibutsu Butsuri
Online ISSN : 1347-4219
Print ISSN : 0582-4052
ISSN-L : 0582-4052
Search
Advanced search
OR
Browse
Search
Volume 49, Issue 4
Issue 284
Displaying 1-19 of 19 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
Perspective
Overview
  • Sophisticated Ultrasonic Radar System Adopted by Flying Bats
    Hiroshi RIQUIMAROUX
    2009 Volume 49 Issue 4 Pages 174-180
    Published: 2009
    Released on J-STAGE: July 25, 2009
    DOIhttps://doi.org/10.2142/biophys.49.174
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Small bats (microchiroptera) get various types of information about their targeted objects by comparing returning echoes to emitted ultrasonic pulses, which is called “Biosonar”. This paper introduces the outline of biosonar, and then explains consistency and plasticity of vocalization, changes in vocalization due to relationships between targets and the bat. This paper also describes how they vocalize for the real-time time-sharing signal processing based upon data obtained with an onboard telemetry microphone system and data recorded with reversible focal inactivation of neural activities. Amazing real-time time-sharing signal processing performed by a brain as small as the tip of our little finger will be explained.
    View full abstract
    Download PDF (1398K)
  • How to Measure Diffusion Coefficient of Biomolecules in Living Cells
    Takeharu NAGAI, Tomoki MATSUDA
    2009 Volume 49 Issue 4 Pages 181-186
    Published: 2009
    Released on J-STAGE: July 25, 2009
    DOIhttps://doi.org/10.2142/biophys.49.181
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    It is quite important to understand behavior of biomolecules in terms of the diffusion coefficient inside live cells since the diffusion speed of biomolecules sometimes affects the result of chemical reactions with downstream target molecules. Here, we introduce several technologies to measure diffusion coefficient of biomolecules in living cells, and discuss about biological meaning of diffusion measurement analysis.
    View full abstract
    Download PDF (1392K)
Review
  • Single-Molecule Kinetics of Cell Signaling Reactions
    Yasushi SAKO
    2009 Volume 49 Issue 4 Pages 187-191
    Published: 2009
    Released on J-STAGE: July 25, 2009
    DOIhttps://doi.org/10.2142/biophys.49.187
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Recent progress in single molecule imaging techniques has made it possible to visualize individual protein molecules at work even in living cells. Using this technique, we can analyze kinetics of molecular reactions both in living cells and reconstitution systems. Here, introducing two reactions carried out by epidermal growth factor receptor (EGFR), we show examples of single-molecule kinetic analysis. Single-molecule kinetic analysis allows us to obtain reaction parameters in complicated living organisms. Also, it is revealing complex reaction behavior of proteins both in vitro and in vivo.
    View full abstract
    Download PDF (880K)
Topics
Theoretical and experimental techniques
Tips and Hints
Activity of Regional Branch
Young Voice
Letters from Abroad
Promenade along Protein 3D Structures
Technical term
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top