Biomedical subjects

Koichiro Matsuno

Publications and source records attributed to Koichiro Matsuno.

4 recordsLinked to original sources

PubMed2003

Enhancement of the sliding velocity of actin filaments in the presence of ATP analogue: AMP-PNP.

The sliding velocity of actin filaments was found to increase in the presence of ATP analogues. At 0.5 mM ATP, the presence of 2.0 mM of AMP-PNP enhanced the filament velocity from 3.2 up to 4.5 microm/s. However, 2 mM ADP decreased the velocity down to 1.1 microm/s. The results suggest that the complex conformations of myosin cross-bridges interacting with an actin filament in the presence of ATP analogues makes the entire filament move faster.

Actin Cytoskeleton↗

PubMed2002

Microdynamic context and macrodynamic data in biological systems.

Dynamics without boundary conditions has been attempted to address an extreme subtlety of what looks like boundary conditions or constraints appeared in the biological realm. Microdynamic context accessible in first- and second-person descriptions in the present progressive tense can precipitate the robust macrodynamic data, that are retroactively couched upon the standard dynamics supplemented by specific boundary conditions framed in third-person descriptions in the present tense. Addressing dynamics in first- and second-person descriptions grounds itself upon the process of measurement internal to any material bodies. Internal measurement comes to provide a material means for naturalizing both consciousness and attentive awareness.

Animals↗

PubMed2002

Prebiotic oligomerization on or inside lipid vesicles in hydrothermal environments.

Oligomerization of amino acids proceeded on or inside lipid vesicles as a model of prebiotic cells in a simulated hydrothermal environment. When the suspension of lipid vesicles taking up monomeric glycine underwent a sudden temperature drop by traversing from a hot (180 degrees C) to a cold (0 degree C) region repeatedly while circulating through a closed reaction circuit, oligopeptides up to heptaglycine were formed even in the absence of condensing agents.

Amino Acids↗

PubMedDate not supplied

Quantum mechanics in first, second and third person descriptions.

Although quantum mechanics in third person descriptions is certainly legitimate insofar as one is sure about what each energy quantum is all about, quantum mechanics in first person descriptions comes to the surface once one raises the issue of how each quantum transforms itself as measuring and interacting with the others of the similar nature. Each energy quantum is taken as the robust confinement of interactions, whose first person descriptions address the quantum involved in the process of measuring other quanta internally. In addition, the issue of how the robust confinement of interactions could come into being and develop is a matter of quantum mechanics in second person descriptions. Biological activities including cell motility and muscle contraction address the issue of quantum coherence accessible in quantum mechanics in second person descriptions.

Narration↗