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Volume 1 (1976)
- Issue 4 Pages 250-
- Issue 3 Pages 166-
- Issue 2 Pages 82-
- Issue 1 Pages 1-
Volume 1, Issue 2
Displaying 1-8 of 8 articles from this issue
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Tatsuzo Fujii1976 Volume 1 Issue 2 Pages 82-92
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
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Tsutomu Nakagawa1976 Volume 1 Issue 2 Pages 93-100
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
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Saburo Harada1976 Volume 1 Issue 2 Pages 101-109
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
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[in Japanese]1976 Volume 1 Issue 2 Pages 111-124
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
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[in Japanese]1976 Volume 1 Issue 2 Pages 125-131
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
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[in Japanese]1976 Volume 1 Issue 2 Pages 132-134
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
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Kazuyuki Terayama, Yonosuke Kobatake1976 Volume 1 Issue 2 Pages 135-142
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSEffects of sugars or polyvalent cations in media on 1: 1 salts reception in slime mold Physarum poly-cephalum were investigated in terms of the threshold concentration, Cth, of salt reception. Membrane potential and motive force of tactic movement were measured by the aid of double chamber method, where salt concentration in one compartment was increased successively with a fixed concentration of a sugar or polyvalent cation species in media. Results were:
1) The presence of glucose, mannose, maltose or sucrose in media increased Cth for 1: 1 salts (Cl-and NO3-salts of Li, Na, and K), whereas ribose decreased Cth of salt reception. Galactose showed no appreciable effect on Cth for every salts examined.
2) Variation of Cth for salts in the presence of sugars were correlated with those caused by the difference in the lyotropic number of anions. Cth for Li-salts changed most both by sugars and by anions, while those for NH4-salts were not changed.
3) The presence of polyvalent cations (Ca2+, Sr2+, Mg2+, La3+, Th4+) in media led to an increase in Cth for Na-and Li-salts, whereas a decrease in Cth for K-, Rb-, and NH4-salts resulted. Cth for 1: 1 salts changed discontinuously when the concentration of polyvalent cation exceeded their respective thresholds.
4) Sequence of selectivity of univalent cations varied extensively by simultaneous receptions of 1: 1 salts with sugars or with polyvalent cations. The important roles of structural changes of membrane and the surrounding water in chemoreception were then discussed.View full abstractDownload PDF (1003K) -
Jin Sato, Eizoh Komiya, Ritsuji Yamada1976 Volume 1 Issue 2 Pages 143-146
Published: June 25, 1976
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESS1) The exocytosis mechanism of catecholamine from pig adrenal medulla was molecular biologically examined using immunological techniques.
2) Catecholamine-storing vesicles membrane was prepared from pig adrenal medulla by the sucrose density gradient method (0.3-2.0 M) and the freeze and thawing method. The chromomembrin B was purified from the vesicles membrane. The vesicles or the membrane was treated by antisera againsst chromomembrin B and DOPA. And then, catecholamine combined to chromomembrin B was determined.
3) The binding affinity of chromomembrin B to catecholamine was activated by antisera. These results suggested that the chromomembrin B is catecholamine carrier protein in the membrane of catecholamine-storing vesicles.
4) The secretion mechanism of catecholamine is discussed.View full abstractDownload PDF (530K)
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