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軟体動物タツナミガイ体壁縦走筋ダイアッド接合部の構造解析
http://hdl.handle.net/10487/1445
http://hdl.handle.net/10487/144569b5f0c9-72fc-47f9-af0d-5b20e07bbe08
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SJKU Vol 17 21-30.pdf (2.4 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-02-23 | |||||
| タイトル | ||||||
| タイトル | 軟体動物タツナミガイ体壁縦走筋ダイアッド接合部の構造解析 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | longitudinal body wall muscle (LBWM) of Dolabella auricularia | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | structural analysis of yiadic contacts | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | foot | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | calsequestrin | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | fractional SR volume | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 著者 |
木南, 雅暁
× 木南, 雅暁× Kinami, Masaaki× 鈴木, 季直× Suzuki, Suechika |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The ultrastructure of dyads in the longitudinal body wall muscle (LBWM) of a mollusc Dolabella auricularia was studied to elucidate electro-mechano coupling in the dyadic contacts of somatic smooth muscles, and to make clear the morphological homology with the triadic contacts of skeletal muscles. In LBWM fibers, the sarcoplasmic reticulum (SR) in vesicular forms was mostly located underneath the plasma membrane, and constructed dyads, not only along the fiber surface but also around the tubular invaginations (Sugi and Suzuki, 1978)^<1)> which resemble the transverse tubule of skeletal muscles in shape. In the junctional gap of dyads, electron-dense foot-like structures were arrayed at regular intervals. In dyads found along the fiber surface, the diameter of the foot-like structures was 18.3nm, the center-to-center distance was 30.5nm, and the junctional gap was 9.7nm. While, in triads found around the tubular invaginations, those dimensions were 18.6nm, 30.4nm and 9.6nm, respectively. No significant difference was found between the respective dimensions of the two types of dyads, indicating that they are fundamentally the same in construction. On the other hand, the measured dimensions of dyadic contacts coincided well with those of the triadic contacts of skeletal muscles. Furthermore, as found in skeletal muscle triads, a two-dimensional orthogonal array of foot-like structures on the SR junctional membrane was also confirmed by observing serial sections 35nm thick. These results indicate that the foot-like structures are truly feet, and the dyadic contacts of LBWM fibers are homologous in structure and possibly in function with the triadic contacts of skeletal muscles. This view was further supported by these experiments, proving the existence of calsequestrin in SR demonstrated by immunoelectron microscopy and the high quantity (3.02%) of fractional SR volume per fiber volume measured by the montage method. | |||||
| 書誌情報 |
Science Journal of Kanagawa University 巻 17, p. 21-30, 発行日 2006-05-25 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1880-0483 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12068302 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| その他の言語のタイトル | ||||||
| その他のタイトル | Structural Analysis of Dyadic Contacts in the Longitudinal Body Wall Muscle of a Mollusc Dolabella auricularia | |||||
| 出版者 | ||||||
| 出版者 | 神奈川大学 | |||||
