1998年12月
Molecular imaging of Halocynthia papillosa cellulose
JOURNAL OF STRUCTURAL BIOLOGY
- ,
- ,
- ,
- 巻
- 124
- 号
- 1
- 開始ページ
- 42
- 終了ページ
- 50
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1006/jsbi.1998.4045
- 出版者・発行元
- ACADEMIC PRESS INC
The molecular organization of cellulose I-beta microfibrils in the tunic of Halocynthia papillosa was analyzed by high-resolution cryoelectron microscopy on ultrathin cross sections of artificially highly oriented microfibrils. The arrangement of cellulose chains intersected by the 0.6-, 0.53-, and 0.39-nm equatorial lattice planes was clearly imaged over the whole area of a parallelogram shaped cross section of a microfibril. One edge of the parallelogram was parallel to the 0.6-nm lattice plane, while the other did not correspond to a crystallographic plane. Such organization is distinct from previous findings on algal cellulose I-alpha-rich microfibrils, which have an almost square cross section bounded by both 0.6- and 0.53-nm crystallographic planes. A tentative model for microfibril formation is proposed by introducing a two-step biocrystallization mechanism: the formation of molecular sheets spaced by 0.53 nm between adjacent molecules, followed by self-deposition of these sheets by hydrogen bonding between them. (C) 1998 Academic Press.
- リンク情報
- ID情報
-
- DOI : 10.1006/jsbi.1998.4045
- ISSN : 1047-8477
- Web of Science ID : WOS:000078672800003