期刊
JOURNAL OF STRUCTURAL BIOLOGY
卷 139, 期 1, 页码 39-45出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S1047-8477(02)00503-8
关键词
coccolith; calcite; Golgi; polysaccharide; galacturonomannan
The coccolithophores are valuable models for the design and synthesis of composite materials, because the cellular machinery controlling the nucleation, growth, and patterning of their calcitic scales (coccoliths) can be examined genetically. The coccoliths are formed within the Golgi complex and are the major CaCO3 component in limestone sediments-particularly those of the Cretaceous period. In this study, we describe mutants lacking a sulfated galacturonomannan and show that this polysaccharide in conjunction with the Golgi-derived membrane is directly linked to the growth and shaping of coccolith calcite but not to the initial orientated nucleation of the mineral phase. (C) 2002 Elsevier Science (USA). All rights reserved.
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