globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1807461115
论文题名:
Growth suppression of ice crystal basal face in the presence of a moderate ice-binding protein does not confer hyperactivity
作者: Bayer-Giraldi M.; Sazaki G.; Nagashima K.; Kipfstuhl S.; Vorontsov D.A.; Furukawa Y.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2018
卷: 115, 期:29
起始页码: 7479
结束页码: 7484
语种: 英语
英文关键词: DUF3494 ; Fragilariopsis cylindrus ; Growth rates ; Ice crystallization ; Ice-binding protein
Scopus关键词: binding protein ; ice binding protein ; unclassified drug ; algal protein ; ice ; Article ; bright field microscopy ; cell growth ; confocal laser scanning microscopy ; controlled study ; crystallization ; fluorescence microscopy ; Fragilariopsis cylindrus ; freezing ; growth inhibition ; interferometry ; melting point ; microalga ; nonhuman ; priority journal ; protein expression ; protein function ; protein localization ; thickness ; chemistry ; diatom ; freezing ; metabolism ; Algal Proteins ; Diatoms ; Freezing ; Ice ; Microalgae
英文摘要: Ice-binding proteins (IBPs) affect ice crystal growth by attaching to crystal faces. We present the effects on the growth of an ice single crystal caused by an ice-binding protein from the sea ice microalga Fragilariopsis cylindrus (fcIBP) that is characterized by the widespread domain of unknown function 3494 (DUF3494) and known to cause a moderate freezing point depression (below 1 °C). By the application of interferometry, bright-field microscopy, and fluorescence microscopy, we observed that the fcIBP attaches to the basal faces of ice crystals, thereby inhibiting their growth in the c direction and resulting in an increase in the effective supercooling with increasing fcIBP concentration. In addition, we observed that the fcIBP attaches to prism faces and inhibits their growth. In the event that the effective supercooling is small and crystals are faceted, this process causes an emergence of prism faces and suppresses crystal growth in the a direction. When the effective supercooling is large and ice crystals have developed into a dendritic shape, the suppression of prism face growth results in thinner dendrite branches, and growth in the a direction is accelerated due to enhanced latent heat dissipation. Our observations clearly indicate that the fcIBP occupies a separate position in the classification of IBPs due to the fact that it suppresses the growth of basal faces, despite its moderate freezing point depression. © 2018 National Academy of Sciences. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163687
Appears in Collections:气候变化与战略

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作者单位: Bayer-Giraldi, M., Helmholtz Centre for Polar and Marine Research, Department of Glaciology (Geosciences), Alfred Wegener Institute, Bremerhaven, 27568, Germany, Institute of Low Temperature Science, Laboratory for Phase Transition Dynamics of Ice, Hokkaido University, Sapporo, 060-0819, Japan; Sazaki, G., Institute of Low Temperature Science, Laboratory for Phase Transition Dynamics of Ice, Hokkaido University, Sapporo, 060-0819, Japan; Nagashima, K., Institute of Low Temperature Science, Laboratory for Phase Transition Dynamics of Ice, Hokkaido University, Sapporo, 060-0819, Japan; Kipfstuhl, S., Helmholtz Centre for Polar and Marine Research, Department of Glaciology (Geosciences), Alfred Wegener Institute, Bremerhaven, 27568, Germany; Vorontsov, D.A., Institute of Low Temperature Science, Laboratory for Phase Transition Dynamics of Ice, Hokkaido University, Sapporo, 060-0819, Japan, Faculty of Physics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603950, Russian Federation; Furukawa, Y., Institute of Low Temperature Science, Laboratory for Phase Transition Dynamics of Ice, Hokkaido University, Sapporo, 060-0819, Japan

Recommended Citation:
Bayer-Giraldi M.,Sazaki G.,Nagashima K.,et al. Growth suppression of ice crystal basal face in the presence of a moderate ice-binding protein does not confer hyperactivity[J]. Proceedings of the National Academy of Sciences of the United States of America,2018-01-01,115(29)
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