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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c00065
|2 doi
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|a DE-627
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|a eng
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|a Kumari, Surbhi
|e verfasserin
|4 aut
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|a Computational Study of Differences between Antifreeze Activity of Type-III Antifreeze Protein from Ocean Pout and Its Mutant
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 01.03.2021
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|a Date Revised 01.03.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The antifreeze activity of a type-III antifreeze protein (AFP) expressed in ocean pout (Zoarces americanus) is compared with that of a specific mutant (T18N) using all-atom molecular dynamics simulations. The antifreeze activity of the mutant is only 10% of the wild-type AFP. The results from this simulation study revealed the following insights into the mechanism of antifreeze action by type-III AFPs. The AFP gets adsorbed to the advancing ice front due to its hydrophobic nature. A part of the hydrophobicity is caused by the presence of clathrate structure of water molecules near the ice-binding surface (IBS). The mutation in the AFP disrupts this structure and thereby reduces the ability of the mutant to adsorb to the ice-water interface leading to the loss of antifreeze activity. The mutation, however, has no effect on the ability of the adsorbed protein to bind to the growing ice phase. Simulations also revealed that all surfaces of the protein can bind to the ice phase, although the IBS is the preferred surface
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Antifreeze Proteins
|2 NLM
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|a Fish Proteins
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Muthachikavil, Aswin V
|e verfasserin
|4 aut
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|a Tiwari, Jyoti Kumar
|e verfasserin
|4 aut
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|a Punnathanam, Sudeep N
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 36(2020), 9 vom: 10. März, Seite 2439-2448
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:36
|g year:2020
|g number:9
|g day:10
|g month:03
|g pages:2439-2448
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|u http://dx.doi.org/10.1021/acs.langmuir.0c00065
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