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- Popok, Vladimir, 1966
(författare)
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Energetic cluster-surface collisions
- 2010
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Ingår i: Handbook of nanophysics, Vol. 2 Clusters and Fullerenes (edited by Klaus D. Sattler). - New York : Taylor&Francis. - 9781420075557
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 3. |
- Taube, Fabian, 1967
(författare)
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Assessment of mercury speciation in contaminated soils prior to remediation
- 2010
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Ingår i: Solid Waste Management and Environmental Remediation. - Hauppauge NY, USA : Nova Science Publishers. - 9781607417613
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- In a recent study, the type and amount of mercury species present in a soil from a former industrial area of a chlor-alkali plant were investigated, with the purpose of studying chemical effects from thermal treatment of the soil at different temperatures. The findings presented in the study shows the need for accurate assessment of the speciation of mercury in the soil, before considering remediation. From this particular study it can be questioned what particular type of remediation method that should be used in soils low on soil organic matter , but more importantly, it can be questioned whether there is an actual need for remediation of the soil or not. The conclusion to be drawn from the study was that in soils low on soil organic matter, the formation of inorganic salts might play a major role for the mercury speciation, and probably also for the bioaccumulation of mercury in nearby lakes and river sediments. In soils with no or little natural organic matter, it therefore seems reasonable to assume that the bioaccessibility and bioaccumulation of mercury will be very limited. The study opens up the question whether soil remediation is reasonable, from an environmental and an economical perspective, in this particular case, and in similar cases, where mercury is tightly bound as mercury salts.
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| 5. |
- Grantham, Julie, 1972
(författare)
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The Eukaryotic Chaperonin CCT (TRiC): Structure, Mechanisms of Action and Substrate Diversity
- 2010
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Ingår i: Handbook of Molecular Chaperones. Roles, Structures and Mechanisms. Editors: Piero Durante and Leandro Colucci. - New York : Nova Science Publishers, Inc. - 9781608763665 ; , s. 377-392
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The chaperonin containing TCP-1 (CCT) is found in the cytosol of all eukaryotic cells. It is an oligomer formed from two back to back rings, each containing eight subunits that surround a central cavity. Each CCT subunit contains three domains: an equatorial domain containing an ATP binding site, a substrate binding domain which displays the least sequence similarity between other CCT subunits and a linker domain. The folding cycle of CCT is ATP driven and the subunits of each chaperonin ring hydrolyse ATP in a sequential manner. For actin and tubulin it has been demonstrated that these proteins initially bind to CCT in an open conformation. Following the nucleotide cycle of CCT they become compact whilst remaining bound to one or more chaperonin subunits. This is in contrast to the mechanism of the prokaryotic chaperonins for which it is thought that folding substrates are encapsulated within the chaperonin cavity without direct interactions with chaperonin subunits. The sequence diversity of the CCT substrate binding domains provides a complex binding interface for potential substrates. The major folding substrates of CCT are the abundant cytoskeletal proteins actin and tubulin, whilst other less abundant proteins such as the cell cycle regulating proteins Cdc20 and Cdh1 are known to require interactions with CCT to reach their native state. The numbers of CCT substrate proteins and the way in which CCT binds to its substrates is a matter for debate. At present it is estimated that in yeast up to 300 proteins may bind to CCT but it is not yet known how many proteins are obligate substrates. There are two major theories regarding how CCT recognises its folding substrates. The first proposes that CCT is a relatively general chaperone, recognising hydrophobic binding determinants, whilst the second, at least in the case of actin, proposes that binding to CCT is sequence specific. The mechanisms of CCT action and the diversity of potential CCT substrates will be discussed in relation to the activity of CCT having far reaching implications on the many cellular functions that depend on the activity of its folding substrates.
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| 6. |
- Kvarnemo, Charlotta, 1963
(författare)
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Parental care
- 2010
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Ingår i: Evolutionary Behavioral Ecology / edited by David F. Westneat, Charles W. Fox.. - New York : Oxford University Press. - 9780195331936
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Lindgren, Ingvar, 1931, et al.
(författare)
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Coupled clusters and quantum electrodynamics
- 2010
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Ingår i: "Recent Progress in Coupled-Cluster Theory", edited by Petr Cársky, Josef Paldus and Jiri Pittner. - : Springer. - 9789048128846 ; , s. 357-374
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 8. |
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| 9. |
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| 10. |
- Rosen, Barry P, et al.
(författare)
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Arsenic transport in prokaryotes and eukaryotic microbes.
- 2010
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Ingår i: MIPs and Their Roles in the Exchange of Metalloids, Jahn, Thomas P.; Bienert, Gerd P. (Eds.). - : Landes Bioscience and Springer. - 9781441963147 ; , s. 47-55
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Aquaporins (AQPs) and aquaglyceroporins facilitate transport of a broad spectrum of substrates such as water, glycerol and other small uncharged solutes. More recently, AQPs ave also been shown to facilitate diffusion of metalloids such as arsenic (As) and antimony (Sb). At neutral pH, the trivalent forms of these metalloids are structurally similar to glycerol and hence they can enter cells through AQPs. As- and Sb-containing compounds are toxic to cells, yet both metalloids are used as chemotherapeutic agents for treating acute promyelocytic leukemia and diseases caused by protozoan parasites. In this chapter, we will review the role of AQPs and other proteins in metalloid transport in prokaryotes and eukaryotic microbes.
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