Results 51 to 60 of about 2,979,995 (245)

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Development of a Bioaerosol single particle detector (BIO IN) for the Fast Ice Nucleus CHamber FINCH [PDF]

, 2010
In this work we present the setup and first tests of our new BIO IN detector. This detector was constructed to classify atmospheric ice nuclei (IN) for their biological content. It is designed to be coupled to the Fast Ice Nucleus CHamber FINCH.
U. Bundke, B. Nillius, Bundke, Ulrich, H. Bingemer, Jaenicke, Ruprecht, Reimann, Bernd, B. Reimann, R. Jaenicke, Bingemer, Heinz, Nillius, Bjorn   +9 more
core   +2 more sources

Cover ICE 2019

, 2019
These proceedings are a collection of papers presented in English at The Second PGSD UST International Conference on Education (ICE) held in Universitas Sarjanawiyata Tamansiswa on October 5, 2019.
ICE 2019, ICE 2019
core   +1 more source

A landscape-isotopic approach to the geochemical characterization of lakes in the Kangerlussuaq region, west Greenland

Arctic, Antarctic, and Alpine Research, 2018
In west Greenland, an approximate chronosequence of landscape evolution and weathering exists between the coast, which has been ice free for long periods, and more recently deglaciated areas along the present day ice margin.
Emily Henkemans, Shaun K. Frape, Timo Ruskeeniemi, Nicholas John Anderson, Monique Hobbs   +4 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Response of Antarctic sea-ice algae to an experimental decrease in pH: a preliminary analysis from chlorophyll fluorescence imaging of melting ice

Polar Research, 2018
Microorganisms confined to annual sea ice in the Southern Ocean are exposed to highly variable oxygen and carbonate chemistry dynamics because of the seasonal increase in biomass and limited exchange with the underlying water column.
Katerina Castrisios, Andrew Martin, Marius N. Müller, Fraser Kennedy, Andrew McMinn, Ken G. Ryan   +5 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Atmospheric impact of the 1783-1784 Laki eruption: Part I Chemistry modelling. [PDF]

, 2003
Results from the first chemistry-transport model study of the impact of the 1783–1784 Laki fissure eruption (Iceland: 64°N, 17°W) upon atmospheric composition are presented.
Stevenson, D. S.; id_orcid, Stevenson, D. S., D. S. Stevenson, Derwent, R. G., Highwood, E.J., W. J. Collins, C. E. Johnson, V. Gauci, Johnson, C.E., Derwent, R.G., E. J. Highwood, Highwood, E. J., Collins, W. J., Stevenson, D.S., R. G. Derwent, Johnson, C. E., Collins, W.J., Gauci, V.   +17 more
core   +2 more sources

First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact [PDF]

Atmospheric Chemistry and Physics, 2007
Reactive halogens are responsible for boundary-layer ozone depletion and mercury deposition in Polar Regions during springtime. To investigate the source of reactive halogens in the air arriving at Barrow, Alaska, we measured BrO, an indicator of ...
W. R. Simpson, D. Carlson, G. Hönninger, G. Hönninger, G. Hönninger, T. A. Douglas, M. Sturm, D. Perovich, U. Platt   +8 more
doaj  

Modeling the Sources and Chemistry of Polar Tropospheric Halogens (Cl, Br, and I) Using the CAM‐Chem Global Chemistry‐Climate Model

Journal of Advances in Modeling Earth Systems, 2019
Current chemistry climate models do not include polar emissions and chemistry of halogens. This work presents the first implementation of an interactive polar module into the very short‐lived (VSL) halogen version of the Community Atmosphere Model with ...
Rafael P. Fernandez, Antía Carmona‐Balea, Carlos A. Cuevas, Javier A. Barrera, Douglas E. Kinnison, Jean‐Francois Lamarque, Christopher Blaszczak‐Boxe, Kitae Kim, Wonyong Choi, Timothy Hay, Anne‐Marlene Blechschmidt, Anja Schönhardt, John P. Burrows, Alfonso Saiz‐Lopez   +13 more
doaj   +1 more source