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Degradation and Preservation of Organic Matter in Marine Sediments
Organic matter that is deposited in aquatic sediments is subject to an intense diagenetic reactor that determines how much organic carbon is...
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Controls on the Carbon Isotopic Compositions of Lipids in Marine Environments
Organic carbon isotopes have long been used to study modern and ancient biogeochemical processes. Controls on the isotopic composition of organic...
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Sources and Cycling of Organic Matter in the Marine Water Column
The organic carbon cycle operates on multiple time scales with a only small fraction of the global reservoir actively exchanged. For the marine...
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Atmospheric Transport of Terrestrial Organic Matter to the Sea
The transport of atmospheric particles with associated terrestrial organic matter to the oceans is an important process affecting various global...
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Biological Markers for Anoxia in the Photic Zone of the Water Column
In this chapter we review the current state of knowledge on the occurrence of anoxic conditions in the water column of past depositional systems...
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Molecular Tools for the Analysis of DNA in Marine Environments
In the last decade, microbial ecologists have increasingly applied molecular techniques to investigate microorganisms in natural environments. The...
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Lipid Markers for Marine Organic Matter
An astonishing variety of different lipids have been found in marine sediments and the water column attesting to the diversity of biosynthetic...
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Pigment Markers for Phytoplankton Production
Chlorophylls and carotenoids are commonly used as quantitative biomarkers for the composition and biomass of marine phytoplankton. This chapter...
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Isotopic Tracers of the Marine Nitrogen Cycle: Present and Past
The oceanic nitrogen cycle consists of a web of microbially mediated transformations driven in part by the large range in possible nitrogen...
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Sources and Fate of Organic Contaminants in the Marine Environment
The sources, levels, and fate of organic contaminants of major concern in the marine environment are reviewed. Spatial distributions among the...
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Structures and Efflux Mechanisms of the AcrAB-TolC Pump
The global emergence of multidrug resistance (MDR) in gram-negative bacteria has become a matter of worldwide concern. MDR in these pathogens is...
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Structure and Function of the Glycosylphosphatidylinositol Transamidase, a Transmembrane Complex Catalyzing GPI Anchoring of Proteins
Glycosylphosphatidylinositol (GPI) anchoring of proteins is a ubiquitous posttranslational modification in eukaryotic cells. GPI-anchored proteins...
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The Core Complex of Yeast COMPASS and Human Mixed-Lineage Leukemia (MLL), Structure, Function, and Recognition of the Nucleosome
Yeast COMPASS (complex of proteins associated with Set1) and human MLL (mixed-lineage leukemia) complexes are histone H3 lysine 4 methyltransferases...
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Human Transient Receptor Potential Ankyrin 1 Channel: Structure, Function, and Physiology
The transient receptor potential ion channel TRPA1 is a Ca2+-permeable nonselective cation channel widely expressed in sensory neurons, but also in...
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Structure, Dynamics and Functional Implications of the Eukaryotic Vault Complex
Vault ribonucleoprotein particles are naturally designed nanocages, widely found in the eukaryotic kingdom. Vaults consist of 78 copies of the major...
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Structures and Electron Transport Paths in the Four Families of Flavin-Based Electron Bifurcation Enzymes
Oxidoreductases facilitating electron transfer between molecules are pivotal in metabolic pathways. Flavin-based electron bifurcation (FBEB), a...
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Principles of Tomographic Reconstruction
Imagine you need to look inside a living organism. You would have only two options: using invasive techniques or applying tomography. In this...
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After the Microscope: Long-Term Care of Electron Tomography Data
Cryogenic electron tomography (cryo-ET) produces datasets tremendously rich in information, with significant value beyond their originating study....
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Automated Cryo Electron Tomography Data Collection
Electron tomography entails the three-dimensional reconstruction of an object from its projections, which are acquired using a transmission electron...