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Full-Text Articles in Life Sciences
Dynamics In The Transient Complex Of Plastocyanin-Cytochrome F From Prochlorothrix Hollandica, Rinske Hulsker, Maria Baranova, George S. Bullerjahn, Marcellus Ubbink
Dynamics In The Transient Complex Of Plastocyanin-Cytochrome F From Prochlorothrix Hollandica, Rinske Hulsker, Maria Baranova, George S. Bullerjahn, Marcellus Ubbink
Biological Sciences Faculty Publications
The nature of transient protein complexes can range from a highly dynamic ensemble of orientations to a single well-defined state. This represents variation in the equilibrium between the encounter and final, functional state. The transient complex between plastocyanin (Pc) and cytochrome f (cyt of the cyanobacterium Prochlorothrix hollandica was characterized by NMR spectroscopy. Intermolecular pseudocontact shifts and chemical shift perturbations were used as restraints in docking calculations to determine the structure of the wild-type Pc-cytf complex. The orientation of Pc is similar to orientations found in Pc-cytf complexes from other sources. Electrostatics seems to play a modest role in complex …
Greenfall Links Groundwater To Aboveground Food Webs In Desert River Floodplains, John L. Sabo, Kevin E. Mccluney, Yevgeniy Marusenko, Andrew Keller, Candan U. Soykan
Greenfall Links Groundwater To Aboveground Food Webs In Desert River Floodplains, John L. Sabo, Kevin E. Mccluney, Yevgeniy Marusenko, Andrew Keller, Candan U. Soykan
Biological Sciences Faculty Publications
Groundwater makes up nearly 99% of unfrozen freshwater worldwide and sustains riparian trees rooted in shallow aquifers, especially in arid and semiarid climates. The goal of this paper is to root animals in the regional water cycle by quantifying the significance of groundwater to riparian animals. We focused our efforts on the cricket, Gryllus alogus: a common primary consumer found in floodplain forests along the San Pedro River, in southeast Arizona, USA. Cottonwood trees make groundwater available to G. alogus as dislodged, groundwater-laden leaves (greenfall). We hypothesized that groundwater fluxes mediated by greenfall sustain G. allogus through the prolonged dry …