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Full-Text Articles in Life Sciences
A Plasmid-Encoded Surface Protein Found In Chronic-Disease Isolates Of Coxiella Burnetti, Michael F. Minnick, Robert A. Heinzin, Dennis K. Reschke, Marvin Eugene Frazier, Louis P. Mallavia
A Plasmid-Encoded Surface Protein Found In Chronic-Disease Isolates Of Coxiella Burnetti, Michael F. Minnick, Robert A. Heinzin, Dennis K. Reschke, Marvin Eugene Frazier, Louis P. Mallavia
Biological Sciences Faculty Publications
The cbbE' gene codes for the E' protein of Coxiella burnetii and was detected in genomic DNA from all known human isolates of the biotzere strain but not in DNA from the other five strains of C. burnetti. The biotzere strain is strictly associated with chronic disease in humans. Extrinsic iodination of biotzere strain cells radiolabeled a 55-kDa protein which comigrated on sodium dodecyl sulfate-polyacrylamide gel electrophoresis with the E' protein synthesized in vitro from recombinants containing the cbbE' gene. The 125I-labeled 55-kDa protein was immunoprecipitated with polyclonal anti-E' antiserum, confirming its identity as E'. Predicted secondary structure of the …
Bird Populations In Logged And Unlogged Western Larch/Douglas-Fir Forest In Northwestern Montana, Bret W. Tobalske, Richard L. Hutto, Raymond C. Shearer
Bird Populations In Logged And Unlogged Western Larch/Douglas-Fir Forest In Northwestern Montana, Bret W. Tobalske, Richard L. Hutto, Raymond C. Shearer
Biological Sciences Faculty Publications
Of 32 species of abundant breeding birds, populations of 10 species differed significantly between small cutting units and adjacent uncut forest. Foliage foragers and tree gleaners were less abundant in cutting units, while flycatching species and ground foragers were more common there. Of nesting guilds, conifer tree nesters were least abundant in cutting units, and ground nesters were more common there. Results suggest that bird management should consider diverse community-level habitat needs and that if maintenance of tree-dependent species is important, broadleaf trees and snags of all species should be retained.
Life-History Correlates Of Taxonomic Diversity, John M. Marzluff, Kenneth P. Dial
Life-History Correlates Of Taxonomic Diversity, John M. Marzluff, Kenneth P. Dial
Biological Sciences Faculty Publications
One of the most pervasive, nonrandom evolutionary patterns is extreme domination of a taxon by one subtaxon or only a few subtaxa. Domination refers to taxonomic diversity and the fraction of the taxon that is classified in the most diverse subtaxon. We attempt to explain how subtaxa come to dominate their phyletic counterparts by examining correlations between taxonomic diversity and life history traits such as age of first reproduction, longevity, fecundity and partitioning of reproduction, and resource availability in a variety of vertebrate, invertebrate, and plant groups. Regardless of taxonomic group or rank, the number of taxa within an assemblage, …
Three-Dimensional Structure Of Human Basic Fibroblast Growth Factor, A Structural Homolog Of Interleukin 1Β, Jiandong Zhang, Lawrence S. Cousens, Phillip J. Barr, Stephen R. Sprang
Three-Dimensional Structure Of Human Basic Fibroblast Growth Factor, A Structural Homolog Of Interleukin 1Β, Jiandong Zhang, Lawrence S. Cousens, Phillip J. Barr, Stephen R. Sprang
Biological Sciences Faculty Publications
The three-dimensional structure of the 146-residue form of human basic fibroblast growth factor (bFGF), expressed as a recombinant protein in yeast, has been determined by x-ray crystallography to a resolution of 1.8 Å. bFGF is composed entirely of β-sheet structure, comprising a three-fold repeat of a four-stranded antiparallel β-meander. The topology of bFGF is identical to that of interleukin 1β, showing that although the two proteins share only 10% sequence identity, bFGF, interleukin 1, and their homologs comprise a family of structurally related mitogenic factors. Analysis of the three-dimensional structure in light of functional studies of bFGF suggests that the …
Identification Of Adaptive Changes In An Evolving Population Of Escherichia Coli: The Role Of Changes With Regulatory And Highly Pleiotropic Effects, A. Kurlandzka, Frank Rosenzweig, J. Adams
Identification Of Adaptive Changes In An Evolving Population Of Escherichia Coli: The Role Of Changes With Regulatory And Highly Pleiotropic Effects, A. Kurlandzka, Frank Rosenzweig, J. Adams
Biological Sciences Faculty Publications
A population of Escherichia coli initiated with a single clone developed extensive morphological and physiological polymorphism after being maintained for 773 generations in glucose-limited continuous culture. To understand the mechanisms of adaptation to this environment, total protein patterns of four adaptive clones and of the parent strains were examined by two-dimensional gel electrophoresis. Approximately 20% of the proteins (approximately 160 in absolute numbers) showed significantly different levels of expression in pairwise comparisons of parent and adapted clones. The extent of these changes points to the importance of mutations with regulatory and/or highly pleiotropic effects in the adaptive process. The four …
Intracellular Ph Decreases During Entry Into Estivation In The Land Snail Oreohelix, Bernard Rees
Intracellular Ph Decreases During Entry Into Estivation In The Land Snail Oreohelix, Bernard Rees
Biological Sciences Faculty Publications
No abstract provided.
Shrimp Stocking, Salmon Collapse, And Eagle Displacement, Craig N. Spencer, B. Riley Mcclelland, Jack Arthur Stanford
Shrimp Stocking, Salmon Collapse, And Eagle Displacement, Craig N. Spencer, B. Riley Mcclelland, Jack Arthur Stanford
Biological Sciences Faculty Publications
No abstract provided.
Seasonal Phytoplankton Assemblages Associated With The Chesapeake Bay Plume, Harold G. Marshall
Seasonal Phytoplankton Assemblages Associated With The Chesapeake Bay Plume, Harold G. Marshall
Biological Sciences Faculty Publications
Waters associated with the Chesapeake Bay plume were highly variable, unstable, and subject to the influence of flow patterns into and out of the Bay. Seasonal phytoplankton assemblages were identified for this region, with the phytoplankton development similar to the seasonal spring-fall growth maxima over the shelf, yet influenced by the multi-pulsed patterns often noted in the lower Bay. Major dominants included species common to both the shelf and lower Chesapeake Bay.