The Department of Biological Sciences at the University of Montana engages with the study of living systems, revealing the fundamental principles that govern the complexity of cells and system ecology. Research and creative scholarship by the faculty of the Department includes studies into conserving rare species; signal transduction; protein trafficking; immunology; cellular lifespan; genetics of behavior; molecular mechanisms of diseases; ecology and evolution; functional morphology; and evolutionary genomics.

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Submissions from 2000

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The Advantages of Clonal Integration Under Different Ecological Conditions: a Community-Wide Test, Steven C. Pennings and Ragan M. Callaway

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A Biochemical Mechanism for Nonrandom Mutations and Evolution, Barbara E. Wright

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Structure of a rat α1-macroglobulin receptor-binding domain dimer, Tsan Xiao, Dianne L. Decamp, and Stephen R. Sprang

Submissions from 1999

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Development of a System for Genetic Manipulation of Bartonella Bacilliformis, James M. Battisti and Michael F. Minnick

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Biological-Control Herbivores May Increase Competitive Ability of the Noxious Weed Centaurea Maculosa, Ragan M. Callaway, Thomas H. DeLuca, and Wendy M. Belliveau

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Structure of G(iα1)·GppNHp, autoinhibition in a Gα protein-substrate complex, David E. Coleman and Stephen R. Sprang

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Molecular Evidence for a New Bacteriophage of Borrelia Burgdorferi, Christian H. Eggers and D. Scott Samuels

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Systematic changes in gene expression patterns following adaptive evolution in yeast, Tracy L. Ferea, David Botstein, Patrick O. Brown, and R. Frank Rosenzweig

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Toward an Evolutionary Understanding of Song Diversity in Oscines, Erick Greene

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Habitat Relationships of Landbirds in the Northern Region, USDA Forest Service, Richard L. Hutto and Jock S. Young

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Mycorrhizae Indirectly Enhance Competitive Effects of an Invasive Forb on a Native Bunchgrass, Marilyn J. Marler, Catherine A. Zabinski, and Ragan M. Callaway

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Bush Lupine Mortality, Altered Resource Availability, and Alternative Vegetaion States, John L. Maron and Robert L. Jefferies

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Positions in the 30S Ribosomal Subunit Proximal to the 790 Loop as Determined by Phenanthroline Cleavage, Gregory W. Muth, Scott P. Hennelly, and Walter E. Hill

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Cleavage of a 23S rRNA Pseudoknot by Phenanthroline-Cu(II), G. W. Muth, Charles M. Thompson, and Walter E. Hill

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Two-metal-ion catalysis in adenylyl cyclase, John J.G. Tesmer, Roger K. Sunahara, Roger A. Johnson, Gilles Gosselin, Alfred G. Gilman, and Stephen R. Sprang

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Using Atlas Data to Model the Distribution of Woodpecker Species in the Jura, France, Claudine Tobalske and Bret W. Tobalske

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Three-dimensional structure of a complex between the death domains of pelle and tube, Tsan Xiao, Par Towb, Steven A. Wasserman, and Stephen R. Sprang

Submissions from 1998

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Effective Recovery of Bacterial DNA and Percent-Guanine-Plus-Cytosine-Based Analysis of Community Structure in the Gastrointestinal Tract of Broiler Chickens, Juha H. A. Apajalahti, Laura K. Särkilahti, Brita R. E. Mäki, J. Pekka Heikkinen, Päivi H. Nurminen, and William E. Holben

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Mutations in Bartonella Bacilliformis gyrB Confer Resistance to Coumermycin A(1), James M. Battisti, Laura A. Smitherman, D. Scott Samuels, and Michael F. Minnick

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Multiple duplications of yeast hexose transport genes in response to selection in a glucose-limited environment, Celeste J. Brown, Kristy M. Todd, and R. Frank Rosenzweig

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Increased Photosynthesis Offsets Costs of Allocation to Sapwood in An Arid Environment, Eileen V. Carey, Ragan M. Callaway, and Evan H. DeLucia

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Identification of a G(iα) binding site on type V adenylyl cyclase, Carmen W. Dessauer, John J.G. Tesmer, Stephen R. Sprang, and Alfred G. Gilman

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Bowen Ratio Estimates of Evapotranspiration for Tamarix Ramosissima Stands on the Virgin River in Southern Nevada, D. A. Devitt, Anna Sala, S. D. Smith, J. Cleverly, L. K. Shaulis, and R. Hammett

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Continued Utilization of CCR5 Coreceptor by a Newly Derived T-Cell Line-Adapted Isolate of Human Immunodeficiency Virus Type 1, Kathryn E. Follis, Meg Trahey, Rachel A. LaCasse, and Jack H. Nunberg

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Population Genetics and Pattern of Larval Dispersal of the Endemic Hawaiian Freshwater Amphidromous Gastropod Neritina granosa (Prosobranchia: Neritidae), Marc H. Hodges and Fred W. Allendorf

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Molecular Analysis of Bacterial Communities in a Three-Compartment Granular Activated Sludge System Indicates Community-Level Control by Incompatible Nitrification Processes, William Holben, Kazuhiko Noto, Tatsuo Sumino, and Yuichi Suwa

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On the Importance of Stopover Sites to Migrating Birds, Richard L. Hutto

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Coreceptor Utilization by Human Immunodeficiency Virus Type 1 is not a Primary Determinant of Neutralization Sensitivity, Rachel A. LaCasse, Kathryn E. Follis, Tarsem Moudgil, Meg Trahey, James M. Binley, Vicente Planelles, Susan Zolla-Pazner, and Jack H. Nunberg

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Insect Herbivory Above- and Belowground: Individual and Joint Effects on Plant Fitness, John L. Maron

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The A326S mutant of G(iα1) as an approximation of the receptor-bound state, Bruce A. Posner, Mark B. Mixon, Mark A. Wall, Stephen R. Sprang, and Alfred G. Gilman

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Invasion of the nucleotide snatchers, Stephen R. Sprang and David E. Coleman

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Exchange of substrate and inhibitor specificities between adenylyl and guanylyl cyclases, R. K. Sunahara, A. Beuve, J. J.G. Tesmer, S. R. Sprang, D. L. Garbers, and A. G. Gilman

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Structure of the protein kinase Cβ phospholipid-binding C2 domain complexed with Ca2+, R. Bryan Sutton and Stephen R. Sprang

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Grizzly Bear Digging: Effects on Subalpine Meadow Plants in Relation to Mineral Nitrogen Availability, Sandra E. Tardiff and Jack Arthur Stanford

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Structural basis of activity and subunit recognition in G protein heterotrimers, Mark A. Wall, Bruce A. Posner, and Stephen R. Sprang

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Asymmetrical Force Production in the Maneuvering Flight of Pigeons, Douglas R. Warrick, Kenneth P. Dial, and Andrew A. Biewener

Submissions from 1997

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Competition and Facilitation: a Synthetic Approach to Interactions in Plant Communities, Ragan M. Callaway and Lawrence R. Walker

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Characterization of the Sediment Bacterial Community in Groundwater Discharge Zones of an Alkaline Fen: A Seasonal Study, Timothy C. Gsell, William E. Holben, and Roy M. Ventullo

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A carboxy-terminal processing protease gene is located immediately upstream of the invasion-associated locus from Bartonella bacilliformis, Samuel J. Mitchell and Michael F. Minnick

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Ecophysiological Responses of Three Riparian Graminoids to Changes in the Soil Water Table, Anna Sala and Robert S. Nowak

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Recovery of Crenarchaeotal Ribosomal DNA Sequences from Freshwater-Lake Sediments, Christa Schleper, William E. Holben, and Hans-Peter Klenk

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G protein mechanisms: Insights from Structural Analysis, Stephen R. Sprang

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Crystal structure of the adenylyl cyclase activator G(sα), Roger K. Sunahara, John J.G. Tesmer, Alfred G. Gilman, and Stephen R. Sprang

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Structure of RGS4 bound to AlF4--activated G(iα1): Stabilization of the Transition State for GTP Hydrolysis, John J.G. Tesmer, David M. Berman, Alfred G. Gilman, and Stephen R. Sprang

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Crystal structure of the catalytic domains of adenylyl cyclase in a complex with G(sα)·GTPγΣ, John J.G. Tesmer, Roger K. Sunahara, Alfred G. Gilman, and Stephen R. Sprang

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Reversion rates in a leuB auxotroph of Escherichia coli K-12 correlate with ppGpp levels during exponential growth, Barbara E. Wright and Michael F. Minnick

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Conservation Implications of a Multi-scale Study of Flammulated Owl (Otus flammeolus) Habitat Use in the Northern Rocky Mountains, USA, Vita Wright, Sallie J. Hejl, and Richard L. Hutto

Submissions from 1996

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Structure of the GDP-Pi complex of Gly203→Ala G(iα1): a mimic of the ternary product complex of Galpha-catalyzed GTP hydrolysis, Albert M. Berghuis, Ethan Lee, André S. Raw, Alfred G. Gilman, and Stephen R. Sprang

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Competition and Facilitation: Contrasting Effects of Artemisia Tridentata on Desert vs Montane Pines, Ragan M. Callaway, EH DeLucia, Darrin Moore, R Nowak, W. H. Schlesinger, and Brenda J. Moor

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Temperature-Driven Variation in Substrate Oxygenation and the Balance of Competition and Facilitation, Ragan M. Callaway and Leah King

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Variation in Leaf Structure and Function in Quercus Douglasii Trees Differing in Root Architecture and Drought History, Ragan M. Callaway and Bruce E. Mahall

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Abiotic Stress and the Relative Importance of Interference and Facilitation in Montane Bunchgrass Communities in Western Montana, John T. Greenlee and Ragan M. Callaway

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Effects of Regional Origin and Genotype on Intraspecific Root Communication in the Desert Shrub Ambrosia Dumosa (Asteraceae), Bruce E. Mahall and Ragan M. Callaway

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Analysis of Linear Plasmid Dimers in Borrelia Burgdorferi Sensu Lato Isolates: Implications Concerning the Potential Mechanism of Linear Plasmid Replication, Richard T. Marconi, Sherwood Casjens, Ulrike G. Munderloh, and D. Scott Samuels

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Evidence for Acquisition in Nature of a Chromosomal 2,4-Dichlorophenoxyacetic Acid/(alpha)-Ketoglutarate Dioxygenase Gene by Different Burkholderia spp., V. Grace Matheson, Larry J. Forney, Yuichi Suwa, Cindy H. Nakahatsu, Alan J. Sexstone, and William E. Holben

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Seeing double: Crystal Structures of the Type I TNF Receptor, James H. Naismith, Barbara J. Brandhuber, Tracey Q. Devine, and Stephen R. Sprang

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Structures of the extracellular domain of the type I tumor necrosis factor receptor, James H. Naismith, Tracey Q. Devine, Tadahiko Kohno, and Stephen R. Sprang

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Impact of a Parasitic Plant on the Structure and Dynamics of Salt Marsh Vegetation, Steven C. Pennings and Ragan M. Callaway

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Directed Insertion of a Selectable Marker into a Circular Plasmid of Borrelia Burgdorferi, Patricia Rosa, D. Scott Samuels, Daniel Hogan, Brian Stevenson, Sherwood Casjens, and Kit Tilly

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A Protocol for Ecosystem Management, Jack A. Stanford and G. C. Poole

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Characterization of a Chromosomally Encoded 2,4-Dichlorophenoxyacetic Acid/a-Ketoglutarate Dioxygenase from Burkholderia sp. Strain RASC, Yuichi Suwa, Alice D. Wright, Fumitasu Fukimori, Kathy A. Nummy, Robert P. Hausinger, William E. Holben, and Larry J. Forney

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Scaling of Muscle Composition, Wing Morphology, and Intermittent Flight Behavior in Woodpeckers, Bret W. Tobalske

Submissions from 1995

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2,4-Dichlorophenoxyacetic Acid-Degrading Bacteria Contain Mosaics of Catabolic Genes, R. R. Fulthorpe, C. McGowan, O. V. Maltseva, William E. Holben, and J. M. Tiedje

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Effects of Silvicultural Treatments in the Rocky Mountains, Sallie J. Hejl, Richard L. Hutto, Charles R. Preston, and Deborah M. Finch

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A Comparison of Bird Detection Rates Derived from On-Road versus Off-Road Point Counts in Northern Montana, Richard L. Hutto, Sallie J. Hejl, Jeffrey F. Kelly, and Sandra M. Pletschet

Characterization of a Two-Gene Locus from Bartonella-Bacilliformis Associated with the Ability to Invade Human Erythrocytes, Samuel J. Mitchell and Michael F. Minnick

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Crystallographic evidence for dimerization of unliganded tumor necrosis factor receptor, James H. Naismith, Tracey Q. Devine, Barbara J. Brandhuber, and Stephen R. Sprang

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How Ras works: structure of a Rap-Raf complex, Stephen R. Sprang

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Structure of the first C2 domain of synaptotagmin I: A Novel CA(2+)/Phospholipid-Binding Fold, R. Bryan Sutton, Bazbek A. Davletov, Albert M. Berghuis, Thomas C. Sudhof, and Stephen R. Sprang

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Maintaining Bird Diversity in Western Larch/Douglas-fir Forests, Bret W. Tobalske, Raymond C. Shearer, and Richard L. Hutto

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Characterization of Diverse 2,4-Dichlorophenoxyacetic Acid-Degradative Plasmids Isolated from Soil by Complementation, Eva M. Top, William E. Holben, and Larry J. Forney

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The structure of the G protein heterotrimer Giα1β1γ2, Mark A. Wall, David E. Coleman, Ethan Lee, Jorge A. Iñiguez-Lluhi, Bruce A. Posner, Alfred G. Gilman, and Stephen R. Sprang

Submissions from 1994

Facilitative and Interfering Effects of Arthrocnemum-Subterminale on Winter Annuals, Ragan M. Callaway

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Crystallization and preliminary crystallographic studies of giα1 and mutants of giα1 in the GTP and GDP-bound states, David E. Coleman, Ethan Lee, Mark B. Mixon, Maurine E. Linder, Albert M. Berghuis, Alfred G. Gilman, and Stephen R. Sprang

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The Composition and Social-Organization of Mixed-Species Flocks in a Tropical Deciduous Forest in Western Mexico, Richard L. Hutto

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Analysis of Competition in Soil among 2,4-Dichlorophenoxyacetic Acid-Degrading Bacteria, J. O. Ka, William E. Holben, and James M. Tiedje

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Genetic and Phenotypic Diversity of 2,4-Dichlorophenoxyacetic Acid (2,4-D)-Degrading Bacteria Isolated from 2,4-D-Treated Field Soils, J. O. Ka, William E. Holben, and James M. Tiedje

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Use of Gene Probes to Aid in Recovery and Identification of Functionally Dominant 2,4-Dichlorophenoxyacetic Acid-Degrading Populations in Soil, J. O. Ka, William E. Holben, and James M. Tiedje

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Mechanism of GTP hydrolysis by G-protein α subunits, Christiane Kleuss, André S. Raw, Ethan Lee, Stephen R. Sprang, and Alfred G. Gilman

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Analysis of the Distribution and Molecular Heterogeneity of the ospD Gene among the Lyme Disease Spirochetes: Evidence for Lateral Gene Exchange, Richard T. Marconi, D. Scott Samuels, Robert K. Landry, and Claude F. Garon

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Identification of Outer-Membrane Proteins of Bartonella-Bacilliformis, Michael F. Minnick

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Two crystal forms of the extracellular domain of type I tumor necrosis factor receptor, Lynn E. Rodseth, Barbara Brandhuber, Tracey Q. Devine, Michael J. Eck, Karin Hale, James H. Naismith, and Stephen R. Sprang

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Microbial evolution in a simple unstructured environment: Genetic differentiation in Escherichia coli, R. F. Rosenzweig, R. R. Sharp, D. S. Treves, and J. Adams

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Genetic Transformation of the Lyme Disease Agent Borrelia Burgdorferi with Coumarin-Resistant gyrB., D. Scott Samuels, Kathleen E. Mach, and Claude F. Garon

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gyrB mutations in Coumermycin A1-Resistant Borrelia Burgdorferi., D. Scott Samuels, Richard T. Marconi, Wai Mun Huang, and Claude F. Garon

Submissions from 1993

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Affinity panning of a library of peptides displayed on bacteriophages reveals the binding specificity of BiP, Sylvie Blond-Elguindi, Steven E. Cwirla, William J. Dower, Robert J. Lipshutz, Stephen R. Sprang, Joseph F. Sambrook, and Mary Jane H. Gething

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Speciation in Golden-Plovers, Pluvialis dominica and P. fulva: Evidence from the Breeding Grounds, Peter G. Connors, Brian J. McCaffery, and John L. Maron

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Effects of Silvicultural Treatments on Forest Birds in the Rocky Mountains: Implications and Management Recommendations, Richard L. Hutto, Sallie J. Hejl, Charles R. Preston, and Deborah M. Finch

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Breeding Ground Fidelity and Mate Retention in the Pacific Golden-Plover, Oscar W. Johnson, Peter G. Connors, Phillip L. Bruner, and John L. Maron

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Transcriptional Analyses and Mapping of the ospC Gene in Lyme Disease Spirochetes, Richard T. Marconi, D. Scott Samuels, and Claude F. Garon

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Identification of a Protein in Several Borrelia Species which is Related to OspC of the Lyme Disease Spirochetes., Richard T. Marconi, D. Scott Samuels, Tom G. Schwan, and Claude F. Garon

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Nucleotide Sequence of the 5S Ribosomal RNA Gene of Bartonella bacilliformis, Michael F. Minnick

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Nucleotide Sequence and Comparison of the 5S Ribosomal RNA Genes of Rochalimaea henselae, R-quintana and Brucella abortus, Michael F. Minnick and Gary L. Stiegler

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Coumermycin A1 Inhibits Growth and Induces Relaxation of Supercoiled Plasmids in Borrelia Burgdorferi, the Lyme Disease Agent, D. Scott Samuels and Claude F. Garon

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Characterization of Bartonella-Bacilliformis Flagella and Effect of antiflagellin antibodies on Invasion of Human Erythrocytes, David C. Scherer, Isaure DeBuron-Connors, and Michael F. Minnick

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On a (β-) roll, S. R. Sprang

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Cytokine structural taxonomy and mechanisms of receptor engagement, Stephen R. Sprang and J. Fernando Bazan

Submissions from 1992

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Avian Forelimb Muscles and Nonsteady Flight: Can Birds Fly Without Using the Muscles in their Wings?, Kenneth P. Dial

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The structure of human lymphotoxin (tumor necrosis factor-β) at 1.9-Å resolution, Michael J. Eckt, Mark Ultsch, Ernst Rinderknecht, Abraham M. De Vos, and Stephen R. Sprang

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Intermediates in the Constitutive and Regulated Secretory Pathways Released In Vitro from Semi-intact Cells, Mark L. Grimes and Regis B. Kelly