Gary Roberts
· Professor of Bacteriology, EmeritusUniversity of Wisconsin-Madison · Bacteriology
Active 1972–2021
About
Gary Roberts is a Professor of Bacteriology and is currently listed as Emeritus at the University of Wisconsin-Madison. He is associated with the Department of Bacteriology within the College of Agricultural & Life Sciences. His office is located in the Microbial Sciences Building at 1550 Linden Dr., Madison, WI 53706. His contact email is gprobert@wisc.edu. As a faculty member, he has contributed to the academic and research activities of the department, supporting the university's mission in microbiology and bacteriology. Further details about his specific research focus, background, and key contributions are not provided on this page.
Research topics
- Computer Science
Selected publications
The Journal of the American Dental Association · 2021
- Computer Science
- Computer Science
Palgrave Macmillan US eBooks · 2016-01-01
book-chapter1st authorCorrespondingThe final element of the triune nature of health relates to our mind, a battlefield of the worldview realms between our eternal spiritual nature, the natural desires and instincts of the flesh, the allure of worldly success, pleasure, and power, and the influence of the demonic realm of evil. The focus is to identify the flawed and dysfunctional thinking patterns that impede our ability to achieve our calling and purpose through the influence of fear and their related cognitive distortions such as magnification and fortune-telling. The chapter concludes with concrete guidance on identifying and remedying dysfunctional thinking patterns.
Palgrave Macmillan US eBooks · 2016-01-01
book-chapter1st authorCorrespondingThis final chapter provides an opportunity to summarize reader progress. The reader should complete again the burnout and work-related job attitude questions on pages xx and zz, and compare their results with earlier administrations. CSLSI growth is a lifelong process and the book concludes with final reflections and encouragement on CSLSI growth in Christ-likeness.
Palgrave Macmillan US eBooks · 2016-01-01
book-chapter1st authorCorrespondingA high level of CSLSI requires healthy relationships as articulated in the Great Commandment. This includes a foundational level of humility and relationship accountability by first “removing the log from our eye.” This chapter reinforces our calling to work with difficult people and provide support and encouragement to others. It concludes with the importance of assessing our ability to work with persons of diverse cultures and worldviews.
Panel 3: Legal Issues Surrounding Concussions
2014-01-01
articleThe speakers will discuss how the legal profession views the current problems that sports organizations face when attempting to handle various types of concussion related injuries.
Journal of Bacteriology · 2012-08-25 · 19 citations
articleOpen accessSenior authorCorrespondingThe single-component RcoM transcription factor couples an N-terminally bound heme cofactor with a C-terminal "LytTR" DNA-binding domain. Here the RcoM(Bx)-1 protein from Burkholderia xenovorans LB400 was heterologously expressed and then purified in a form with minimal bound CO (~10%) and was found to stably bind this effector with a nanomolar affinity. DNase I protection assays demonstrated that the CO-associated form binds with a micromolar affinity to two ~60-bp DNA regions, each comprised of a novel set of three direct-repeat binding sites spaced 21 bp apart on center. Binding to each region was independent, while binding to the triplet binding sites within a region was cooperative, depended upon spacing and sequence, and was marked by phased DNase I hyperactivity and protection patterns consistent with considerable changes in the DNA conformation of the nucleoprotein complex. Each protected binding site spanned a conserved motif (5'-TTnnnG-3') that was present, in triplicate, in putative RcoM-binding regions of more than a dozen organisms. In vivo screens confirmed the functional importance of the conserved "TTnnnG" motif residues and their triplet arrangement and were also used to determine an improved binding motif [5'-CnnC(C/A)(G/A)TTCAnG-3'] that more closely corresponds to canonical LytTR domain/DNA-binding sites. A low-affinity but CO-dependent binding of RcoM(Bx)-1 to a variety of DNA probes was demonstrated in vitro. We posit that for the RcoM(Bx)-1 protein, the high CO affinity combined with multiple low-affinity DNA-binding events constitutes a transcriptional "accumulating switch" that senses low but persistent CO levels.
JBIC Journal of Biological Inorganic Chemistry · 2012-08-01 · 25 citations
articleJournal of Bacteriology · 2011-04-30 · 42 citations
articleSenior authorCorrespondingRibulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO) catalyzes the first step of CO(2) fixation in the Calvin-Benson-Bassham (CBB) cycle. Besides its function in fixing CO(2) to support photoautotrophic growth, the CBB cycle is also important under photoheterotrophic growth conditions in purple nonsulfur photosynthetic bacteria. It has been assumed that the poor photoheterotrophic growth of RubisCO-deficient strains was due to the accumulation of excess intracellular reductant, which implied that the CBB cycle is important for maintaining the redox balance under these conditions. However, we present analyses of cbbM mutants in Rhodospirillum rubrum that indicate that toxicity is the result of an elevated intracellular pool of ribulose-1,5-bisphosphate (RuBP). There is a redox effect on growth, but it is apparently an indirect effect on the accumulation of RuBP, perhaps by the regulation of the activities of enzymes involved in RuBP regeneration. Our studies also show that the CBB cycle is not essential for R. rubrum to grow under photoheterotrophic conditions and that its role in controlling the redox balance needs to be further elucidated. Finally, we also show that CbbR is a positive transcriptional regulator of the cbb operon (cbbEFPT) in R. rubrum, as seen with related organisms, and define the transcriptional organization of the cbb genes.
Ligand Responses of Vfr, the Virulence Factor Regulator from Pseudomonas aeruginosa
Journal of Bacteriology · 2011-07-16 · 29 citations
articleOpen accessVfr, a transcription factor homologous to the Escherichia coli cyclic AMP (cAMP) receptor protein (CRP), regulates many aspects of virulence in Pseudomonas aeruginosa. Vfr, like CRP, binds to cAMP and then recognizes its target DNA and activates transcription. Here we report that Vfr has important functional differences from CRP in terms of ligand sensing and response. First, Vfr has a significantly higher cAMP affinity than does CRP, which might explain the mysteriously unidirectional functional complementation between the two proteins (S. E. H. West et al., J. Bacteriol. 176:7532-7542, 1994). Second, Vfr is activated by both cAMP and cGMP, while CRP is specific to cAMP. Mutagenic analyses show that Thr133 (analogous to Ser128 of CRP) is the key residue for both of these distinct Vfr properties. On the other hand, substitutions that cause cAMP-independent activity in Vfr are similar to those seen in CRP, suggesting that a common cAMP activation mechanism is present. In the course of these analyses, we found a remarkable class of Vfr variants that have completely reversed the regulatory logic of the protein: they are active in DNA binding without cAMP and are strongly inhibited by cAMP. The physiological impact of Vfr's ligand sensing and response is discussed, as is a plausible basis for the fundamental change in protein allostery in the novel group of Vfr variants.
Complete genome sequence of Rhodospirillum rubrum type strain (S1T)
Standards in Genomic Sciences · 2011-06-30 · 56 citations
articleOpen accessRhodospirillum rubrum (Esmarch 1887) Molisch 1907 is the type species of the genus Rhodospirillum, which is the type genus of the family Rhodospirillaceae in the class Alphaproteobacteria. The species is of special interest because it is an anoxygenic phototroph that produces extracellular elemental sulfur (instead of oxygen) while harvesting light. It contains one of the most simple photosynthetic systems currently known, lacking light harvesting complex 2. Strain S1(T) can grow on carbon monoxide as sole energy source. With currently over 1,750 PubMed entries, R. rubrum is one of the most intensively studied microbial species, in particular for physiological and genetic studies. Next to R. centenum strain SW, the genome sequence of strain S1(T) is only the second genome of a member of the genus Rhodospirillum to be published, but the first type strain genome from the genus. The 4,352,825 bp long chromosome and 53,732 bp plasmid with a total of 3,850 protein-coding and 83 RNA genes were sequenced as part of the DOE Joint Genome Institute Program DOEM 2002.
Recent grants
NIH · $203k · 2008
NIH · $5.0M · 2011
NIH · $724k · 1992
Molecular Basis of PII function
NIH · $2.0M · 2002–2012
Frequent coauthors
- 35 shared
Yaoping Zhang
Southeast University
- 35 shared
Robert L. Kerby
University of Wisconsin–Madison
- 24 shared
Hwan Youn
California State University, Fresno
- 21 shared
Paul W. Ludden
Southern Methodist University
- 20 shared
Edward L. Pohlmann
Great Lakes Bioenergy Research Center
- 19 shared
Mary Conrad
Cubist Pharmaceuticals (United States)
- 16 shared
Marc V. Thorsteinsson
United States Military Academy
- 13 shared
Jon T. Roll
- Resume-aware match score
- Save to shortlist
- AI-drafted outreach
See your match with Gary Roberts
PhdFit ranks faculty by your research interests, methods, and publications — grounded in their actual work, not templates.
- Free to start
- No credit card
- 30-second signup