Search Results - (Author, Cooperation:D. Andersson)
-
1Latest Papers from Table of Contents or Articles in PressG. Tinghog ; D. Andersson ; C. Bonn ; H. Bottiger ; C. Josephson ; G. Lundgren ; D. Vastfjall ; M. Kirchler ; M. Johannesson
Nature Publishing Group (NPG)
Published 2013Staff ViewPublication Date: 2013-06-07Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: *Cooperative Behavior ; *Decision Making ; *Ego ; Female ; *Game Theory ; *Gift Giving ; Humans ; *Impulsive Behavior ; *Intuition ; Male ; *Models, PsychologicalPublished by: -
2Latest Papers from Table of Contents or Articles in PressZykov, I. N., Samuelsen, O., Jakobsen, L., Smabrekke, L., Andersson, D. I., Sundsfjord, A., Frimodt-Moller, N.
The American Society for Microbiology (ASM)
Published 2018Staff ViewPublication Date: 2018-05-26Publisher: The American Society for Microbiology (ASM)Print ISSN: 0066-4804Electronic ISSN: 1098-6596Topics: BiologyMedicinePublished by: -
3Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-03-12Publisher: Oxford University PressPrint ISSN: 0895-7061Electronic ISSN: 1879-1905Topics: MedicinePublished by: -
4Articles: DFG German National LicensesMadsén, K. ; Andersson, D. ; Lisak, M. ; Lundgren, L. ; Semenov, V.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: A theoretical and experimental investigation is made of the leakage power in microwave transmit–receive switches. The peak leakage power is shown to be independent of incident peak power but to depend on the rise time of the incident pulse. The plateau leakage power through the switch is also estimated and shown to be independent of incident peak power. The theoretical predictions for peak leakage power and plateau leakage power are compared and found to be in good agreement with experimental results. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1365-2958Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyMedicineNotes: lacZ transcriptional and translational fusions of various lengths showed that the control was exerted mainly at the translational level and required both coding and leader sequences in the btuB transcript. Regulatory mutants with a B12 non-repressible phenotype were isolated and the mutations were shown to be located at several sites within the btuB leader. Analysis of constructs carrying site-directed point mutations, which either destabilized or restabilized a putative RNA hairpin that sequesters the btuB ribosomal binding site, demonstrated that this hairpin was essential for normal repression. Comparison of the S. typhimurium btuB gene with the previously characterized S. typhimurium cbiA and Escherichia coli btuB genes reveals significant similarities as well as differences in the cis-acting sequences required for repression.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesRichter-Dahlfors, A. A. ; Ravnum, S. ; Andersson, D. I.
Oxford, UK : Blackwell Publishing Ltd
Published 1994Staff ViewISSN: 1365-2958Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyMedicineNotes: Expression of the cob operon is repressed by B12 via a post-transcriptional control mechanism which requires sequence elements within the leader region of the mRNA and the first gene of the operon, the cbiA gene. Here we show that B12 repression of cbiA gene expression occurs at the level of translation initiation through sequestration of the ribosomal binding site (rbs) in an RNA hairpin. Analysis of mutations that destabilize or restabilize the secondary structure demonstrates that folding of the hairpin is essential for repression. The existence of the hairpin was confirmed by a secondary structure analysis of RNA from the wild type and three mutants. Deletions that remove the upstream part of the leader confer a drastic reduction in translation efficiency. This low-level translation is caused by the hairpin, as indicated by the finding that suppressor mutations that destabilize the hairpin restore efficient translation. Thus, the native upstream RNA functions as a translation enhancer and acts to relieve the hairpin's inhibitory effect on translation initiation. The inhibitory effect of the hairpin was confirmed by a ribosomal toeprinting analysis. We propose that the translational control of the cbiA gene mediates repression of the entire cob operon.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1365-2958Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyMedicineNotes: We have identified an anaerobicaily induced promoter for the cobalamin biosynthetic (cob) genes. In a plasmid the Cob promoter showed two of the three types of control of the intact chromosomal Cob operon: anaerobic induction and cAMP stimulation. Cobalamin repression was observed only in promoter fragments which included sequences far downstream of the transcription start site, suggesting that this control is post-transcriptional. One anaerobically induced transcript was identified and its 5′ end was determined. Deletion mapping showed that 60 nucleotides upstream of the start site were sufficient for anaerobic synthesis of this transcript. Upstream of the transcription start site a putative σ70-dependent -10 recognition sequence was identified; however, no consensus -35 region was observed.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 0039-6028Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 0039-6028Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 0009-2614Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 0009-2614Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 0167-2584Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 0040-6090Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 1617-4623Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary We have studied the kinetics of poly(U) translation by three ribosomal ambiguity (Ram) mutants in an in vitro system with performance characteristics similar to those expressed in vivo. The leucine missense frequency supported by Ram ribosomes with tRNA 2 Leu increases between six and twelve-fold over that of wild-type ribosomes, while the corresponding increase with tRNA 4 Leu was between four and eight-fold, depending on the rpsD allele. We have used a steady-state assay for profreading to identify the kinetic lesion responsible for the Ram phenotype. We were unable to detect any difference between Ram and wild-type ribosomes with respect to the initial kinetics of amino-acyl-tRNA selection. All of the increased error rates could be associated with a decreased capacity of these Ram ribosomes to discard non-cognate aminoacyl-tRNA by proof reading.Type of Medium: Electronic ResourceURL: