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  • DNA bending  (1)
  • Matter waves and collective properties of cold atoms and molecules  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    In vitro interactions of integration host factor with the ompF promoter-regulatory region of Escherichia coli (1992)
    Springer
    Molecular genetics and genomics 231 (1992), S. 248-255 
    Details
    ISSN: 1617-4623
    Keywords: ompF-IHF binding ; DNA bending ; Transcriptional inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Previous work has shown that integration host factor (IHF) mutants have increased expression and altered osmoregulation of OmpF, a major Escherichia coli outer membrane protein. By in vitro analysis the possibility was investigated that IHF interacts directly with the ompF promoter region. Gel retardation assays and DNase I protection experiments showed that IHF binds to two sites in the ompF promoter region centered at positions −180 and −60 relative to the start of transcription. Gel electrophoresis studies with circularly permuted ompF promoter fragments indicated that IHF binding strongly increased a small intrinsic bend in the ompF promoter region. The addition of IHF to a purified in vitro transcription system strongly and specifically inhibited ompF transcription. This inhibition was reversed by increasing the concentration of OmpR, a positive activator required for ompF expression, suggesting that IHF may inhibit ompF transcription by altering how OmpR interacts with the ompF promoter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00279798
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    Paper (German National Licenses)
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    Dipolar bright solitons and solitary vortices in a radial lattice (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-11-14
    Description: Author(s): Chunqing Huang, Lin Lyu, Hao Huang, Zhaopin Chen, Shenhe Fu, Haishu Tan, Boris A. Malomed, and Yongyao Li Stabilizing vortex solitons with high values of the topological charge S is a challenging issue in optics, studies of Bose-Einstein condensates (BECs), and other fields. To develop an approach to the solution of this problem, we consider a two-dimensional dipolar BEC under the action of an axisymmet... [Phys. Rev. A 96, 053617] Published Mon Nov 13, 2017
    Keywords: Matter waves and collective properties of cold atoms and molecules
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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