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Träfflista för sökning "WFRF:(Nguyen H.) srt2:(1995-1999)"

Sökning: WFRF:(Nguyen H.) > (1995-1999)

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1.
  • Dunham, I, et al. (författare)
  • The DNA sequence of human chromosome 22
  • 1999
  • Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 402:6761, s. 489-495
  • Tidskriftsartikel (refereegranskat)
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  • Kim, S.K., et al. (författare)
  • Binding Geometries of Triple Helix Selective Benzopyrido [4,3-b]indole Ligands Complexed with Double- and Triple-Helical Polynucleotides
  • 1997
  • Ingår i: Biopolymers. - 0006-3525 .- 1097-0282. ; 42:1, s. 101-111
  • Tidskriftsartikel (refereegranskat)abstract
    • The binding modes of three benzopyrido[4,3-b]indole derivatives (and one benzo[f]pyrido[4-3b]quinoxaline derivative) with respect to double helical poly(dA) . poly(dT) and poly[d(A-T)](2) and triple-helical poly(dA) . 2poly(dT) have been investigated using linear dichroism (LD) and CD: (I) 3-methoxy-11-amino-BePI where BePI = {7H-8-methyl-benzo[e]pyrido[4,3-b]indole}, (II) 3-methoxy-11-[(3'-amino)propylamino]-BePI, (III) 3-methoxy-7-[(3'diethylamino)propylamino]BgPI where BgPI = {benzo[g]pyrido[4,3-b]indole}, and (IV) 3-methoxy-11-[(3'amino)propylamino]BfPQ where BfPQ = {benzo[f]pyrido[4-3b]quinoxaline}. The magnitudes of the reduced LD of the electronic transitions of the polynucleotide bases and of the bound ligands are generally very similar, suggesting an orientation of the plane of the ligands' fused-ring systems preferentially perpendicular to the helix axis. The LD results suggest that all of the ligands are intercalated for all three polynucleotides. The induced CD spectrum of the BePI chromophore in the (II-BePI)-poly[d(A-T)](2) complex is almost a mirror image of that for the (I-BePI)-poly(dA) . poly(dT) and (I-BePI)-poly(dA) . 2poly(dT) complexes, suggesting an antisymmetric orientation of the BePI moiety upon intercalation in poly[d(A-T)]2 compared to the other polynucleotides. The induced CD of I-BePI bound to poly(dA) . 2poly(dT) suggests a geometry that is intermediate between that of its other two complexes. The concluded intercalative binding as well as the conformational variations between the different BePI complexes are of interest in relation to the fact that BePI derivatives are triplex stabilizers.
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  • Nguyen, N, et al. (författare)
  • Chromosomal sequencing using a PCR-based biotin-capture method allowed isolation of the complete gene for the outer membrane protein A of Klebsiella pneumoniae
  • 1998
  • Ingår i: Gene. - 0378-1119 .- 1879-0038. ; 210:1, s. 93-101
  • Tidskriftsartikel (refereegranskat)abstract
    • By employing a novel biotin-and PCR-assisted capture method, which allows determination of unknown sequences on chromosomal DNA. the gene for the outer membrane protein A (OmpA) of Klebsiella pneumoniae has been isolated and sequenced to completion. The method involves linear amplification of DNA from a biotinylated primer annealing to a region with known sequence. After capture of the amplified single-stranded DNA on to paramagnetic beads, unspecifically annealing primers, i.e. arbitrary primers, were used to generate fragments with only partly determined nt sequences. The homology of the sequenced gene to ompAs of related bacteria is discussed. The ompA gene was assembled for intracellular expression in Escherichia coli, and two different fusion proteins were produced and recovered with good yields. The importance of the novel chromosomal sequencing method for gene isolation in general and the potential use of the OmpA fusion proteins are discussed. (C) 1998 Elsevier Science B.V.
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  • Resultat 1-6 av 6

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