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  • 1
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    PRDM9 is a major determinant of meiotic recombination hotspots in humans and mice (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-01-02
    Description: Meiotic recombination events cluster into narrow segments of the genome, defined as hotspots. Here, we demonstrate that a major player for hotspot specification is the Prdm9 gene. First, two mouse strains that differ in hotspot usage are polymorphic for the zinc finger DNA binding array of PRDM9. Second, the human consensus PRDM9 allele is predicted to recognize the 13-mer motif enriched at human hotspots; this DNA binding specificity is verified by in vitro studies. Third, allelic variants of PRDM9 zinc fingers are significantly associated with variability in genome-wide hotspot usage among humans. Our results provide a molecular basis for the distribution of meiotic recombination in mammals, in which the binding of PRDM9 to specific DNA sequences targets the initiation of recombination at specific locations in the genome.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4295902/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4295902/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baudat, F -- Buard, J -- Grey, C -- Fledel-Alon, A -- Ober, C -- Przeworski, M -- Coop, G -- de Massy, B -- 03S1/PHS HHS/ -- GM83098/GM/NIGMS NIH HHS/ -- HD21244/HD/NICHD NIH HHS/ -- HL085197/HL/NHLBI NIH HHS/ -- R01 GM083098/GM/NIGMS NIH HHS/ -- R01 HD021244/HD/NICHD NIH HHS/ -- R01 HL085197/HL/NHLBI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Feb 12;327(5967):836-40. doi: 10.1126/science.1183439. Epub 2009 Dec 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique Humaine, UPR1142, CNRS, Montpellier, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20044539" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; DNA/chemistry/metabolism ; DNA Breaks, Double-Stranded ; DNA-Binding Proteins/chemistry/genetics/metabolism ; Genome ; Genome, Human ; Genotype ; Histone-Lysine N-Methyltransferase/chemistry/*genetics/*metabolism ; Humans ; Meiosis/*genetics ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Phenotype ; *Recombination, Genetic ; Zinc Fingers/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Role of DC subsets in IMQ-induced psoriasis [Immunology] (2013)
    National Academy of Sciences
    Details
    Publication Date: 2013-06-26
    Description: Psoriasis is an autoinflammatory skin disease of unknown etiology. Topical application of Aldara cream containing the Toll-like receptor (TLR)7 agonist Imiquimod (IMQ) onto patients induces flares of psoriasis. Likewise, in mice IMQ triggers pathological changes closely resembling psoriatic plaque formation. Key cytokines like IL-23 and type-I IFN (IFN-I), both being...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal Broadening of an Optical Transition in a Chromoprotein between 50 mK and 15 K (1995)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 14561-14565 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100039a051
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  • 4
    Electronic Resource
    Electronic Resource
    Zigzag Morphology of a Poly(styrene-b-hexyl isocyanate) Rod-Coil Block Copolymer (1995)
    s.l. : American Chemical Society
    Macromolecules 28 (1995), S. 1688-1697 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00109a048
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  • 5
    Electronic Resource
    Electronic Resource
    Mössbauer study of the vibrational anisotropy and of the light-induced population of metastable states in single-crystalline guanidinium nitroprusside (1999)
    Springer
    The European physical journal 12 (1999), S. 191-198 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 63.20.Dj Phonon states and bands, normal modes, and phonon dispersion - 76.80.+y Mössbauer effect; other -ray spectroscopy - 39.30.+w Spectroscopic techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Mössbauer studies were performed on single crystals of guanidinium nitroprusside with different orientations of their principal crystallographic axes (a, b, c) with respect to the incident radiation. The markedly anisotropic Lamb-Mössbauer factor f LM , i.e. f LM (a) = 0.118(8), f LM (b) = 0.174(8), f LM (c) = 0.202(8) is in contrast to that of nitroprussides with inorganic anions. The observed anisotropy is ascribed to the anisotropic vibrational mean-square displacement of the nitroprusside anions as a whole which is due to the specific packing of both, anions and cations, as well as the very weak chemical bonding between the ions, typical only for guanidinium nitroprusside. The vibrational anisotropy of iron atoms in barium nitroprusside that has been observed by X-ray structural investigations has a different origin and therefore does not result in an anisotropic Lamb-Mössbauer factor. We have also investigated metastable states in guanidinium nitroprusside that have been populated by means of incoherent irradiation from light-emitting diodes. With a specific orientation of the guanidinium nitroprusside single crystal a population of the metastable states up to 26% could be achieved. Populations of comparable size on lithium, sodium and potassium nitroprussides have only been reached using coherent laser irradiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050995
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  • 6
    Electronic Resource
    Electronic Resource
    Ancestral and recombinant 16-locus HLA haplotypes in the Hutterites (1999)
    Springer
    Immunogenetics 49 (1999), S. 491-497 
    Details
    ISSN: 1432-1211
    Keywords: Key words HLA ; Ancestral haplotypes ; Recombinant haplotypes ; Hutterites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Prior studies in the Schmiedeleut Hutterites of South Dakota have demonstrated associations between human leukocyte antigen (HLA) haplotype matching and fetal loss (Ober et al. 1992) and mate preferences (Ober et al. 1997), as well as deficiencies of homozygotes for HLA haplotypes (Kostyu et al. 1993). These studies were based on the serologically-defined five-locus HLA-A, -C, -B, -DR, -DQ haplotype. To further elucidate the effects of specific major histocompatibility (MHC) loci or regions on fetal loss and mate choice, we genotyped a sample of Hutterites for 14 MHC loci by DNA or biochemical methods. Typing for additional loci in the HLA-A to HLA-DPB1 region increased the number of recognized Hutterite MHC haplotypes to 67, and further localized the site of cross-over in 9 of 15 recombinant haplotypes. Hutterite MHC haplotype sequences are similar to those observed in outbred Caucasians, suggesting that the influence of HLA haplotypes on fetal loss and mating structure may be general.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002510050525
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  • 7
    Electronic Resource
    Electronic Resource
    Photodissociation of carbonmonoxy-porphyrin complexes (1996)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 18 (1996), S. 353-357 
    Details
    ISSN: 0392-6737
    Keywords: Mössbauer spectra ; Spectra ; photodissociation and photoionization of biomolecules ; bioluminescence ; Measurement of rate constants ; reaction cross-sections and activation energy ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Partial photodissociation of two carbonmonoxy-porphyrin complexes, a bridged and a fenced one, has been achieved. The results from monitoring the recombination point to an important influence of the solvent matrix on the recombination rates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02458917
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  • 8
    Electronic Resource
    Electronic Resource
    Low temperature study of myoglobin-ligand rebinding kinetics with Mössbauer spectroscopy (1997)
    Springer
    European biophysics journal 26 (1997), S. 227-237 
    Details
    ISSN: 1432-1017
    Keywords: Key words Carbonmonoxy-Myoglobin ; Recombination kinetics ; Mössbauer spectroscopy ; Scaling law ; Activated tunneling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract We have studied the recombination kinetics of carboxymyoglobin (after photodissociation of the CO ligand) by Mössbauer spectroscopy for temperatures in the range 4.2 – 60 K. The observed kinetics display non-exponential behaviour which was monitored over periods of a few days. It is shown that the time dependence of the kinetics can be reduced to a single universal function of the temperature-dependent variable (t/τ 1/2(T)) β(T) . The half-decay time τ 1/2(T) and the scaling parameter β(T) are analysed for the presence of tunneling effects. The non-Arrhenius temperature dependence of the half-decay time below 60 K is interpreted as activated tunneling in models with an Eckart barrier or a fluctuating barrier.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002490050075
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  • 9
    Electronic Resource
    Electronic Resource
    Nematic-smectic biphase of a main-chain liquid crystalline polyether (1995)
    Springer
    Journal of materials science 30 (1995), S. 2023-2028 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Shear alignment studies of a semirigid, main-chain liquid crystalline polymer found very different behaviour within a low temperature, birefringent phase than within the higher temperature, nematic phase. Using X-ray scattering techniques and thermal analysis, the low temperature “intermediate” phase was identified as a nematic phase with approximately 5–10 vol% smectic cophase. Unique thermal characteristics of the intermediate phase are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00353028
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  • 10
    Electronic Resource
    Electronic Resource
    Block copolymers containing liquid crystalline segments (1997)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 48 (1997), S. 405-422 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The interest in block copolymers containing liquid crystalline (LC) segments is due to the resulting interplay between mesophase formation and the microphase structure which creates opportunities in tailoring their nanostructure. This review summarizes recent literature reporting LC-coil block copolymers with well controlled microphase morphologies produced using living methods. Developing applications are also described and include LC displays and low energy surfaces.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1997.010481001
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