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  • Cleavase I  (1)
  • Computational Chemistry and Molecular Modeling  (1)
  • 1
    ISSN: 1572-9818
    Keywords: CFLP ; Cleavase I ; Phaseolus ; phylogeny ; ptDNA intergenic regions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The CFLP methodology was applied for Cleavase I site detection within ptDNA intergenic regions (atpB-rbcL and rps14-psaB) at both interspecific and intraspecific levels in the genus Phaseolus. Optimal Cleavase I reaction temperature was 55 °C and the semi-dry electrophoretic transfer was more efficient than the original capillary one. Cleavase reactions yield a high number of fragments as compared to PCR-RFLP and allowed differentiation within and between landraces and wild forms of the Lima bean (Phaseolus lunatus L.) originating from Andean and Mesoamerican regions of Latin America. From sequencing data and using stemloop program (GCG, Madison), congruent numbers of hairpins/fragments were identified within the sequences, highlighting the robustness of the Cleavase I. Our results pointed out the ubiquity of short conserved motifs amongst a geographically localized group of species. In the vicinity of these motifs, synapomorphic-like substitutions were frequently observed. A phylogenetic tree based on these sequences is congruent with the CFLP pattern as well as with the widely accepted phylogeny of the genus. The usefulness of this new tool as alternative and/or complementary to PCR-RFLP technology on ptDNA is suggested and discussed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 40 (1991), S. 789-796 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Balanced atomic basis sets, at the double-zeta level with d functions, have been developed for the elements Li—Ar within the relativistic effective core potential procedure. The number of primitive functions, their orbital exponents, and the number of contractions were chosen for use in both Hartree-Fock and correlated calculations. Spin-orbit splittings have been obtained using the approximate operator corresponding to relativistic effective potentials and are compared with experimental values.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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