Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Publication Date: 2012-06-30
    Description: Wood is a major pool of organic carbon that is highly resistant to decay, owing largely to the presence of lignin. The only organisms capable of substantial lignin decay are white rot fungi in the Agaricomycetes, which also contains non-lignin-degrading brown rot and ectomycorrhizal species. Comparative analyses of 31 fungal genomes (12 generated for this study) suggest that lignin-degrading peroxidases expanded in the lineage leading to the ancestor of the Agaricomycetes, which is reconstructed as a white rot species, and then contracted in parallel lineages leading to brown rot and mycorrhizal species. Molecular clock analyses suggest that the origin of lignin degradation might have coincided with the sharp decrease in the rate of organic carbon burial around the end of the Carboniferous period.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Floudas, Dimitrios -- Binder, Manfred -- Riley, Robert -- Barry, Kerrie -- Blanchette, Robert A -- Henrissat, Bernard -- Martinez, Angel T -- Otillar, Robert -- Spatafora, Joseph W -- Yadav, Jagjit S -- Aerts, Andrea -- Benoit, Isabelle -- Boyd, Alex -- Carlson, Alexis -- Copeland, Alex -- Coutinho, Pedro M -- de Vries, Ronald P -- Ferreira, Patricia -- Findley, Keisha -- Foster, Brian -- Gaskell, Jill -- Glotzer, Dylan -- Gorecki, Pawel -- Heitman, Joseph -- Hesse, Cedar -- Hori, Chiaki -- Igarashi, Kiyohiko -- Jurgens, Joel A -- Kallen, Nathan -- Kersten, Phil -- Kohler, Annegret -- Kues, Ursula -- Kumar, T K Arun -- Kuo, Alan -- LaButti, Kurt -- Larrondo, Luis F -- Lindquist, Erika -- Ling, Albee -- Lombard, Vincent -- Lucas, Susan -- Lundell, Taina -- Martin, Rachael -- McLaughlin, David J -- Morgenstern, Ingo -- Morin, Emanuelle -- Murat, Claude -- Nagy, Laszlo G -- Nolan, Matt -- Ohm, Robin A -- Patyshakuliyeva, Aleksandrina -- Rokas, Antonis -- Ruiz-Duenas, Francisco J -- Sabat, Grzegorz -- Salamov, Asaf -- Samejima, Masahiro -- Schmutz, Jeremy -- Slot, Jason C -- St John, Franz -- Stenlid, Jan -- Sun, Hui -- Sun, Sheng -- Syed, Khajamohiddin -- Tsang, Adrian -- Wiebenga, Ad -- Young, Darcy -- Pisabarro, Antonio -- Eastwood, Daniel C -- Martin, Francis -- Cullen, Dan -- Grigoriev, Igor V -- Hibbett, David S -- New York, N.Y. -- Science. 2012 Jun 29;336(6089):1715-9. doi: 10.1126/science.1221748.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biology Department, Clark University, Worcester, MA 01610, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22745431" target="_blank"〉PubMed〈/a〉
    Keywords: Basidiomycota/classification/*enzymology/*genetics ; Bayes Theorem ; *Evolution, Molecular ; *Genome, Fungal ; Indoles ; Lignin/*metabolism ; Peroxidases/*genetics/metabolism ; Wood/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Signatur Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The morphology of chromosomes of two species of Silphidae and five species of Staphylinidae and the behaviour of chromosomes in mitosis and meiosis were studied. These staphylinoid beetles did not exhibit a ‘modal karyotype’. However, Xyp was found to be the most common male sex-chromosome mechanism althoughPhilonthus varius andQuedius fuliginosus possessed XO. Dicentric chromosomes were found inPhilonthus fuscipennis. Dicentrics were also found in both European and one East Siberian populations ofPhosphuga atrata. In the seven species, the diploid chromosome number ranged from 2n=24 to 2n=56. The evolution of karyotype and the interrelationships between species are dicussed.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Phanerochaete chrysosporium (ME-446) mineralized 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) in high N medium and in malt extract medium in which lignin peroxidases (LIPs) and manganese peroxidases (MNPs) are not produced; furthermore,per mutant of ME-446, which lacks LIPs and MNPs, mineralized 2,4,5-T as well as the wild type. These results indicate that LIPs and MNPs are not required for 2,4,5-T degradation byP. chrysosporium.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report the first results on the determination of the ionization states of oxygen ions in the anomalous cosmic rays (ACR) from the measurements of their flux in the cosmic-ray experiment in Spacelab-3 (SL-3) mission of NASA flown at 350 km altitude during 29 April–6 May, 1985. The detectors used were specially prepared CR-39 plastics of very high sensitivity for recording tracks of ions withZ〉2. The measured orbit averaged flux of ACR oxygen is (2.9±1.3)×10−4 particles m−2sr−1s−1 (MeV N−1) at an energy of 23 MeV N−1. We made an independent estimate of the expected ACR oxygen flux at SL-3 orbit from interplanetary data and compared this with the measured flux to infer the ionization states of ACR oxygen ions. The flux and energy spectra of ACR oxygen at 1 AU outside the magnetosphere is obtained from the data of Voyager-2, during the same epoch as the SL-3 flight, and using the measured radial intensity gradient of 15%/AU for ACR oxygen between 1–17 AU. We calculate the geomagnetic transmission factors for ACR oxygen ions of charge states O+1, O+2, etc., from the known cut-off rigidities in the world grid and using the SL-3 trajectories for 116 orbits in the 6-day mission to obtain the expected flux at SL-3 for different charge states. When these flux values are compared with our measured flux, the averge ionization state of ACR oxygen ions in the energy interval of 20–26 MeV N−1 is obtained as O+1.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Genetica 44 (1973), S. 288-296 
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Chromosomes have been studied in seven species of bruchids belonging to the subfamilies Bruchinae and Amblycerinae. The diploid number of chromosomes is twenty in Bruchidius multilineolatus (Pic.), B. aureus Arora, B. saundersi (Jek.) and Conicobruchus indicus (Pic.); Bruchus pisorum L. and Specularius maindroni (Pic.) possess a diploid number of twenty-two whereas Spermophagus latescenta Arora has a diploid number of thirty-two. The male sex chromosome mechanism, however, is uniformly Xyp in all these species. The usual diplotene and diakinesis stages are not discrete in Bruchidius multilineolatus and Specularius maindroni. Instead, a “diffuse stage” is observed. A sticky anaphase bridge has also been observed in some cells of Bruchidius aureus.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 6
    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: Selected portions of the S0 and T1 potential energy surfaces of acetaldehyde surveyed in our earlier studies have been reexamined. The assumption of the additivity of basis-set polarization and of electron correlation effects used extensively in our earlier work on acetaldehyde has been tested through explicit polarized basis-set electron-correlation calculations. The “additivity assumption” introduces average absolute errors in energy differences of only 1.9 (MP3) to 3.4 (MP2) kcal mol-1 in seven comparisons. The effects of using 6-31G** SCF optimized geometries as opposed to single-point calculations on 3-21G SCF structures (6-31G**//3-21G) as in our previous papers were examined. In six comparisons, the average absolute error in relative SCF energies introduced by the use of the 3-21G geometries rather than the fully consistent 6-31G- ones was only 0.3 kcal mole-1. After a uniform scaling procedure, comparisons of the 6-31G** and 3-21G calculated vibrational frequencies with experiment for CH3CHO (S0), CH4, and CO (20 comparisons) yielded absolute differences of 41 cm-1 (6-31G**) and 57 cm-1 (3-21G). All these more elaborate calculations support for the specific case of acetaldehyde and various minima and transition states of relevance to its photochemistry, the commonly used and practically important approximations (e.g., additivity) made in our earlier studies.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 7
    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: The nonplanarity of a peptide unit has been studied by the ab initio method (GAUSSIAN 76) considering both the pyramidal structure of nitrogen and the variation of the ω angle for the N-methyl-acetamide and N-ethyl-acetamide in their cis and trans conformations. Several semiempirical methods have also been used for the sake of completeness of this work. All methods except CNDO and PCILO support a nonpyramidal structure for the nitrogen. The distortions of the planarity of the peptide unit show for both cis and trans conformations of the model compounds a significant asymmetric shift of the minimum on the energy curve for the ω rotation.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 29 (1986), S. 1283-1290 
    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: Bond orders and hybrid populations have been calculated from the density matrix localized in molecular space using similarity transformation for some fluorobenzene with the minimal basis set using Gaussian series of program. The ab initio bond orders and hybrid populations have been compared with the semiempirical calculations on this set of molecules. Also, these bond orders have been used in Coulson's bond order-bond length relationship to estimate bond lengths. The present calculations suggest that the qualitative predictions of molecular geometries are possible from these bond orders.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 31 (1988), S. 414-417 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 0040-4020
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...