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  • Chemistry  (75)
  • Humans  (23)
  • AIRCRAFT DESIGN, TESTING AND PERFORMANCE
  • 2000-2004  (13)
  • 1990-1994  (85)
  • 1
    Electronic Resource
    Electronic Resource
    Production of indole alkaloids by surface immobilized C. roseus cells (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 35 (1990), S. 660-667 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A technique was developed to surface immobilize plant cells and was scaled up in laboratory size bioreactors. This technique was shown not to hinder the biosynthetic potential of Catharanthus roseus immobilized cells and to induce a partial release (300 μg/L) of serpentine into the culture medium contrary to suspension cultured cells. The release pattern seemed to follow the biosynthesis trends of the product. This release mechanism could be stimulated by a factor of 10 within 2 h by increasing the pH of the culture from 5.0 to 5.5.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260350703
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Development of bioreactors for the culture of surface immobilized plant cells (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 35 (1990), S. 702-711 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The scaleup of the technique of plant cell surface immobilization was performed successfully in specifically designed laboratory size bioreactors. The immobilizing matrix was formed into a vertically wound spiral providing for a high immobilizing area-to-volume ratio (0.8-1.2 cm-1). A modified airlift and a mechanically stirred vessel delivered a best bioreactor performance characterized by low biomass frothing and highly efficient plant cell attachment and retention (≥96%). The growth of Catharanthus roseus cells investigated in these bioreactors was found not to be mass transfer limited. It required mild mixing and aeration levels (kLa ∼ 10-15 h-1). The biomass formation pattern of surface immobilized plant cells generally exhibited a linear growth phase followed by a stationary phase characterized by the presence of residual carbohydrates in the medium, contrary to suspension cultures. This behavior was found to depend on the plant cell type and/or line cultured, as well as on the inoculum age. The space restriction and unidirectional growth of the SIPC biofilm combined with the limited availability of essential intracellular nutrients rapidly accumulated from the medium by the stationary phase inoculated plant cells all likely contributed to the culture behavior.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260350707
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  • 3
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    HIFalpha targeted for VHL-mediated destruction by proline hydroxylation: implications for O2 sensing (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-09
    Description: HIF (hypoxia-inducible factor) is a transcription factor that plays a pivotal role in cellular adaptation to changes in oxygen availability. In the presence of oxygen, HIF is targeted for destruction by an E3 ubiquitin ligase containing the von Hippel-Lindau tumor suppressor protein (pVHL). We found that human pVHL binds to a short HIF-derived peptide when a conserved proline residue at the core of this peptide is hydroxylated. Because proline hydroxylation requires molecular oxygen and Fe(2+), this protein modification may play a key role in mammalian oxygen sensing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ivan, M -- Kondo, K -- Yang, H -- Kim, W -- Valiando, J -- Ohh, M -- Salic, A -- Asara, J M -- Lane, W S -- Kaelin , W G Jr -- New York, N.Y. -- Science. 2001 Apr 20;292(5516):464-8. Epub 2001 Apr 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute and Brigham and Women's Hospital, Howard Hughes Medical Institute, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11292862" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Cell Hypoxia ; Cell Line ; Cobalt/pharmacology ; Deferoxamine/pharmacology ; Humans ; Hydroxylation ; Hydroxyproline/*metabolism ; *Ligases ; Mass Spectrometry ; Mice ; Molecular Sequence Data ; Oxygen/*physiology ; Protein Structure, Tertiary ; Proteins/*metabolism ; Recombinant Fusion Proteins/metabolism ; Trans-Activators/chemistry/genetics/*metabolism ; Transcription Factors/*metabolism ; Tumor Cells, Cultured ; *Tumor Suppressor Proteins ; *Ubiquitin-Protein Ligases ; Ubiquitins/metabolism ; Von Hippel-Lindau Tumor Suppressor Protein
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Parasitology. Drugs to combat tropical protozoan parasites (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gelb, Michael H -- Hol, Wim G J -- New York, N.Y. -- Science. 2002 Jul 19;297(5580):343-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Chemistry, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12130767" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antimalarials/chemistry/pharmacology/therapeutic use ; *Antiprotozoal Agents/chemistry/pharmacology/therapeutic use ; Chagas Disease/drug therapy/parasitology ; Chemistry, Pharmaceutical ; Combinatorial Chemistry Techniques ; Computational Biology ; Databases, Factual ; Drug Design ; Drug Resistance ; Genomics ; Humans ; Leishmania/drug effects/genetics/metabolism ; Leishmaniasis/drug therapy/parasitology ; Malaria/drug therapy/parasitology ; Plasmodium falciparum/drug effects/genetics/metabolism ; Plasmodium vivax/drug effects/genetics ; *Trypanocidal Agents/chemistry/pharmacology/therapeutic use ; Trypanosoma brucei brucei/drug effects/genetics/metabolism ; Trypanosoma cruzi/drug effects/genetics/metabolism ; Trypanosomiasis, African/drug therapy/parasitology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Location of a major susceptibility locus for familial schizophrenia on chromosome 1q21-q22 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-28
    Description: Schizophrenia is a complex disorder, and there is substantial evidence supporting a genetic etiology. Despite this, prior attempts to localize susceptibility loci have produced predominantly suggestive findings. A genome-wide scan for schizophrenia susceptibility loci in 22 extended families with high rates of schizophrenia provided highly significant evidence of linkage to chromosome 1 (1q21-q22), with a maximum heterogeneity logarithm of the likelihood of linkage (lod) score of 6.50. This linkage result should provide sufficient power to allow the positional cloning of the underlying susceptibility gene.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3787922/" 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/PMC3787922/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brzustowicz, L M -- Hodgkinson, K A -- Chow, E W -- Honer, W G -- Bassett, A S -- 53216/Canadian Institutes of Health Research/Canada -- K08 MH01392/MH/NIMH NIH HHS/ -- N01-HG-65403/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2000 Apr 28;288(5466):678-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102, USA. brzustowicz@axon.rutgers.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10784452" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; Chromosomes, Human, Pair 1/*genetics ; Computer Simulation ; Female ; Genes, Dominant ; Genes, Recessive ; Genetic Heterogeneity ; Genetic Linkage ; Genetic Markers ; *Genetic Predisposition to Disease ; Humans ; Likelihood Functions ; Lod Score ; Male ; Models, Genetic ; Pedigree ; Schizophrenia/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    A synthetic HIV-1 protease inhibitor with antiviral activity arrests HIV-like particle maturation (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-01-26
    Description: A synthetic peptidemimetic substrate of the human immunodeficiency virus 1 (HIV-1) protease with a nonhydrolyzable pseudodipeptidyl insert at the protease cleavage site was prepared. The peptide U-81749 inhibited recombinant HIV-1 protease in vitro (inhibition constant Ki of 70 nanomolar) and HIV-1 replication in human peripheral blood lymphocytes (inhibitory concentration IC50 of 0.1 to 1 micromolar). Moreover, 10 micromolar concentrations of U-81749 significantly inhibited proteolysis of the HIV-1 gag polyprotein (p55) to the mature viral structural proteins p24 and p17 in cells infected with a recombinant vaccinia virus expressing the HIV-1 gag-pol genes. The HIV-1 like particles released from inhibitor-treated cells contained almost exclusively p55 and other gag precursors, but not p24. Incubation of HIV-like particles recovered from drug-treated cultures in drug-free medium indicated that inhibition of p55 proteolysis was at least partially reversible, suggesting that U-81749 was present within the particles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McQuade, T J -- Tomasselli, A G -- Liu, L -- Karacostas, V -- Moss, B -- Sawyer, T K -- Heinrikson, R L -- Tarpley, W G -- New York, N.Y. -- Science. 1990 Jan 26;247(4941):454-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Infectious Disease Research Unit, Upjohn Company, Kalamazoo, MI 49001.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2405486" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antiviral Agents/*pharmacology ; DNA, Viral/genetics ; Endopeptidases/*metabolism ; Fusion Proteins, gag-pol/genetics/metabolism ; Gene Products, gag/metabolism ; HIV Protease ; HIV-1/*drug effects/genetics/physiology ; Humans ; Lymphocytes/microbiology ; Molecular Sequence Data ; Molecular Structure ; Oligopeptides/*pharmacology ; Protease Inhibitors/*pharmacology ; Protein Precursors/metabolism ; RNA, Viral/metabolism ; Transfection ; Virus Replication/drug effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Atomic structure of the cubic core of the pyruvate dehydrogenase multienzyme complex (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-03-20
    Description: The highly symmetric pyruvate dehydrogenase multienzyme complexes have molecular masses ranging from 5 to 10 million daltons. They consist of numerous copies of three different enzymes: pyruvate dehydrogenase, dihydrolipoyl transacetylase, and lipoamide dehydrogenase. The three-dimensional crystal structure of the catalytic domain of Azotobacter vinelandii dihydrolipoyl transacetylase has been determined at 2.6 angstrom (A) resolution. Eight trimers assemble as a hollow truncated cube with an edge of 125 A, forming the core of the multienzyme complex. Coenzyme A must enter the 29 A long active site channel from the inside of the cube, and lipoamide must enter from the outside. The trimer of the catalytic domain of dihydrolipoyl transacetylase has a topology identical to chloramphenicol acetyl transferase. The atomic structure of the 24-subunit cube core provides a framework for understanding all pyruvate dehydrogenase and related multienzyme complexes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mattevi, A -- Obmolova, G -- Schulze, E -- Kalk, K H -- Westphal, A H -- de Kok, A -- Hol, W G -- New York, N.Y. -- Science. 1992 Mar 20;255(5051):1544-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of Groningen, The Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1549782" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Azotobacter vinelandii/enzymology ; Chloramphenicol O-Acetyltransferase/genetics ; Humans ; Models, Molecular ; Molecular Sequence Data ; Molecular Structure ; Pyruvate Dehydrogenase Complex/*chemistry/genetics ; Sequence Homology, Nucleic Acid
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Regulation of proteolysis at the neutrophil-substrate interface by secretory leukoprotease inhibitor (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-07-13
    Description: Human neutrophils can initiate the rapid degradation of extracellular matrix macromolecules by localizing the destructive process to sites of cell-substrate contact. Although plasma and its filtrates contain multiple proteinase inhibitors, these inhibitors did not prevent neutrophils from attacking either underlying fibronectin or elastin. However, subjacent substrates could be protected from neutrophils by recombinant secretory leukoprotease inhibitor, a structurally unique serine proteinase inhibitor whose natural counterpart is normally confined to human mucous secretions. The identification of this extravascular proteinase inhibitor as a potent regulator of subjacent proteolysis could lead to the development of a new class of anti-inflammatory therapeutics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice, W G -- Weiss, S J -- AI 21301/AI/NIAID NIH HHS/ -- HL 28024/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1990 Jul 13;249(4965):178-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Simpson Memorial Research Institute, University of Michigan, Ann Arbor 48109.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2371565" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Adhesion ; Cells, Cultured ; Elastin/metabolism ; Extracellular Matrix/*metabolism ; Fibronectins/metabolism ; Humans ; Neutrophils/*metabolism ; Proteinase Inhibitory Proteins, Secretory ; *Proteins ; Recombinant Proteins/metabolism ; Serine Proteinase Inhibitors/*metabolism ; Solubility
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Optical coherence tomography (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-22
    Description: A technique called optical coherence tomography (OCT) has been developed for noninvasive cross-sectional imaging in biological systems. OCT uses low-coherence interferometry to produce a two-dimensional image of optical scattering from internal tissue microstructures in a way that is analogous to ultrasonic pulse-echo imaging. OCT has longitudinal and lateral spatial resolutions of a few micrometers and can detect reflected signals as small as approximately 10(-10) of the incident optical power. Tomographic imaging is demonstrated in vitro in the peripapillary area of the retina and in the coronary artery, two clinically relevant examples that are representative of transparent and turbid media, respectively.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4638169/" 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/PMC4638169/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, D -- Swanson, E A -- Lin, C P -- Schuman, J S -- Stinson, W G -- Chang, W -- Hee, M R -- Flotte, T -- Gregory, K -- Puliafito, C A -- 1-R01-GM35459-06/GM/NIGMS NIH HHS/ -- R01 GM035459/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Nov 22;254(5035):1178-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1957169" target="_blank"〉PubMed〈/a〉
    Keywords: Coronary Disease/diagnosis ; Coronary Vessels/pathology ; Humans ; Image Processing, Computer-Assisted ; In Vitro Techniques ; Retinal Diseases/diagnosis/pathology ; Tomography/*methods
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Predictive identification of exonic splicing enhancers in human genes (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-13
    Description: Specific short oligonucleotide sequences that enhance pre-mRNA splicing when present in exons, termed exonic splicing enhancers (ESEs), play important roles in constitutive and alternative splicing. A computational method, RESCUE-ESE, was developed that predicts which sequences have ESE activity by statistical analysis of exon-intron and splice site composition. When large data sets of human gene sequences were used, this method identified 10 predicted ESE motifs. Representatives of all 10 motifs were found to display enhancer activity in vivo, whereas point mutants of these sequences exhibited sharply reduced activity. The motifs identified enable prediction of the splicing phenotypes of exonic mutations in human genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fairbrother, William G -- Yeh, Ru-Fang -- Sharp, Phillip A -- Burge, Christopher B -- 1 R01 HG02439-01/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2002 Aug 9;297(5583):1007-13. Epub 2002 Jul 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Center for Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12114529" target="_blank"〉PubMed〈/a〉
    Keywords: Computational Biology ; Consensus Sequence ; DNA, Complementary ; Databases, Nucleic Acid ; *Exons ; *Genes ; *Genome, Human ; Humans ; Hypoxanthine Phosphoribosyltransferase/genetics ; Introns ; Oligonucleotides/genetics ; Point Mutation ; *RNA Splicing ; *Regulatory Sequences, Nucleic Acid ; Sequence Analysis, DNA
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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