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  • 1
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    Protein Engineering of the N-Terminus of NEMO: Structure Stabilization and Rescue of IKKβ Binding (2014)
    American Chemical Society (ACS)
    Details
    Publication Date: 2014-10-24
    Description: Biochemistry DOI: 10.1021/bi500861x
    Print ISSN: 0006-2960
    Electronic ISSN: 1520-4995
    Topics: Biology , Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
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  • 2
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    Engineering hepatocyte growth factor fragments with high stability and activity as Met receptor agonists and antagonists [Applied Biological Sciences] (2011)
    National Academy of Sciences
    Details
    Publication Date: 2011-08-10
    Description: The Met receptor tyrosine kinase and its ligand hepatocyte growth factor (HGF) play an important role in mediating both tumor progression and tissue regeneration. The N-terminal and first Kringle domains (NK1) of HGF comprise a naturally occurring splice variant that retains the ability to activate the Met receptor. However, NK1 is a weak agonist and is relatively unstable, limiting its therapeutic potential. Here, we engineered NK1 mutants with improved biochemical and biophysical properties that function as Met receptor agonists or antagonists. We first engineered NK1 for increased stability and recombinant expression yield using directed evolution. The NK1 variants isolated from our library screens acted as weak Met receptor antagonists due to a mutation at the NK1 homodimerization interface. We introduced point mutations that restored this NK1 homodimerization interface to create an agonistic ligand, or that further disrupted this interface to create more effective antagonists. The rationally engineered antagonists exhibited melting temperatures up to approximately 64 °C, a 15 °C improvement over antagonists derived from wild-type NK1, and approximately 40-fold improvement in expression yield. Next, we created disulfide-linked NK1 homodimers through introduction of an N-terminal cysteine residue. These covalent dimers exhibited nearly an order of magnitude improved agonistic activity compared to wild-type NK1, approaching the activity of full-length HGF. Moreover, covalent NK1 dimers formed from agonistic or antagonistic monomeric subunits elicited similar activity, further signifying that NK1 dimerization mediates agonistic activity. These engineered NK1 proteins are promising candidates for therapeutic development and will be useful tools for further exploring determinants of Met receptor activation.
    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
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    BRCA1 mutations in primary breast and ovarian carcinomas (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-07
    Description: Loss of heterozygosity data from familial tumors suggest that BRCA1, a gene that confers susceptibility to ovarian and early-onset breast cancer, encodes a tumor suppressor. The BRCA1 region is also subject to allelic loss in sporadic breast and ovarian cancers, an indication that BRCA1 mutations may occur somatically in these tumors. The BRCA1 coding region was examined for mutations in primary breast and ovarian tumors that show allele loss at the BRCA1 locus. Mutations were detected in 3 of 32 breast and 1 of 12 ovarian carcinomas; all four mutations were germline alterations and occurred in early-onset cancers. These results suggest that mutation of BRCA1 may not be critical in the development of the majority of breast and ovarian cancers that arise in the absence of a mutant germline allele.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Futreal, P A -- Liu, Q -- Shattuck-Eidens, D -- Cochran, C -- Harshman, K -- Tavtigian, S -- Bennett, L M -- Haugen-Strano, A -- Swensen, J -- Miki, Y -- CA48711/CA/NCI NIH HHS/ -- CA55914/CA/NCI NIH HHS/ -- CA56749/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Oct 7;266(5182):120-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939630" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Age of Onset ; Alleles ; BRCA1 Protein ; Base Sequence ; Breast Neoplasms/*genetics ; Chromosomes, Human, Pair 17 ; Female ; *Genes, Tumor Suppressor ; Genetic Predisposition to Disease ; *Germ-Line Mutation ; Heterozygote ; Humans ; Middle Aged ; Molecular Sequence Data ; Neoplasm Proteins/*genetics ; Ovarian Neoplasms/*genetics ; Transcription Factors/*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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  • 4
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    A strong candidate for the breast and ovarian cancer susceptibility gene BRCA1 (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-07
    Description: A strong candidate for the 17q-linked BRCA1 gene, which influences susceptibility to breast and ovarian cancer, has been identified by positional cloning methods. Probable predisposing mutations have been detected in five of eight kindreds presumed to segregate BRCA1 susceptibility alleles. The mutations include an 11-base pair deletion, a 1-base pair insertion, a stop codon, a missense substitution, and an inferred regulatory mutation. The BRCA1 gene is expressed in numerous tissues, including breast and ovary, and encodes a predicted protein of 1863 amino acids. This protein contains a zinc finger domain in its amino-terminal region, but is otherwise unrelated to previously described proteins. Identification of BRCA1 should facilitate early diagnosis of breast and ovarian cancer susceptibility in some individuals as well as a better understanding of breast cancer biology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miki, Y -- Swensen, J -- Shattuck-Eidens, D -- Futreal, P A -- Harshman, K -- Tavtigian, S -- Liu, Q -- Cochran, C -- Bennett, L M -- Ding, W -- CA-48711/CA/NCI NIH HHS/ -- CA-54936/CA/NCI NIH HHS/ -- CA-55914/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Oct 7;266(5182):66-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Informatics, University of Utah Medical Center, Salt Lake City 84132.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7545954" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Alternative Splicing ; Amino Acid Sequence ; Animals ; BRCA1 Protein ; Breast Neoplasms/*genetics ; *Chromosomes, Human, Pair 17 ; Female ; *Genes, Tumor Suppressor ; Genetic Predisposition to Disease ; Germ-Line Mutation ; Haplotypes ; Humans ; Lod Score ; Male ; Molecular Sequence Data ; *Mutation ; Neoplasm Proteins/chemistry/*genetics/physiology ; Ovarian Neoplasms/*genetics ; Pedigree ; Phenotype ; Transcription Factors/chemistry/*genetics/physiology ; Zinc Fingers
    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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  • 5
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    The limits of earthquake early warning: Timeliness of ground motion estimates (2018)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2018-03-22
    Description: The basic physics of earthquakes is such that strong ground motion cannot be expected from an earthquake unless the earthquake itself is very close or has grown to be very large. We use simple seismological relationships to calculate the minimum time that must elapse before such ground motion can be expected at a distance from the earthquake, assuming that the earthquake magnitude is not predictable. Earthquake early warning (EEW) systems are in operation or development for many regions around the world, with the goal of providing enough warning of incoming ground shaking to allow people and automated systems to take protective actions to mitigate losses. However, the question of how much warning time is physically possible for specified levels of ground motion has not been addressed. We consider a zero-latency EEW system to determine possible warning times a user could receive in an ideal case. In this case, the only limitation on warning time is the time required for the earthquake to evolve and the time for strong ground motion to arrive at a user’s location. We find that users who wish to be alerted at lower ground motion thresholds will receive more robust warnings with longer average warning times than users who receive warnings for higher ground motion thresholds. EEW systems have the greatest potential benefit for users willing to take action at relatively low ground motion thresholds, whereas users who set relatively high thresholds for taking action are less likely to receive timely and actionable information.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
    Electronic Resource
    Electronic Resource
    Recovery of hydrogen fluoride fumes on alumina in aluminum smelting (1974)
    s.l. : American Chemical Society
    Environmental science & technology 8 (1974), S. 63-66 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es60086a005
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    THE DETECTION OF FOREIGN FATS IN LARD AND BUTTER. (1897)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 19 (1897), S. 796-799 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja02084a007
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  • 8
    Electronic Resource
    Electronic Resource
    THE INVERSION OF SUCROSE BY ACID MERCURIC NITRATE. (1907)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 29 (1907), S. 555-556 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01958a016
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  • 9
    Electronic Resource
    Electronic Resource
    THE ESTIMATION OF FAT IN INFANT AND INVALID FOODS. (1905)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 27 (1905), S. 906-909 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01985a009
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  • 10
    Electronic Resource
    Electronic Resource
    The Kinetics of the Decomposition of Trichloroacetic Acid in Formamide-Water Mixtures (1947)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 69 (1947), S. 2987-2988 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01204a015
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