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  • 1
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    NF-AT-Driven interleukin-4 transcription potentiated by NIP45 (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-13
    Description: The induction of cytokine gene transcription is mediated in part by the nuclear factor of activated T cells (NF-AT). Factors involved in the mechanisms of NF-AT-mediated transcription are not well understood. A nuclear factor that interacted with the Rel homology domain (RHD) of NF-ATp was identified with the use of a two-hybrid interaction trap. Designated NIP45 (NF-AT interacting protein), it has minimal similarity to any known genes. Transcripts encoding this factor were enriched in lymphoid tissues and testes. NIP45 synergized with NF-ATp and the proto-oncogene c-Maf to activate the interleukin-4 (IL-4) cytokine promoter; transient overexpression of NIP45 with NF-ATp and c-maf in B lymphoma cells induced measurable endogenous IL-4 protein production. The identification of NIP45 advances our understanding of gene activation of cytokines, critical mediators of the immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hodge, M R -- Chun, H J -- Rengarajan, J -- Alt, A -- Lieberson, R -- Glimcher, L H -- AI37833/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1903-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Harvard School of Public Health and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8943202" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cell Nucleus/metabolism ; Cloning, Molecular ; DNA-Binding Proteins/*metabolism ; Genes, Reporter ; Humans ; Interleukin-4/*genetics ; *Intracellular Signaling Peptides and Proteins ; Male ; Molecular Sequence Data ; NFATC Transcription Factors ; Nuclear Proteins/chemistry/genetics/*metabolism ; Promoter Regions, Genetic ; Recombinant Fusion Proteins/metabolism ; Spleen/metabolism ; Testis/metabolism ; Thymus Gland/metabolism ; Transcription Factors/*metabolism ; *Transcriptional Activation ; Transfection ; Tumor Cells, Cultured
    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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    ISO Mid-Infrared Observations of Giant HII Regions in M33 (1999)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: We present Infrared Space Observatory Camera (ISOCAM) Circular Variable Filter scans of three giant HII regions in M33. IC 133, NGC 595, and CC 93 span a wide range of metallicity, luminosity, nebular excitation, and infrared excess; three other emission regions (CC 43, CC 99, and a region to the northeast of the core of NGC 595) are luminous enough in the mid-infrared to be detected in the observed fields. ISOCAM CVF observations provide spatially resolved observations (5'') of 151 wavelengths between 5.1 and 16.5 microns with a spectral resolution R = 35 to 50. We observe atomic emission lines ([Ne II], [Ne III], and [S IV]), several "unidentified infrared bands" (UIBs; 6.2, 7.7, 8.6, 11.3, 12.0, and 12.7 microns), and in some cases a continuum which rises steeply at longer wavelengths. We conclude that the spectra of these three GHRs are well explained by combinations of ionized gas, PAHs, and very small grains in various proportions and with different spatial distributions. Comparisons between observed ratios of the various UIBs with model ratios indicate that the PAHs in all three of the GHRs are dehydrogenated and that the small PAHs have been destroyed in IC 133 but have survived in NGC 595 and CC 93. The [Ne III]/[Ne II] ratios observed in IC 133 and NGC 595 are consistent with their ages of 5 and 4.5 Myr, respectively; the deduced ionization parameter is higher in IC 133, consistent with its more compact region of emission.
    Keywords: Astronomy
    Type: May 30, 1999 - Jun 03, 1999; Chicago, IL; United States
    Format: text
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