دورية أكاديمية
Expression of novel "LOCGEF" isoforms of ARHGEF18 in eosinophils.
| العنوان: | Expression of novel "LOCGEF" isoforms of ARHGEF18 in eosinophils. |
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| المؤلفون: | Turton KB; Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA., Wilkerson EM; Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA., Hebert AS; Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA., Fogerty FJ; Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA.; Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA., Schira HM; Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA., Botros FE; Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA., Coon JJ; Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA.; Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA., Mosher DF; Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA.; Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA. |
| المصدر: | Journal of leukocyte biology [J Leukoc Biol] 2018 Jul; Vol. 104 (1), pp. 135-145. Date of Electronic Publication: 2018 Mar 30. |
| نوع المنشور: | Journal Article; Research Support, N.I.H., Extramural |
| اللغة: | English |
| بيانات الدورية: | Publisher: Oxford University Press Country of Publication: United States NLM ID: 8405628 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1938-3673 (Electronic) Linking ISSN: 07415400 NLM ISO Abbreviation: J Leukoc Biol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2023- : Oxford : Oxford University Press Original Publication: New York : Alan R. Liss, c1984- |
| مواضيع طبية MeSH: | Cell Polarity/*physiology , Eosinophils/*metabolism , Rho Guanine Nucleotide Exchange Factors/*biosynthesis, Humans ; Protein Isoforms/metabolism ; Proteomics |
| مستخلص: | Genomic, transcriptomic and proteomic databases indicate that the N-terminal 322 residues encoded by the presumptive LOC100996504 gene, which is adjacent to the ARHGEF18 guanine nucleotide exchange factor gene on chromosome 19, constitute the N-terminal portion of a 1361-residue isoform of ARHGEF18, dubbed LOCGEF-X3. LOCGEF-X3 arises from the use of a leukocyte-specific alternative transcriptional start site and splicing that bypasses the initial noncoding exon of the canonical 1015-residue ARHGEF18 isoform, p114. Eosinophil LOCGEF-X3 was amplified and cloned, recombinant LOCGEF-X3 was expressed, and anti-ARHGEF18 antibody was found to recognize a band in immunoblots of eosinophil lysates that co-migrates with recombinant LOCGEF-X3. PCR of eosinophils revealed minor amounts of transcripts for X4 and X5 isoforms of LOCGEF that arise from differential splicing and differ from the X3 isoform at their extreme N-termini. No p114 transcript or protein band was detected in eosinophils. Immunostaining with anti-ARHGEF18 antibody revealed relocalization of LOCGEF and RHOA from the periphery of round unstimulated eosinophils to the 2 poles of eosinophils polarized by treatment with IL5, CCL11, or IL33 in suspension. Canonical p114 ARHGEF18 has been implicated in maintenance of epithelial cell polarity. We suggest that the "LOC" portion of LOCGEF, which is unlike any other protein domain, has unique functions in control of polarity in activated eosinophils and other leukocytes. (©2018 Society for Leukocyte Biology.) |
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| معلومات مُعتمدة: | P01 HL088594 United States HL NHLBI NIH HHS; R01 AI125390 United States AI NIAID NIH HHS; T32 HL007899 United States HL NHLBI NIH HHS |
| فهرسة مساهمة: | Keywords: ARHGEF18; LOC100996504; alternative transcriptional start; granulocyte; guanine nucleotide exchange factor; p114-GEF |
| المشرفين على المادة: | 0 (ARHGEF18 protein, human) 0 (Protein Isoforms) 0 (Rho Guanine Nucleotide Exchange Factors) |
| تواريخ الأحداث: | Date Created: 20180331 Date Completed: 20190508 Latest Revision: 20190701 |
| رمز التحديث: | 20221213 |
| مُعرف محوري في PubMed: | PMC6013370 |
| DOI: | 10.1002/JLB.2MA1017-418RR |
| PMID: | 29601110 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1938-3673 |
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| DOI: | 10.1002/JLB.2MA1017-418RR |