Search Results - (Author, Cooperation:C. W. Lo)
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1Y. Li ; N. T. Klena ; G. C. Gabriel ; X. Liu ; A. J. Kim ; K. Lemke ; Y. Chen ; B. Chatterjee ; W. Devine ; R. R. Damerla ; C. Chang ; H. Yagi ; J. T. San Agustin ; M. Thahir ; S. Anderton ; C. Lawhead ; A. Vescovi ; H. Pratt ; J. Morgan ; L. Haynes ; C. L. Smith ; J. T. Eppig ; L. Reinholdt ; R. Francis ; L. Leatherbury ; M. K. Ganapathiraju ; K. Tobita ; G. J. Pazour ; C. W. Lo
Nature Publishing Group (NPG)
Published 2015Staff ViewPublication Date: 2015-03-26Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Cilia/genetics/*pathology/physiology/ultrasonography ; DNA Mutational Analysis ; Electrocardiography ; Exome/genetics ; Genes, Recessive ; Genetic Testing ; Heart Defects, Congenital/*genetics/*pathology/ultrasonography ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Mutation/genetics ; Signal TransductionPublished by: -
2Rouan, F. ; Lo, C. W. ; Fertala, A. ; Wahl, M. ; Jost, M. ; Rodeck, U. ; Uitto, J. ; Richard, G.
Oxford, UK : Munksgaard International Publishers
Published 2003Staff ViewISSN: 1600-0625Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Abstract: Recently, we identified several missense mutations of the connexin gene GJB3 encoding connexin 31 (Cx31) in erythrokeratodermia variabilis (EKV), an autosomal dominant skin disorder. These mutations include G12D, which replaces a conserved glycine residue in the amino-terminus of Cx31 and is associated with a severe EKV phenotype. In contrast, the biologic relevance of the GJB3 sequence variant R32W located in the first transmembrane domain of Cx31 is disputed. To examine the effects of these sequence variants on Cx31 biogenesis and gap junction activity we expressed wild type and mutant Cx31-Flag constructs in HeLa cells. Using immunostaining, all expression variants were detected in the cytoplasm and in a punctate pattern at the cell surface, indicating that G12D and R32W did not interfere with either protein synthesis or transport to the cell membrane. Similarly, oligomerization into hemichannels appeared not impaired when expressing either Cx31 mutant as assessed by size exclusion chromatography, immunoblotting and immunostaining. However, dye transfer experiments and monitoring of intracellular calcium levels in response to serum stimulation revealed that G12D-Cx31 did not form functional gap junction channels, probably due to incorrect assembly or altered properties of Cx31 channels. In contrast, intercellular coupling between cells expressing R32W-Cx31 was comparable to that of wtCx31, suggesting that R32W is a functionally inconsequential polymorphism of Cx31.Type of Medium: Electronic ResourceURL: -
3Staff View
ISSN: 1432-1777Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Abstract We isolated clones encoding the mouse high-mobility-group (Hmg) chromatin protein, Hmg1, from a 7.5-day mouse embryo cDNA library. The translated amino acid sequence encodes a protein of 24,890 daltons and is identical to previously characterized mouse, rat, and hamster Hmg1. However, comparison of the two mouse Hmg1 cDNA sequences revealed nine sequence alterations. This observation, together with the finding of a complex pattern of hybridizing bands in genomic Southern analysis, suggests that mouse Hmg1 is encoded by a multigene family. The expression of Hmg1 was examined by Northern analysis of RNA isolated from the early mouse embryo and revealed a predominant 1.5-kb transcript in conjunction with low levels of a 2.5-kb transcript. Further analysis of mouse embryos by in situ hybridization showed that Hmg1 transcripts are expressed in high abundance during early mouse embryogenesis. As development progresses, Hmg1 transcript abundance is modulated in a spatially restricted and developmentally regulated manner. Chromosomal localization with recombinant inbred strains revealed that Hmg1-related sequences are widely dispersed in the mouse genome. Here we also report the mapping of six Hmg1 loci to mouse Chromosomes (Chrs) 10, 13, 16, and 17.Type of Medium: Electronic ResourceURL: