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Alborghetti MR, Furlan ADS, da Silva JC, Sforça ML, Honorato RV, Granato DC, dos Santos Migueleti DL, Neves JL, de Oliveira PSL, Paes-Leme AF, Zeri ACDM, de Torriani ICL, Kobarg J. Structural analysis of intermolecular interactions in the kinesin adaptor complex fasciculation and elongation protein zeta 1/ short coiled-coil protein (FEZ1/SCOCO). PLoS One 2013; 8:e76602. [PMID: 24116125 PMCID: PMC3792052 DOI: 10.1371/journal.pone.0076602] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 08/29/2013] [Indexed: 01/15/2023] Open
Abstract
Cytoskeleton and protein trafficking processes, including vesicle transport to synapses, are key processes in neuronal differentiation and axon outgrowth. The human protein FEZ1 (fasciculation and elongation protein zeta 1 / UNC-76, in C. elegans), SCOCO (short coiled-coil protein / UNC-69) and kinesins (e.g. kinesin heavy chain / UNC116) are involved in these processes. Exploiting the feature of FEZ1 protein as a bivalent adapter of transport mediated by kinesins and FEZ1 protein interaction with SCOCO (proteins involved in the same path of axonal growth), we investigated the structural aspects of intermolecular interactions involved in this complex formation by NMR (Nuclear Magnetic Resonance), cross-linking coupled with mass spectrometry (MS), SAXS (Small Angle X-ray Scattering) and molecular modelling. The topology of homodimerization was accessed through NMR (Nuclear Magnetic Resonance) studies of the region involved in this process, corresponding to FEZ1 (92-194). Through studies involving the protein in its monomeric configuration (reduced) and dimeric state, we propose that homodimerization occurs with FEZ1 chains oriented in an anti-parallel topology. We demonstrate that the interaction interface of FEZ1 and SCOCO defined by MS and computational modelling is in accordance with that previously demonstrated for UNC-76 and UNC-69. SAXS and literature data support a heterotetrameric complex model. These data provide details about the interaction interfaces probably involved in the transport machinery assembly and open perspectives to understand and interfere in this assembly and its involvement in neuronal differentiation and axon outgrowth.
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Affiliation(s)
- Marcos Rodrigo Alborghetti
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Ariane da Silva Furlan
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
- Departamento de Bioquímica-Programa de Pós-graduação em Biologia Funcional e Molecular, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brasil
| | - Júlio César da Silva
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Maurício Luís Sforça
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Rodrigo Vargas Honorato
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Daniela Campos Granato
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Deivid Lucas dos Santos Migueleti
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
- Departamento de Genética, Evolução e Bioagentes, Programa de Pós-graduação em Genética e Biologia Molecular, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brasil
| | - Jorge L. Neves
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Paulo Sergio Lopes de Oliveira
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Adriana Franco Paes-Leme
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
| | - Ana Carolina de Mattos Zeri
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
- Departamento de Bioquímica-Programa de Pós-graduação em Biologia Funcional e Molecular, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brasil
| | | | - Jörg Kobarg
- Laboratório Nacional de Biociências-LNBio, Centro Nacional de Pesquisa em Energia e Materiais-CNPEM, Campinas, SP, Brasil
- Departamento de Bioquímica-Programa de Pós-graduação em Biologia Funcional e Molecular, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brasil
- Departamento de Genética, Evolução e Bioagentes, Programa de Pós-graduação em Genética e Biologia Molecular, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brasil
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Tiwari S, Singh RK, Tiwari R, Dhole TN. Japanese encephalitis: a review of the Indian perspective. Braz J Infect Dis 2012; 16:564-73. [PMID: 23141974 DOI: 10.1016/j.bjid.2012.10.004] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 07/11/2012] [Indexed: 11/30/2022] Open
Abstract
Japanese encephalitis virus (JEV) causes Japanese encephalitis, which is a leading form of viral encephalitis in Asia, with around 50,000 cases and 10,000 deaths per year in children below 15 years of age. The JEV has shown a tendency to extend to other geographic regions. Case fatality averages 30% and a high percentage of the survivors are left with permanent neuropsychiatric sequelae. Currently, there is no cure for JEV, and treatment is mainly supportive. Patients are not infectious, but should avoid further mosquito bites. A number of antiviral agents have been investigated; however, none of these have convincingly been shown to improve the outcome of JEV. In this review, the current knowledge of the epidemiology and the pathogenesis of this deadly disease have been summarized.
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Affiliation(s)
- Sarika Tiwari
- Department of Microbiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
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Lanza DCF, Trindade DM, Assmann EM, Kobarg J. Over-expression of GFP-FEZ1 causes generation of multi-lobulated nuclei mediated by microtubules in HEK293 cells. Exp Cell Res 2008; 314:2028-39. [PMID: 18439996 DOI: 10.1016/j.yexcr.2008.02.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2007] [Revised: 02/20/2008] [Accepted: 02/26/2008] [Indexed: 12/17/2022]
Abstract
FEZ1 (Fasciculation and elongation protein zeta 1) is an ortholog of the Caenorhabditis elegans protein UNC-76, involved in neuronal development and axon outgrowth, in that worm. Mammalian FEZ1 has already been reported to cooperate with PKC-zeta in the differentiation and polarization of PC12 neuronal cells. Furthermore, FEZ1 is associated with kinesin 1 and JIP1 to form a cargo-complex responsible for microtubule based transport of mitochondria along axons. FEZ1 can also be classified as a hub protein, since it was reported to interact with over 40 different proteins in yeast two-hybrid screens, including at least nine nuclear proteins. Here, we transiently over-expressed GFP-FEZ1full in human HEK293 and HeLa cells in order to study the sub-cellular localization of GFP-FEZ1. We observed that over 40% of transiently transfected cells at 3 days post-transfection develop multi-lobulated nuclei, which are also called flower-like nuclei. We further demonstrated that GFP-FEZ1 localizes either to the cytoplasm or the nuclear fraction, and that the appearance of the flower-like nuclei depends on intact microtubule function. Finally, we show that FEZ1 co-localizes with both, alpha- and especially with gamma-tubulin, which localizes as a centrosome like structure at the center of the multiple lobules. In summary, our data suggest that FEZ1 has an important centrosomal function and supply new mechanistic insights to the formation of flower-like nuclei, which are a phenotypical hallmark of human leukemia cells.
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Affiliation(s)
- Daniel C F Lanza
- Laboratório Nacional de Luz Síncrotron, Campinas SP, Brazil; Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
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Abstract
Japanese encephalitis (JE) is a major public health problem in Southeast Asia with around 50,000 cases and 10,000 deaths per year affecting essentially children below 10 years of age. The JE virus has shown a tendency to extend to other geographic regions. JE may cause severe encephalitis and survivors are frequently left with serious neurological lesions. In the absence of an effective antiviral treatment, prevention constitutes the best defense against this disease. Besides the implementation of vector control, immunization by vaccination is available. Vector control is expensive and difficult to implement on a large scale, leaving vaccination as the best means for mass campaigns. Recent progress in the development of live attenuated vaccines has given hope of an effective vaccine, which is both easy to use and inexpensive for large scale programs.
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Affiliation(s)
- Mouhamadou Diagana
- Institute of Neuroepidemiology and Tropical Neurology (EA3174), Faculty of Medicine, Limoges, France
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