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Three tubulin genes of Trichoderma harzianum: alpha, beta and gamma BABT
Li,Min; Yang,Qian; Song,Jinzhu.
Three tubulin genes of Trichoderma harzianum were cloned followed genomic walking procedure. The tubulins showed high degree of amino acid homology with other fungal tubulins and were homologous with each other with 32 to 38% amino acid identity. Three measures for the degree of codon usage bias indicated the presence of bias in all the sequences, suggesting high expression levels in all the genes. Protein structures were modeled to provide the basis for understanding the tubulin's properties and its interactions with microtubule-associated proteins. Potential motifs were also postulated.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trichoderma harzianum; Tubulin; Codon usage bias; Motif.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400009
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Microtubule proteins and their post-translational forms in the cerebrospinal fluid of patients with paraparesis associated with HTLV-I infection and in SH-SY5Y cells: An in vitro model of HTLV-I-induced disease Biol. Res.
MALDONADO,HORACIO; ORTIZ-RIAÑO,EMILIO; KRAUSE,BERNARDO; BARRIGA,ANDRÉS; MEDINA,FERNANDO; PANDO,M ELSA; ALBERTI,CAROLINA; KETTLUN,ANA M; COLLADOS,LUCÍA; GARCÍA,LORENA; CARTIER,LUIS; VALENZUELA,M ANTONIETA.
HTLV-I-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is characterized by axonal degeneration of the corticospinal tracts. The specific requirements for transport of proteins and organelles to the distal part of the long axon are crucial in the corticospinal tracts. Microtubule dysfunction could be involved in this disease, configuring an axonal transport disease. We measured tubulin and its post-translational modified forms (acetylated and tyrosinated) in CSF of patients and controls, as well as tau and its phosphorylated forms. There were no significant differences in the contents of tubulin and acetyl-tubulin between patients and controls; tyrosyl-tubulin was not detected. In HAM/TSP, tau levéis were significantly reduced, while the ratio...
Tipo: Journal article Palavras-chave: Tropical spastic paraparesis; Cerebrospinal fluid; SH-SY5Y cells; Retraction; Tau; Phosphorylated-tau forms; Tubulin; Acetyl-tubulin.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000300001
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Divalent cation hinder the solubilization of a tubulin kinase activity from Trypanosoma cruzi epimastigotes Biol. Res.
UZCANGA,GRACIELA; GALÁN-CARIDAD,JOSÉ MANUEL; SUAREZ,KAREM NORIS; BUBIS,JOSÉ.
Trypanosoma cruzi epimastigotes were extracted under various conditions in order to examine the role of divalent cations in the solubilization of microtubule proteins. When epimastigotes were homogenized in the presence of 5 mM Mg+2 and 5 mM Ca+2, a protein kinase responsible for phosphorylating tubulin, as well as the tubulin that became phosphorylated, remained tightly associated with the parasite particulate and detergent-resistant fractions. On the contrary, tubulin kinase and its substrate were predominantly released into the parasite cytosolic and detergent-soluble fractions, when epimastigotes were extracted in the presence of 5 mM EDTA and 5 mM EGTA. These evidences demonstrated a divalent cation-dependent solubilization of the enzyme responsible...
Tipo: Journal article Palavras-chave: Microtubules; Post-translational modification of tubulin; Protein kinase CK2; Protein phosphorylation-dephosphorylation; Signal transduction; Trypanosoma cruzi; Tubulin.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000300008
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