Artículo

Di Noia, J.M.; Pollevick, G.D.; Xavier, M.T.; Previato, J.O.; Mendoça-Previato, L.; Sánchez, D.O.; Frasch, A.C.C. "High diversity in mucin genes and mucin molecules in Trypanosoma cruzi" (1996) Journal of Biological Chemistry. 271(50):32078-32083
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Abstract:

Mucins are highly O-glycosylated molecules which in mammalian cells accomplish essential functions, like cytoprotection and cell-cell interactions. In the protozoan parasite Trypanosoma cruzi, mucin-related glycoproteins have been shown to play a relevant role in the interaction with and invasion of host cells. We have previously reported a family of mucin- like genes in T. cruzi whose overall structure resembled that of mammalian mucin genes. We have now analyzed the relationship between these genes and mucin proteins. A monoclonal antibody specific for a mucin sugar epitope and a polyclonal serum directed to peptide epitopes in a MUC gene-encoded recombinant protein, detected identical bands in three out of seven strains of T. cruzi. Immunoprecipitation experiments confirmed these results. When expressed in eukaryotic cells, the MUC gene product is post-translationally modified, most likely, through extensive O-glycosylation. Gene sequencing showed that the central domains encoding the repeated sequences with the consensus T 8KP 2, varies in number from 1 to 10, and the number of Thr residues in each repeat could be 7, 8, or 10. A run of 16 to 18 Thr residues was present in some, but not all, MUC gene-derived sequences. Direct compositional analysis of mucin core proteins showed that Thr residues are much more frequent than Ser residues. The same fact occurs in MUC gene- derived protein sequences. Molecular mass determinations of the 35-kDa glycoproteins further extend the heterogeneity of the family to the natural mucin molecules. Difficulties in assigning each of the several MUC genes identified to a mucin product arise from the high diversity and partial sequence conservation of the members of this family.

Registro:

Documento: Artículo
Título:High diversity in mucin genes and mucin molecules in Trypanosoma cruzi
Autor:Di Noia, J.M.; Pollevick, G.D.; Xavier, M.T.; Previato, J.O.; Mendoça-Previato, L.; Sánchez, D.O.; Frasch, A.C.C.
Filiación:Inst. de Invest. Bioquímicas, Fundación Campomar, Antonio Machado 151, Argentina
Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1405 Buenos Aires, Argentina
Depto. de Microbiología Geral, Univ. Federal do Rio de Janeiro, 21944970 Cidade Universitária, Rio de Janeiro, RJ, Brazil
Palabras clave:mucin; article; gene sequence; gene structure; genetic heterogeneity; nonhuman; priority journal; protein analysis; protein processing; protozoal infection; trypanosoma cruzi; Amino Acids; Animals; Blotting, Western; Glycosylation; Molecular Sequence Data; Molecular Weight; Mucins; Phenol; Phenols; Trypanosoma cruzi; Eukaryota; Mammalia; Protozoa; Trypanosoma; Trypanosoma cruzi
Año:1996
Volumen:271
Número:50
Página de inicio:32078
Página de fin:32083
DOI: http://dx.doi.org/10.1074/jbc.271.50.32078
Handle:http://hdl.handle.net/20.500.12110/paper_00219258_v271_n50_p32078_DiNoia
Título revista:Journal of Biological Chemistry
Título revista abreviado:J. BIOL. CHEM.
ISSN:00219258
CODEN:JBCHA
CAS:Amino Acids; Mucins; Phenol, 108-95-2; Phenols
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00219258_v271_n50_p32078_DiNoia.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219258_v271_n50_p32078_DiNoia

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Citas:

---------- APA ----------
Di Noia, J.M., Pollevick, G.D., Xavier, M.T., Previato, J.O., Mendoça-Previato, L., Sánchez, D.O. & Frasch, A.C.C. (1996) . High diversity in mucin genes and mucin molecules in Trypanosoma cruzi. Journal of Biological Chemistry, 271(50), 32078-32083.
http://dx.doi.org/10.1074/jbc.271.50.32078
---------- CHICAGO ----------
Di Noia, J.M., Pollevick, G.D., Xavier, M.T., Previato, J.O., Mendoça-Previato, L., Sánchez, D.O., et al. "High diversity in mucin genes and mucin molecules in Trypanosoma cruzi" . Journal of Biological Chemistry 271, no. 50 (1996) : 32078-32083.
http://dx.doi.org/10.1074/jbc.271.50.32078
---------- MLA ----------
Di Noia, J.M., Pollevick, G.D., Xavier, M.T., Previato, J.O., Mendoça-Previato, L., Sánchez, D.O., et al. "High diversity in mucin genes and mucin molecules in Trypanosoma cruzi" . Journal of Biological Chemistry, vol. 271, no. 50, 1996, pp. 32078-32083.
http://dx.doi.org/10.1074/jbc.271.50.32078
---------- VANCOUVER ----------
Di Noia, J.M., Pollevick, G.D., Xavier, M.T., Previato, J.O., Mendoça-Previato, L., Sánchez, D.O., et al. High diversity in mucin genes and mucin molecules in Trypanosoma cruzi. J. BIOL. CHEM. 1996;271(50):32078-32083.
http://dx.doi.org/10.1074/jbc.271.50.32078