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Omar Orlando Orellana Orellana

Profesor Titular

FACULTAD DE MEDICINA, UNIVERSIDAD DE CHILE

Santiago, Chile

Estructura y función de ácidos ribonucleicos. Control de la traducción por sRNAs y por uso de codones.

Bioquímica, UNIVERSIDAD DE CHILE. Chile, 1983

Profesor Titular Full Time

Universidad de Chile

Santiago, Chile

1977 - At present


Deciphering the Role of Multiple Thioredoxin Fold Proteins of Leptospirillum sp. in Oxidative Stress Tolerance González D.; Álamos P.; Rivero M.; Orellana O.; Norambuena J.; Chávez R.; Levicán G. Article ISI SCOPUS INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2020)
The Type IV Secretion System of ICEAfe1: Formation of a Conjugative Pilus in Acidithiobacillus ferrooxidans Flores-Rios, Rodrigo; Moya-Beltran, Ana; Pareja-Barrueto, Claudia; Arenas-Salinas, Mauricio; Valenzuela, Sebastian; Orellana, Omar; Quatrini, Raquel Article ISI SCOPUS FRONTIERS IN MICROBIOLOGY (2019)
Codon usage and modular interactions between messenger RNA coding regions and small RNAs in Escherichia coli Tello, M; Avalos, F; Orellaru, O Article ISI SCOPUS BMC GENOMICS (2018)
Codon usage revisited=> Lack of correlation between codon usage and the number of tRNA genes in enterobacteria. Rojas, J; Castillo, G; Leiva, L; Elgamal S , Orellana; O , Ibba; M, Katz Article Biochemical and Biophysical Research Communications 502(4)=>450-455. (2018)
A DNA segment encoding the anticodon loop of tRNA determines the specific recombination of integrative-conjugative elements in Acidithiobacillus species. Castillo A, Tello M; Ringwald K, Acuña L Article RNA BIOLOGY (2017)
Functionality of tRNAs encoded in a mobile genetic element from an acidophilic bacterium Alamos A, Tello M; Bustamante P, Gutiérrez F; Shmaryahu A, Maldonado J and Orellana O Article RNA BIOLOGY (2017)
A tyrosine-dependent riboswitch controls the expression of tyrosyl-tRNA synthetase from Acidithiobacillus ferrooxidans Paula Bustamante, Oriana Salazar, Héctor Garcías, Pamela Alamos, and Omar Orellana Article CROATICA CHEMICA ACTA (2016)
Cobalamin Protection against Oxidative Stress in the Acidophilic Iron-oxidizing Bacterium Leptospirillum Group II CF-1. Ferrer, A. Rivera; J Zapata, C. Norambuena; J. Sandoval, Á. Chávez; R. Orellana O, Levicán Article FRONTIERS IN MICROBIOLOGY (2016)
Complete genome sequence of the bioleaching bacterium Leptospirillum sp group II strain CF-1 Ferrer A.; Bunk, B; Sproer, C; Biedendieck R.; Valdés N.; Jahn M.; Jahn, D.; Orellana O.; Levicán G Article ISI SCOPUS JOURNAL OF BIOTECHNOLOGY (2016)
Effect of Hydrogen Peroxide on the Biosynthesis of Heme and Proteins: Potential Implications for the Partitioning of Glu-tRNA(Glu) between These Pathways Farah C.; Levicán G; Ibba, M; Orellana O. Article ISI SCOPUS INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2014)
Toxin-Antitoxin Systems in the Mobile Genome of Acidithiobacillus ferrooxidans Bustamante, P; Tello, M; Orellana O. Article ISI SCOPUS PLOS ONE (2014)
Comparative Genomic Analysis Reveals Novel Facts about Leptospirillum spp. Cytochromes Levicán G; Gomez M.J.; Chavez, R; Orellana O.; Moreno-Paz, M; Parro V. Article ISI SCOPUS Journal of Molecular Microbiology and Biotechnology (2012)
Glutamyl-tRNA in bacteria. Multiple identities for multiple functions Katz, A and Orellana, O. Article Croatian Chem. Acta (2012)
ICEAfe1, an Actively Excising Genetic Element from the Biomining Bacterium Acidithiobacillus ferrooxidans Bustamante, P; Covarrubias PC; Levicán G; Katz, A; Tapia, P; Holmes D; Quatrini, R; Orellana O. Article ISI SCOPUS Journal of Molecular Microbiology and Biotechnology (2012)
Cellular levels of heme affect the activity of dimeric glutamyl-tRNA reductase de Armas-Ricard M.; Katz, A; Orellana O.; Levicán G; Moser, J.; Jahn, D. Article ISI SCOPUS Biochemical and Biophysical Research Communications (2011)
Redox status affects the catalytic activity of glutamyl-tRNA synthetase Katz, A; Banerjee, R; de Armas, M.; Ibba, M; Orellana O. Article ISI SCOPUS Biochemical and Biophysical Research Communications (2010)
Redox status affects the catalytic activity of glutamyl-tRNA synthetase. Katz, Assaf; Banerjee, Rajat; de Armas, Merly; Ibba, Michael; Orellana, Omar Article Biochemical and biophysical research communications (2010)
Transfer RNA´s Latest Port of Call Santos, M., Orellana, O. and Ibba, M. Article RNA Biology (2010)
Regulation of a glutamyl-tRNA synthetase by the heme status Levicán G; Katz, A; de Armas, M.; Núñez H; Orellana O. Article ISI SCOPUS PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2007)
Insights into the iron and sulfur energetic metabolism of Acidithiobacillus ferrooxidans by microarray transcriptome profiling Quatrini R; Appia-Ayme, C; Denis Y.; Ratouchniak, J; Veloso F.; Valdés J.; Lefimil C; Silver, S; Roberto, F; Orellana O.; Denizot, F; Jedlicki E; Holmes D.; Bonnefoy V. Article HYDROMETALLURGY (2006)
Insights into the iron and sulfur energetic metabolism of Acidithiobacillus ferrooxidans by microarray transcriptome profiling Quatrini, R; Appia-Ayme, C; Denis Y.; Ratouchniak, J; Veloso F.; Valdés J.; Lefimil, C; Silver, S; Roberto, F; Orellana O.; Denizot, F.; Jedlicki, E; Holmes D; Bonnefoy, V Article ISI SCOPUS HYDROMETALLURGY (2006)
Microarray and bioinformatic analyses suggest models for carbon metabolism in the autotroph Acidithiobacillus ferrooxidans Appia-Ayme, C; Quatrini R; Denis Y.; Denizot, F; Silver, S; Roberto, F; Veloso F.; Valdés J.; Cárdenas JP; Esparza M.; Orellana O.; Jedlicki E; Bonnefoy V.; Holmes DS Article HYDROMETALLURGY (2006)
A tRNA(Glu) that uncouples protein and tetrapyrrole biosynthesis Levicán G; Katz, A; Valenzuela P.; Soll, D; Orellana O. Article ISI SCOPUS FEBS LETTERS (2005)
A tRNA(Glu) that uncouples protein and tetrapyrrole biosynthesis. Levicán, Gloria; Katz, Assaf; Valenzuela, Patricio; Söll, Dieter; Orellana, Omar Article FEBS letters (2005)
In vivo formation of glutamyl-tRNA(Gln) in Escherichia coli by heterologous glutamyl-tRNA synthetases Nunez, HN; Lefimil, C; Min, B; Soll, D; Orellana O. Article ISI FEBS LETTERS (2004)
Coevolution of an aminoacyl-tRNA synthetase with its tRNA substrates Salazar, JC; Ahel, I; Orellana O.; Tumbula-Hansen, D; Krieger, R; Daniels, L; Soll, D Article ISI SCOPUS PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2003)
Coevolution of an aminoacyl-tRNA synthetase with its tRNA substrates. Salazar, Juan C; Ahel, Ivan; Orellana, Omar; Tumbula-Hansen, Debra; Krieger, Robert; Daniels, Lacy; Söll, Dieter Article Proceedings of the National Academy of Sciences of the United States of America (2003)
A dispensable peptide from Acidithiobacillus ferrooxidans tryptophanyl-tRNA synthetase affects tRNA binding Zúñiga R.; Salazar J.; Canales, M;; Orellana O. Article ISI SCOPUS FEBS LETTERS (2002)
A dual-specific Glu-tRNA(Gln) and Asp-tRNA(Asn) amidotransferase is involved in decoding glutamine and asparagine codons in Acidithiobacillus ferrooxidans Salazar, JC; Zúñiga R.; Raczniak, G; Becker, H; Soll, D; Orellana O. Article ISI SCOPUS FEBS LETTERS (2001)
A dual-specific Glu-tRNA(Gln) and Asp-tRNA(Asn) amidotransferase is involved in decoding glutamine and asparagine codons in Acidithiobacillus ferrooxidans. Salazar, J C; Zúñiga, R; Raczniak, G; Becker, H; Söll, D; Orellana, O Article FEBS letters (2001)
Conserved amino acids near the carboxy terminus of bacterial tyrosyl-tRNA synthetase are involved in tRNA and Tyr-AMP binding Salazar, JC; Zúñiga R.; Lefimil, C; Soll, D; Orellana O. Article ISI SCOPUS FEBS LETTERS (2001)
tRNA recognition and evolution of determinants in seryl-tRNA synthesis. Lenhard, B; Orellana, O; Ibba, M; Weygand-Durasevi?, I Article Nucleic acids research (1999)
Bacterial populations in samples of bioleached copper ore as revealed by analysis of DNA obtained before and after cultivation. Pizarro, J; Jedlicki, E; Orellana, O; Romero, J; Espejo, R T Article Applied and environmental microbiology (1996)
[Molecular genetic analysis of 2 Chilean cystic fibrosis patients and their families]. Ríos, J; Orellana, O; Riveros, N Article Revista mÃ©dica de Chile (1994)
CFTR mutations in Chilean cystic fibrosis patients. Rios, J; Orellana, O; Aspillaga, M; Avendano, I; Largo, I; Riveros, N Article Human genetics (1994)
Thiobacillus ferrooxidans tyrosyl-tRNA synthetase functions in vivo in Escherichia coli. Salazar, O; Sagredo, B; Jedlicki, E; Söll, D; Weygand-Durasevic, I; Orellana, O Article Journal of bacteriology (1994)
Transposition of IST2 in Thiobacillus ferrooxidans. Cádiz, R; Gaete, L; Jedlicki, E; Yates, J; Holmes, D S; Orellana, O Article Molecular microbiology (1994)
[Molecular genetic study of cystic fibrosis in the Chilean population. Relationship to its clinical expression]. Aspillaga, M; Avendaño, I; Largo, I; Valenzuela, C; Riveros, N; Orellana, O; Moreno, M A Article Revista mÃ©dica de Chile (1993)
Isolation and nucleotide sequence of the Thiobacillus ferrooxidans genes for the small and large subunits of ribulose 1,5-bisphosphate carboxylase/oxygenase. Pulgar, V; Gaete, L; Allende, J; Orellana, O; Jordana, X; Jedlicki, E Article FEBS letters (1991)
Identification and structural analysis of a ribosomal RNA gene promoter from Thiobacillus ferrooxidans. Takamiya, M; Salazar, O; Vargas, D; Jedlicki, E; Orellana, O Article FEBS letters (1990)
Characterization of the two rRNA gene operons present in Thiobacillus ferrooxidans. Salazar, O; Takamiya, M; Orellana, O Article FEBS letters (1989)
The additional guanylate at the 5' terminus of Escherichia coli tRNAHis is the result of unusual processing by RNase P. Orellana, O; Cooley, L; Söll, D Article Molecular and cellular biology (1986)
A protein inhibitor of calmodulin-regulated cyclic nucleotide phosphodiesterase in amphibian ovaries. Jedlicki, E; Orellana, O; Allende, C C; Allende, J E Article Archives of biochemistry and biophysics (1985)
Properties of a cyclic nucleotide phosphodiesterase of amphibian oocytes that is activated by calmodulin and calcium, by tryptic proteolysis, and by phospholipids. Orellana, O; Jedlicki, E; Allende, C C; Allende, J E Article Archives of biochemistry and biophysics (1984)
Codon usage and modular interactions between messenger RNA coding regions and small RNAs in Escherichia coli Tello, Mario ; Ávalos, Felipe and Orellana Article BMC GENOMICS (0)