Man

Omar Orlando Orellana Orellana

Profesor Titular

FACULTAD DE MEDICINA, UNIVERSIDAD DE CHILE

Santiago, Chile

Líneas de Investigación


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

Educación

  •  Bioquímica, UNIVERSIDAD DE CHILE. Chile, 1983

Experiencia Profesional

  •   Profesor Titular Full Time

    Universidad de Chile

    Santiago, Chile

    1977 - A la fecha


 

Article (45)

Deciphering the role of multiple thioredoxin fold proteins of leptospirillum sp. In oxidative stress tolerance
The Type IV Secretion System of ICEAfe1: Formation of a Conjugative Pilus in Acidithiobacillus ferrooxidans
Codon usage and modular interactions between messenger RNA coding regions and small RNAs in Escherichia coli
Codon usage revisited=> Lack of correlation between codon usage and the number of tRNA genes in enterobacteria.
A DNA segment encoding the anticodon loop of tRNA determines the specific recombination of integrative-conjugative elements in Acidithiobacillus species.
Functionality of tRNAs encoded in a mobile genetic element from an acidophilic bacterium
A tyrosine-dependent riboswitch controls the expression of tyrosyl-tRNA synthetase from Acidithiobacillus ferrooxidans
Cobalamin Protection against Oxidative Stress in the Acidophilic Iron-oxidizing Bacterium Leptospirillum Group II CF-1.
Complete genome sequence of the bioleaching bacterium Leptospirillum sp group II strain CF-1
Effect of Hydrogen Peroxide on the Biosynthesis of Heme and Proteins: Potential Implications for the Partitioning of Glu-tRNA(Glu) between These Pathways
Toxin-Antitoxin Systems in the Mobile Genome of Acidithiobacillus ferrooxidans
Comparative Genomic Analysis Reveals Novel Facts about Leptospirillum spp. Cytochromes
Glutamyl-tRNA in bacteria. Multiple identities for multiple functions
ICEAfe1, an Actively Excising Genetic Element from the Biomining Bacterium Acidithiobacillus ferrooxidans
Cellular levels of heme affect the activity of dimeric glutamyl-tRNA reductase
Redox status affects the catalytic activity of glutamyl-tRNA synthetase
Redox status affects the catalytic activity of glutamyl-tRNA synthetase.
Transfer RNA´s Latest Port of Call
Regulation of a glutamyl-tRNA synthetase by the heme status
Insights into the iron and sulfur energetic metabolism of Acidithiobacillus ferrooxidans by microarray transcriptome profiling
Insights into the iron and sulfur energetic metabolism of Acidithiobacillus ferrooxidans by microarray transcriptome profiling
Microarray and bioinformatic analyses suggest models for carbon metabolism in the autotroph Acidithiobacillus ferrooxidans
A tRNA(Glu) that uncouples protein and tetrapyrrole biosynthesis
A tRNA(Glu) that uncouples protein and tetrapyrrole biosynthesis.
In vivo formation of glutamyl-tRNA(Gln) in Escherichia coli by heterologous glutamyl-tRNA synthetases
Coevolution of an aminoacyl-tRNA synthetase with its tRNA substrates
Coevolution of an aminoacyl-tRNA synthetase with its tRNA substrates.
A dispensable peptide from Acidithiobacillus ferrooxidans tryptophanyl-tRNA synthetase affects tRNA binding
A dual-specific Glu-tRNA(Gln) and Asp-tRNA(Asn) amidotransferase is involved in decoding glutamine and asparagine codons in Acidithiobacillus ferrooxidans
A dual-specific Glu-tRNA(Gln) and Asp-tRNA(Asn) amidotransferase is involved in decoding glutamine and asparagine codons in Acidithiobacillus ferrooxidans.
Conserved amino acids near the carboxy terminus of bacterial tyrosyl-tRNA synthetase are involved in tRNA and Tyr-AMP binding
tRNA recognition and evolution of determinants in seryl-tRNA synthesis.
Bacterial populations in samples of bioleached copper ore as revealed by analysis of DNA obtained before and after cultivation.
[Molecular genetic analysis of 2 Chilean cystic fibrosis patients and their families].
CFTR mutations in Chilean cystic fibrosis patients.
Thiobacillus ferrooxidans tyrosyl-tRNA synthetase functions in vivo in Escherichia coli.
Transposition of IST2 in Thiobacillus ferrooxidans.
[Molecular genetic study of cystic fibrosis in the Chilean population. Relationship to its clinical expression].
Isolation and nucleotide sequence of the Thiobacillus ferrooxidans genes for the small and large subunits of ribulose 1,5-bisphosphate carboxylase/oxygenase.
Identification and structural analysis of a ribosomal RNA gene promoter from Thiobacillus ferrooxidans.
Characterization of the two rRNA gene operons present in Thiobacillus ferrooxidans.
The additional guanylate at the 5' terminus of Escherichia coli tRNAHis is the result of unusual processing by RNase P.
A protein inhibitor of calmodulin-regulated cyclic nucleotide phosphodiesterase in amphibian ovaries.
Properties of a cyclic nucleotide phosphodiesterase of amphibian oocytes that is activated by calmodulin and calcium, by tryptic proteolysis, and by phospholipids.
Codon usage and modular interactions between messenger RNA coding regions and small RNAs in Escherichia coli

Review (1)

Glutamyl-tRNA in Bacteria. Multiple Identities for Multiple Functions
19
Omar Orellana

Profesor Titular

Programa de Biología Celular y Molecular

FACULTAD DE MEDICINA, UNIVERSIDAD DE CHILE

Santiago, Chile

7
Gloria Levican

Académica Profesora Titular

Departamento de Biología

UNIVERSIDAD DE SANTIAGO DE CHILE

Santiago, Chile

3
Raquel Quatrini

Research Associate

Fundación Ciencia & Vida

Santiago, Chile

3
Claudia Lefimil

Profesor Asistente

Instituto de Investigación en Ciencias odontológicas

UNIVERSIDAD DE CHILE

Santiago, Chile

2
David Holmes

Head, Laboratory of Bioinformatics and Genome Biology

Center for Bioinformatics and Genome Biology

FUNDACION CIENCIA & VIDA

Santiago, Chile

2
Merly de Armas

Profesor

Universidad de Aysén

Coyhaique, Chile

2
Mario Tello

Académico

Biología

Universidad de Santiago de Chile

Santiago, Chile

2
Renato Chavez

Full Professor

Biology

UNIVERSIDAD DE SANTIAGO DE CHILE

Santiago, Chile

1
Natalia Valdés

Investigador

Universidad de Santiago de Chile

Santiago, Chile

1
Paulo Covarrubias

Profesional

Genética Molecular

Instituto de Salud Pública

Santiago, Chile

1
Harold Nuñez

PostDoc

FUNDACIÓN CIENCIA PARA LA VIDA

Santiago, Chile

1
Sebastian Valenzuela

Director de Area Veterinaria

Area Veterinaria

Fundación Ciencia para la Vida

Santiago, Chile

1
Jorge Valdes

I

CENTRO DE GENOMICA Y BIOINFORMATICA

UNIVERSIDAD MAYOR

Santiago, Chile

1
RODRIGO FLORES

Investigador

Biología Celular y Molecular

Universidad de Chile

Macul, Chile

1
Juan Salazar

Profesor Asociado

Instituto de Ciencias Biomédicas

UNIVERSIDAD DE CHILE, FACULTAD DE MEDICINA

Santiago, Chile

1
Claudia Pareja

Postdoc

Departamento de Hematología-Oncología

Pontificia Universidad Católica de Chile

Santiago, Chile