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On the classes of aminoacyl-tRNA synthetases and the error minimization in the genetic code.

• André R. O. Cavalcanti, Brenno A D Neto, Ricardo Pinto Ferreira
• Journal of theoretical biology
• 2000

As a consequence of the existence of two classes of aminoacyl-tRNA synthetases (aaRSs), we defined two types of mutations: g (mutations that do not change the class of the involved amino acids) and u… (More)

Major gene and multifactorial inheritance of mandibular prognathism.

• Ricardo Machado Cruz, H. Jochen Krieger, Ricardo Pinto Ferreira, James Mah, James Kennedy Hartsfield, Silviene Fabiana de Oliveira
• American journal of medical genetics. Part A
• 2008

Mandibular prognathism typically shows familial aggregation. Various genetic models have been described and it is assumed to be a multifactorial and polygenic trait, with a threshold for expression.… (More)

VESTIGES OF EARLY MOLECULAR PROCESSES LEADING TO THE GENETIC CODE

• Ricardo Pinto Ferreira, André R. O. Cavalcanti
• Origins of life and evolution of the biosphere
• 1997

We compare predictions from a proposed model for the origin of the genetic code (J. Theor. Biol (1993) 164, 291–305) with existing information on the base content of codons and abundance of amino… (More)

Pepsin-like aspartic protease (Sc-ASP155) cloning, molecular characterization and gene expression analysis in developmental stages of nematode Steinernema carpocapsae.

• Natesan Balasubramanian, Gisela Nascimento, Ricardo Pinto Ferreira, Monica Martinez, N. J. O. Simões
• Gene
• 2012

Steinernema carpocapsae is an insect parasitic nematode associated with the bacterium Xenorhabdus nematophila. These symbiotic complexes are virulent against the insect host. Many protease genes were… (More)

Purification, molecular characterization and gene expression analysis of an aspartic protease (Sc-ASP113) from the nematode Steinernema carpocapsae during the parasitic stage.

• Natesan Balasubramanian, Duarte Toubarro, Gisela Nascimento, Ricardo Pinto Ferreira, N. J. O. Simões
• Molecular and biochemical parasitology
• 2012

Steinernema carpocapsae is an insect parasitic nematode associated with the bacterium Xenorhabdus nematophila. During invasion, this nematode is able to express many proteases, including aspartic… (More)

On the Classes of Aminoacyl-tRNA Synthetases, Amino Acids and the Genetic Code

• André R. O. Cavalcanti, Elisa Soares Leite, Benício B. Neto, Ricardo Pinto Ferreira
• Origins of life and evolution of the biosphere
• 2004

The division of the aminoacyl-tRNA synthetases in two classes is compared with a division of the amino acids in two classes, obtained from the AAIndex databank by a principal component analysis. The… (More)

The catalytic mechanism of serine proteases II: The effect of the protein environment in the alpha-chymotrypsin proton relay system.

• Elson Longo, F M Stamato, Ricardo Pinto Ferreira, Orlando Tapia
• Journal of theoretical biology
• 1985

The proton relay system of alpha-chymotrypsin is analyzed by the INDOISCRF method. The effects of the protein electric and polarization fields are explicitly introduced in the calculations. It is… (More)

The catalytic mechanism of serine proteases. III. An Indo-ISCRF study of the methylacetate docking in alpha-chymotrypsin.

• F M Stamato, Elson Longo, Ricardo Pinto Ferreira, Orlando Tapia
• Journal of theoretical biology
• 1986

Mechanistic steps of the catalytic hydrolysis of methylacetate by alpha-chymotrypsin have been studied with the inhomogeneous selfconsistent reaction field theory of protein core effects.… (More)

Data in graphs and tables

• Ricardo Pinto Ferreira
• 1986

Do older taxa have older proteins?

• Ricardo Pinto Ferreira, Frederico José de Santana Pontes, Benício de Barros Neto, P. M. A. de Farias
• Zeitschrift fur Naturforschung. C, Journal of…
• 2004

We have confirmed through an enlarged set of 728 species with 10,000 or more compiled codons, and a subset of 237 species with at least 50,000 compiled codons, that the mean values of a previously… (More)

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