Futebol, poesia e drama: o espetáculo

O que seria necessário para que se pudesse dizer que uma partida de futebol semelha de alguma forma a um espetáculo teatral, poético, emocional? O artigo propõe um passeio livre pela história dos diferentes tipos de teatro e pelas mudanças sofridas ao longo dos anos. A autora lembra que existe, da metade do século passado para cá, uma nítida divisão que colocou em campos opostos o teatro dramático e o teatro épico, o drama rigoroso contra o texto quase absolutamente livre, Aristóteles contra Brecht. E volta a apresentar as razões pela qual se pode afirmar que existem certos momentos no futebol que o aproximam ainda mais do espetáculo teatral, da dança, da comédia e do drama

Purification, characterization and structural determination of chitinases produced by Moniliophthora perniciosa

The enzyme chitinase from Moniliophthora perniciosa the causative agent of the witches' broom disease in Theobroma cacao, was partially purified with ammonium sulfate and filtration by Sephacryl S-200 using sodium phosphate as an extraction buffer. Response surface methodology (RSM) was used to determine the optimum pH and temperature conditions. Four different isoenzymes were obtained: ChitMp I, ChitMp II, ChitMp III and ChitMp IV. ChitMp I had an optimum temperature at 44-73ºC and an optimum pH at 7.0-8.4. ChitMp II had an optimum temperature at 45-73ºC and an optimum pH at 7.0-8.4. ChitMp III had an optimum temperature at 54-67ºC and an optimum pH at 7.3-8.8. ChitMp IV had an optimum temperature at 60ºC and an optimum pH at 7.0. For the computational biology, the primary sequence was determined in silico from the database of the Genome/Proteome Project of M. perniciosa, yielding a sequence with 564 bp and 188 amino acids that was used for the three-dimensional design in a comparative modeling methodology. The generated models were submitted to validation using Procheck 3.0 and ANOLEA. The model proposed for the chitinase was subjected to a dynamic analysis over a 1 ns interval, resulting in a model with 91.7% of the residues occupying favorable places on the Ramachandran plot and an RMS of 2.68.