Revista de Química. Vol. 30 Núm. 1-2 (2016)

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Superbacterias portan nuevo gen que les hace resistir a todos los antibacterianos
(Pontificia Universidad Católica del Perú, 2016-10-03) Marchese Morales, Adolfo
A group of Chinese scientists have found a new gene in gram negative bacteria, the MCR-1. This gene has given pathogenic bacteria resistance to colistin, which is the antibacterial that medical doctors use as last line of defense against multi-drug resistant infections. Superbacteria with MCR-1 will be potentially epidemic, and diseases that were believed to be controlled such as pneumonia, tuberculosis and urinary tract infections could be lethal again.
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Enlazando química y biología: secuencias de proteínas
(Pontificia Universidad Católica del Perú, 2016-10-05) Laos, Roberto; Benner, Steven A.
In the last twenty years, the number of complete genomes that have been sequenced and deposited in data banks has grown dramatically. This abundance in sequence information has supported the creation of the discipline known as paleogenetics. In this article, without going into complex algorithms, we present some key concepts for understanding how proteins have evolved in time. We then illustrate how paleogenetic analysis can be used in biotechnology. These examples highlight the connection between chemistry and biology, two disciplines that twenty years ago seemed to be more different than what they seem to be today.
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El porqué de que bebamos alcohol tiene sus raíces en nuestra evolución
(Pontificia Universidad Católica del Perú, 2016-10-05) Carrigan, Matthew A.
We have resurrected ancient enzymes from our primate ancestors and identified several mutations occurring approximately 10 million years ago that endowed our ancestors with an enhanced capacity to metabolize ethanol. This episode of enzyme evolution coincided with a global climate change associated with shrinking African forests and our ancestor’s transition from an arboreal lifestyle to a terrestrial lifestyle where highly fermented fruit is more common. These studies suggest that the evolution of our ancestor’s enzymes may have enabled our ancestors to exploit an alternative source of nourishment during a time when food was scarce.
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Una molécula para los aficionados al fútbol
(Pontificia Universidad Católica del Perú, 2016-09-30) Rabinovich, Daniel
A molecule for football fans (The discovery of fullerenes and their appearance on stamps UK)
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Artículos científicos de la Sección Química de la PUCP, 2016
(Pontificia Universidad Católica del Perú, 2016-10-03) editorial, Comité
Aquí encontrará la primera página y el link de todos los artículos científicos publicados en revistas internacionales por los integrantes de la Sección Química de la PUCP hasta septiembre de 2016.
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Poliimidas de alto rendimiento con forma angular
(Pontificia Universidad Católica del Perú, 2016-09-30) Cerrón-Infantes, Alonso; Unterlass, Miriam M.
High-performance polymers (HPPs) play an important role in modern technology. Many efforts aim to develop cost-effective pathways to synthesize polymers without causing any harm to health and the environment. Polyimides (PIs) belong to the class of HPPs and they show outstanding features e.g. high-temperature stability, resistance to aggressive chemicals and radiation, as well as insulating properties. PI synthesis, however, present yet major challenges. We herein present an alternative approach to PIs of intriguing shape and of impressive size.
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“Science and Art. The Painted Surface” de Antonio Sgamellotti, Brunetto Giovanni Brunetti y Costanza Miliani (Editores)
(Pontificia Universidad Católica del Perú, 2016-10-03) Gonzales Gil, Patricia
Short review of the most important and interesting sections of the multidisciplinary science book that we strongly recommend: "Science and Art. The Painted Surface”.
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Corrosión: inexorabilidad vs. durabilidad
(Pontificia Universidad Católica del Perú, 2016-10-03) Diaz Tang, Isabel
In general, a material will tend to corrode in a specific environment when the corrosion products are more stable than the starting material or, when exposed to certain conditions, a corrosion process results favored. In general practice, the goal is to extend the service life of structures, equipment or devices, that is, to improve their durability.
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30 años ... y seguimos divulgando la química con la misma ilusión de siempre
(Pontificia Universidad Católica del Perú, 2016-11-04) Ortega San Martín, Luis
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Revista de Química. Vol. 30 Núm. 1-2 (2016)

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