30 Result(s)
within
S Sanchez
Life Sciences
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Article
Correction to: The starch-binding domain as a tool for recombinant protein purification
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Article
Animal and human RNA viruses: genetic variability and ability to overcome vaccines
RNA viruses, in general, exhibit high mutation rates; this is mainly due to the low fidelity displayed by the RNA-dependent polymerases required for their replication that lack the proofreading machinery to co...
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Chapter
Genetics and Biochemistry of Sporulation in Endospore-Forming Bacteria (Bacillus): A Prime Example of Developmental Biology
The development of spores represents one of the main morphogenetic processes in spore-forming bacterial groups, involving more than 150 genes and a variety of sigma factors. These factors control not only the ...
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Chapter
The Incredible Path of Myxobacteria Towards Aggregative Multicellularity
When reviewing developmental biology, it is imperative to mention the main prokaryote model for the study of mechanisms involved in cell growth, cell differentiation and morphogenesis, Myxobacteria. These Gram...
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Chapter
Effects of Cyanobacterial Metabolites on Other Bacterial Phyla and in the Morphogenesis, Viability, and Biochemistry of Eukaryotes
Prokaryotes were the earliest life forms on Earth but, although they originated an estimated 2 billion years before eukaryotic cells, both prokaryotes and eukaryotes share the same basic molecular mechanisms, ...
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Pharmacokinetics of two dosing forms of a recrystallized enrofloxacin as hydrochloride dihydrate in tilapia (Oreochromis niloticus × Oreochromis mossambicus)
A recrystallized solvate of enrofloxacin in the form of hydrochloride dihydrate (enro-C) has shown a greater bioavailability in other species and a higher solubility in water compared to standard enrofloxacin....
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Chapter
Horizontal Gene Transfer Among Neisseria Species and Humans
The genus Neisseria is included among those organisms containing a large number of foreign or exogenous genes in its genome. In most cases, the incorporation of these foreign genes is the consequence of recent ev...
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Open AccessBone Histology Reveals a High Environmental and Metabolic Plasticity as a Successful Evolutionary Strategy in a Long-Lived Homeostatic Triassic Temnospondyl
Evolutionary stasis (long-term stability of morphology in an evolving lineage) is a pattern for which explanations are usually elusive. The Triassic tetrapod Gerrothorax pulcherrimus, a gill-bearing temnospondyl,...
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The starch-binding domain as a tool for recombinant protein purification
Recombinant protein purification with affinity tags is a widely employed technique. One of the most common tags used for protein purification is the histidine tag (Histag). In this work, we use a tandem starch-bi...
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Article
A single residue mutation abolishes attachment of the CBM26 starch-binding domain from Lactobacillus amylovorus α-amylase
Starch is degraded by amylases that frequently have a modular structure composed of a catalytic domain and at least one non-catalytic domain that is involved in polysaccharide binding. The C-terminal domain fr...
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Article
Sugar fermentation by Fusarium oxysporum to produce ethanol
As a first step in the research on ethanol production from lignocellulose residues, sugar fermentation by Fusarium oxysporum in oxygen-limited conditions is studied in this work. As a substrate, solutions of arab...
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Article
Generation of aroma compounds from Ditaxis heterantha by Saccharomyces cerevisiae
Ditaxis heterantha, a plant of the Euphorbiaceae family, is growing wild in the semiarid regions of Mexico. The seed endosperm contains yellow pigments (carotenoids). By high-pressure liquid chromatography the to...
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Novel method for aroma recovery from the bioconversion of lutein to β-ionone by Trichosporon asahii using a mesoporous silicate material
In this work, we report on the synthesis and ability of the mesoporous material MCM-41 to adsorb the norisoprenoid β-ionone. This compound, with a violet aroma note, can be produced from lutein by the yeast Trich...
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Article
Orally administered tryptophan and experimental type 2 diabetes
There is a link between diabetes and oxidative stress. Hyperglycaemia leads to free radical generation and alterations of endogenous antioxidants. Our aim is to study the effect of orally administered L-trypto...
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Article
Production of tobacco aroma from lutein. Specific role of the microorganisms involved in the process
A mixed culture formed by Bacillus sp. and Geotrichum sp. produced tobacco aroma compounds from the carotenoid lutein through the formation of the intermediate β-ionone. Both microorganisms can grow independentl...
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Endometrial Tissue Concentrations of Enrofloxacin after Intrauterine Administration to Mares
Endometritis in mares is a common cause of infertility. Conventional treatments of the disease have mostly been unsuccessful, so new therapeutic alternatives need to be investigated. This study evaluated the u...
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Article
Some Comparative Aspects of the Pharmacokinetics of Tylosin in Buffaloes and Cattle
The pharmacokinetics of tylosin were compared in cattle (Bos taurus) and buffaloes (Bubalus bubalis). Six animals received each a single dose of 10 mg/kg of tylosin tartrate by the intramuscular route. The serum ...
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Article
Mixotrophic culture of Chlorella pyrenoidosa with olive-mill wastewater as the nutrient medium
With olive-mill wastewater (`alpechín') as the nutrient medium, theinfluence of specific rate of aeration and initial alpechín concentrationhave been analysed in cultures of Chlorella pyrenoidosa, exposed bothto ...
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Article
Copper but not iron limitation increases astaxanthin production by Phaffia rhodozyma in a chemically defined medium
The influence of copper (0–32 μM) and iron (0–108 μM) on growth and astaxanthin production by Phaffia rhodozyma was studied. Copper below 3.2 μM increased the astaxanthin content of the cells (from 220 to 287 μg ...
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Article
Citrate, a possible precursor of astaxanthin in Phaffia rhodozyma: influence of varying levels of ammonium, phosphate and citrate in a chemically defined medium.
The influence of ammonium, phosphate and citrate on astaxanthin production by the yeast Phaffia rhodozyma was investigated. The astaxanthin content in cells and the final astaxanthin concentration increased upon...
