Výsledky vyhledávání - "Melisa E Magallanes"

Opportunities Lost? Evolutionary Causes and Ecological Consequences of the Absence of Trehalose Digestion in Birds

Autor: Antonio Brun, Yocelyn Gutiérrez-Guerrero, Melisa E. Magallanes, Enrique Caviedes-Vidal, William H. Karasov, Carlos Martínez del Rio

Publikováno v: Physiological and Biochemical Zoology. 95:340-349

Trehalose is a nonreducing disaccharide that is a primary storage and energy source in prokaryotes, yeasts, fungi, and invertebrates. Vertebrates digest trehalose with the intestinal brush border membrane (BBM) enzyme trehalase. Intestinal trehalase

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3704c34bfaa982417337e951cd9e7801
https://doi.org/10.1086/720232

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Akademický článek

A Fast and Accurate Method to Identify and Quantify Enzymes in Brush-Border Membranes: In Situ Hydrolysis Followed by Nano LC-MS/MS

Autor: Antonio Brun, Melisa E. Magallanes, Carlos Martínez del Rio, Gregory A. Barrett-Wilt, William H. Karasov, Enrique Caviedes-Vidal

Publikováno v: Methods and Protocols, Vol 3, Iss 1, p 15 (2020)

A simple method for the identification of brush-border membrane α-glucosidases is described. The proteins were first solubilized and separated in a gel under native, non-denaturing, conditions. The gel was then incubated in substrate solutions (malt

Externí odkaz: https://doaj.org/article/974462d7939a489c9127b6e248864182

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Duplications and Functional Convergence of Intestinal Carbohydrate-Digesting Enzymes

Autor: Enrique Caviedes-Vidal, Carlos Martínez del Rio, Maude W. Baldwin, Antonio Brun, Daniel Mendez-Aranda, William H. Karasov, Melisa E Magallanes

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Vertebrate diets and digestive physiologies vary tremendously. Although the contribution of ecological and behavioral features to such diversity is well documented, the roles and identities of individual intestinal enzymes shaping digestive traits re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60fe2aff8fe83142d020cec1cb0e1cda
https://doi.org/10.1093/molbev/msaa034

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Rapid and parallel changes in activity and mRNA of intestinal peptidase to match altered dietary protein levels in juvenile house sparrows (

Autor: Antonio, Brun, Melisa E, Magallanes, William H, Karasov, Enrique, Caviedes-Vidal

Publikováno v: The Journal of experimental biology. 224(Pt 3)

Although dietary flexibility in digestive enzyme activity (i.e. reaction rate) is widespread in vertebrates, mechanisms are poorly understood. When laboratory rats are switched to a higher protein diet, the activities of apical intestinal peptidases

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::70a144f8ccff91558798b2f11552c0e0
https://pubmed.ncbi.nlm.nih.gov/33288529

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Intestinal α-glycosidase transcriptional responses during development and diet adjustment in altricial birds

Autor: Enrique Caviedes-Vidal, William H. Karasov, Claudia Gatica-Sosa, Paweł Brzęk, Melisa E Magallanes

Publikováno v: The Journal of experimental biology. 221(Pt 6)

We describe developmental changes in maltasic activity and its mRNA until adulthood, and in response to an increase in dietary starch. We studied house sparrows (Passer domesticus), which undergo a natural switch from insects to a starch-containing s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc20787873e451938f81c59caadb056c
https://pubmed.ncbi.nlm.nih.gov/29444840

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Gut microbial ecology of lizards: insights into diversity in the wild, effects of captivity, variation across gut regions and transmission

Autor: Joshua Brinkerhoff, Antonio Brun, Melisa E Magallanes, Alejandro Laspiur, Enrique Caviedes-Vidal, Juan Carlos Acosta, Seth R. Bordenstein, Kevin D. Kohl

Animals maintain complex associations with a diverse microbiota living in their guts. Our understanding of the ecology of these associations is extremely limited in reptiles. Here, we report an in-depth study into the microbial ecology of gut communi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::800da1d8107fae9cce8d602be571a345
Wiley Online Library

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Physiological and microbial adjustments to diet quality permit facultative herbivory in an omnivorous lizard

Autor: Antonio Brun, Juan Carlos Acosta, Kevin D. Kohl, Joshua Brinkerhoff, Melisa E Magallanes, Enrique Caviedes-Vidal, Alejandro Laspiur, Seth R. Bordenstein

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

While herbivory is a common feeding strategy in a number of vertebrate classes, less than 4% of squamate reptiles feed primarily on plant material. It has been hypothesized that physiological or microbial limitations may constrain the evolution of he

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d44279fa5ad94c24998f7d45cb854b35
http://jeb.biologists.org/content/219/12/1903

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