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1-8 of 8
Keywords: enzymes
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Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2024) 227 (16): jeb247497.
Published: 21 August 2024
... waterfalls that maintain lower temperatures. We aimed to understand the effects of temperature on locomotor performance and on the activity of metabolic enzymes that support performance in tadpoles sampled in four different populations. Moreover, we measured several aspects of thermoregulation, including...
Includes: Supplementary data
Journal Articles
Tertius A. Kohn, Samantha Knobel, Byron Donaldson, Kathryn M. van Boom, Dee M. Blackhurst, James M. Peart, Jørgen Jensen, Adrian S. W. Tordiffe
Journal:
Journal of Experimental Biology
J Exp Biol (2024) 227 (15): jeb247284.
Published: 1 August 2024
...) and 3-hydroxyacyl co-enzyme A dehydrogenase (30±11 versus 47±15 µmol min −1 g −1 protein, P <0.05) activities were lower in cheetahs than in humans, whereas lactate dehydrogenase activity was 6 times higher in cheetahs (2159±827 versus 382±161 µmol min −1 g −1 protein, P <0.001). The activities...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2009) 212 (14): 2167–2175.
Published: 15 July 2009
... for amphibians that hibernate on land. Accordingly, in the Andean toad( Bufo spinulosus ), we investigated the effect of short-term fasting and hibernation on the hydrolytic activity of digestive enzymes, histology of the small intestine, gross morphology of digestive and other internal organs and standard...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2008) 211 (1): 128–137.
Published: 1 January 2008
...H. M. Levesque; M. A. Shears; G. L. Fletcher; T. W. Moon SUMMARY Atlantic salmon ( Salmo salar ) made transgenic for growth hormone(GH) and non-transgenic salmon were sampled at 4 and 7 months of age to estimate myogenic factors, satellite cell proliferation and metabolic enzyme activities...
Journal Articles
Raul K. Suarez, Charles-A. Darveau, Kenneth C. Welch, Jr., Diane M. O'Brien, David W. Roubik, Peter W. Hochachka
Journal:
Journal of Experimental Biology
J Exp Biol (2005) 208 (18): 3573–3579.
Published: 15 September 2005
... program to investigate the size-dependence of flight energetics in Panamanian orchid bees. We succeeded in measuring rates of O 2 consumption and CO 2 production in vivo during hovering flight, as well as maximal activities( V max values) in vitro of key enzymes in flight muscle energy metabolism in nine...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (1991) 156 (1): 407–418.
Published: 1 March 1991
.... In all cases, hepatocytes with the lowest density (less than 1.040 g ml − 1 ) were more oxidative in scope, as judged by the activities of mitochondrial enzymes (citrate synthase, aspartate aminotransferase, glutamate dehydrogenase); activities of these enzymes (normalised to cell protein) were...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (1991) 155 (1): 469–485.
Published: 1 January 1991
...Ralph A. Ferguson; Kenneth B. Storey ABSTRACT Studies were undertaken in vitro and in vivo to assess the maximal activities of 26 glycolytic and associated enzymes of rainbow trout ( Oncorhynchus mykiss ) red cells. The red cells possess a complete sequence of glycolytic enzymes capable...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (1990) 154 (1): 475–489.
Published: 1 November 1990
... and acid-base status, all of which remained at in vivo levels over the 2h incubation period. Enzymes diagnostic of glycolysis, the tricarboxylic acid (TCA) cycle and phosphagen metabolism were all present-in significant amounts in red blood cells. In direct comparisons of 14 C-labelled substrates at normal...