Electronic Resource
Springer
Journal of comparative physiology
151 (1983), S. 191-198
ISSN:
1432-136X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary 1. Amino acids, glucose and glycogen were measured in locust rectal tissue. Proline was found in higher concentration (66 mM) than other metabolites. 2. Mitochondria were isolated from recta and characterized. They oxidize a variety of substrates; however, the highest state 3 rate of O2 consumption was obtained with 30 mM proline as a substrate. 3. An enzyme profile of the locust rectum was compared to that of locust flight muscle. The main differences were that the flight muscle had higher activities of 3-hydroxy-acyl-CoA dehydrogenase and NAD-dependent glycerol phosphate dehydrogenase and the rectum had higher activities of enzymes involved in amino acid metabolism. 4. Proline appears to be the major source of energy in the locust rectum in situ and its role in supporting the work of ion transport across this epithelium is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00689918
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