title: Age- and activity-related changes in three proteinase enzymes of rat skeletal muscle.
abstract: The specific activities of three proteinases, cathepsins B, D and H, were measured in two skeletal-muscle types as a function of age (i.e. from large foetal life to old age), and in muscles immobilized at various lengths for 3 days. The activities of the lysosomal endopeptidases B and D, but not H, consistently changed in parallel with previously determined rates of protein breakdown, indicating a good and potentially useful correlation between the two.
mesh_terms: D000375:Aging; D000818:Animals; D002403:Cathepsins / Q000378:metabolism*; D007103:Immobilization; D024510:Muscle Development; D009124:Muscle Proteins / Q000378:metabolism; D009132:Muscles / Q000201:enzymology*; D005082:Physical Exertion; D051381:Rats
chemical_list: D009124:Muscle Proteins; D002403:Cathepsins