Any feedback?
Please rate this page
(literature.php)
(0/150)

BRENDA support

Literature summary extracted from

  • Watt, M.J.; Spriet, L.L.
    Regulation and role of hormone-sensitive lipase activity in human skeletal muscle (2004), Proc. Nutr. Soc., 63, 315-322.
    View publication on PubMed

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.1.1.79 additional information Homo sapiens in the skeletal muscle at rest there is a high constitutive level of hormone-sensitive lipase activity, which is not a function of biopsy freezing. The combination of low adrenaline and Ca2+ levels and resting levels of insulin appears to dictate the levels of activity of hormone-sensitive lipase at rest. During the onset of low and moderate aerobic exercise enzyme activity is activated by contractions, in the apparent absence of increases in circulating adrenaline. However, adrenaline may contribute to the early activation of the enzyme during intense aerobic exercise. The contraction-induced activation appears to be related to the increase in protein kinase C and extracellular signal regulated kinase activity associated with Ca2+ and/or other unknown activators. As low- and moderate-intensity exercise continues beyond a few min, activation by adrenaline through the cAMP cascade and protein kinase A also appears to occur. With prolonged moderate-intensity exercise beyond 1–2 h and sustained high-intensity exercise, HSL activity decreases despite continuing increases in adrenaline, possibly as a result of increasing accumulation of free AMP, activation of AMP-activated kinase and phosphorylation of inhibitory sites on the hormone-sensitive lipase. Intramuscular factors dominate the control of hormone-sensitive lipase activity, with hormonal factors playing a smaller role ?
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
3.1.1.79 Homo sapiens
-
-
-

Posttranslational Modification

EC Number Posttranslational Modification Comment Organism
3.1.1.79 phosphoprotein
-
 Homo sapiens

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.1.1.79 skeletal muscle in the skeletal muscle at rest there is a high constitutive level of hormone-sensitive lipase activity, which is not a function of biopsy freezing. The combination of low adrenaline and Ca2+ levels and resting levels of insulin appears to dictate the levels of activity of hormone-sensitive lipase at rest. During the onset of low and moderate aerobic exercise enzyme activity is activated by contractions, in the apparent absence of increases in circulating adrenaline. However, adrenaline may contribute to the early activation of the enzyme during intense aerobic exercise. The contraction-induced activation appears to be related to the increase in protein kinase C and extracellular signal regulated kinase activity associated with Ca2+ and/or other unknown activators. As low- and moderate-intensity exercise continues beyond a few min, activation by adrenaline through the cAMP cascade and protein kinase A also appears to occur. With prolonged moderate-intensity exercise beyond 1–2 h and sustained high-intensity exercise, HSL activity decreases despite continuing increases in adrenaline, possibly as a result of increasing accumulation of free AMP, activation of AMP-activated kinase and phosphorylation of inhibitory sites on the hormone-sensitive lipase. Intramuscular factors dominate the control of hormone-sensitive lipase activity, with hormonal factors playing a smaller role Homo sapiens
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.1.1.79 additional information in the skeletal muscle at rest there is a high constitutive level of hormone-sensitive lipase activity, which is not a function of biopsy freezing. The combination of low adrenaline and Ca2+ levels and resting levels of insulin appears to dictate the levels of activity of hormone-sensitive lipase at rest. During the onset of low and moderate aerobic exercise enzyme activity is activated by contractions, in the apparent absence of increases in circulating adrenaline. However, adrenaline may contribute to the early activation of the enzyme during intense aerobic exercise. The contraction-induced activation appears to be related to the increase in protein kinase C and extracellular signal regulated kinase activity associated with Ca2+ and/or other unknown activators. As low- and moderate-intensity exercise continues beyond a few min, activation by adrenaline through the cAMP cascade and protein kinase A also appears to occur. With prolonged moderate-intensity exercise beyond 1–2 h and sustained high-intensity exercise, HSL activity decreases despite continuing increases in adrenaline, possibly as a result of increasing accumulation of free AMP, activation of AMP-activated kinase and phosphorylation of inhibitory sites on the hormone-sensitive lipase. Intramuscular factors dominate the control of hormone-sensitive lipase activity, with hormonal factors playing a smaller role Homo sapiens ?
-
 ?