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Hormone-sensitive lipase is structurally related to acetylcholinesterase, bilesalt-stimulated lipase, and several fungal lipases. Building of a three-dimensional model for the catalytic domain of hormone-sensitive lipaseContreras, Juan Antonio ...Hormone-sensitive lipase is the key enzyme in the mobilization of fatty acids from adipose tissue, thereby playing a crucial role in the overall energy homeostasis in mammals. Its activity is ... stimulated by catecholamines through cAMP-dependent phosphorylation of a single serine, a process that is preventedby insulin. This regulatory property is unique to this enzyme among all known lipases and has been acquired during evolution through insertion of a regulatory module into an ancestral lipase. Sequence alignments have failed to detect significant homology between hormone-sensitive lipase and the rest of the mammalian lipases and esterases, to which this enzyme is only very distantly related. In the present work, we report the finding of a remarkable secondary structure homology between hormone-sensitive lipase and the enzymes from a superfamily of esterases and lipases that includes acetylcholinesterase, bile salt-stimulated lipase, and several fungal lipases.This finding, based on the identification of the secondary structure elements in the hormone-sensitive lipase sequence, has allowed us to constructa three-dimensional model for the catalytic domain of hormone-sensitive lipase. The model reveals the topological organization, predicts the components of the catalytic triad, suggests a three-dimensional localization of the regulatory module, and provides a valuable tool for the future study of structural and functional aspects of this metabolically important enzyme.Source: The Journal of biological chemistry. - ISSN 0021-9258 (Letn. 271, št. 49, 1996, str. 31426-31430)Type of material - article, component partPublish date - 1996Language - englishCOBISS.SI-ID - 21678809
Author
Contreras, Juan Antonio |
Karlsson, M. |
Osterlund, T. |
Laurell, Henrik |
Svensson, Anders |
Holm, Cecilia
Topics
Acetylcholinesterase |
Chemistry |
Amino Acid Sequence |
Bile Acids And Salts |
Pharmacology |
Binding Sites |
Cholesterol Esterase |
Lipase |
Chemistry |
Models, Chemical |
Models, Molecular |
Molecular Sequence Data |
Protein Conformation |
Protein Structure, Secondary |
Sequence Alignment |
Acetilholinesteraza |
Aminokislinsko zaporedje |
Beljakovinska konformacija |
Beljakovinska struktura sekundarna |
Holesterolna esteraza |
Lipaza |
Mesta vezave |
Modeli kemični |
Modeli molekularni |
Molekulsko zaporedje, podatki |
Zaporedje razvrstitev |
Žolčne kisline in soli
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Contreras, Juan Antonio | 28452 |
Karlsson, M. | ![]() |
Osterlund, T. | ![]() |
Laurell, Henrik | ![]() |
Svensson, Anders | ![]() |
Holm, Cecilia | ![]() |
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