Abstract:
:Human erythrocyte acetylcholinesterase is an amphipathic enzyme whose hydrophobic membrane-binding domain can be selectively labeled with a lipophilic photoreagent and removed by digestion with papain. In this paper we demonstrate that methanolysis releases covalently bound fatty acids from the hydrophobic domain and thus confirm that this domain is a covalently linked glycolipid at the enzyme subunit C-terminus. About one mole of saturated and one mole of unsaturated fatty acids were released per mole of domain. Since the predominant unsaturated fatty acids (22:4 and 22:5) are minor components of the esterified fatty acid pool in human erythrocyte membranes, assembly of the glycolipid must involve a selected unsaturated fatty acid pool.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Roberts WL,Rosenberry TLdoi
10.1016/0006-291x(85)90950-7subject
Has Abstractpub_date
1985-12-17 00:00:00pages
621-7issue
2eissn
0006-291Xissn
1090-2104pii
0006-291X(85)90950-7journal_volume
133pub_type
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