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  • Title: Possible role of calcium in phospholipid synthesis of Microsporum gypseum.
    Author: Giri S, Mago N, Bindra A, Khuller GK.
    Journal: Biochim Biophys Acta; 1994 Dec 08; 1215(3):337-4. PubMed ID: 7811720.
    Abstract:
    The effect of calcium on lipid synthesis in Microsporum gypseum was examined by growing these cells in calcium supplemented (1 mM to 10 mM) medium. Maximum incorporation of [14C]acetate into total lipids and phospholipids was observed in cells grown with 6 mM calcium. This was probably due to a 3-fold increase in total calcium levels as incorporation of label was inhibited in total lipids (33%) and phospholipids (20.5%) in calcium-grown cells which were preincubated with the calcium specific chelator ethylene glycolbis (beta-aminoethyl ester) N,N,N',N',-tetracetate (EGTA). Increased incorporation of [14C]acetate into phospholipids was further supported by increase in the activity of key phospholipid biosynthetic enzymes (glycerolkinase and glycerol-3-phosphate acyltransferase) as well as the increase in phospholipid content in calcium-grown cells, which suggests a correlation between increased calcium levels and phospholipid biosynthesis in M. gypseum.
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