LIPID-COMPOSITION OF SUBCELLULAR MEMBRANES FROM LARVAE AND PREPUPAE OF DROSOPHILA-MELANOGASTER

被引:55
作者
JONES, HE
HARWOOD, JL
BOWEN, ID
GRIFFITHS, G
机构
[1] UNIV WALES COLL CARDIFF,SCH PURE & APPL BIOL,CARDIFF CF1 1XL,S GLAM,WALES
[2] UNIV WALES COLL CARDIFF,DEPT BIOCHEM,CARDIFF CF1 1XL,S GLAM,WALES
关键词
D O I
10.1007/BF02535576
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Subcellular membranes were analyzed for their lipid composition and protein content at two developmental points representing the third instar wandering larvae and prepupal stages of Drosophila. At both stages, phosphatidylethanolamine (PE) and phosphatidylcholine (PC) were the major constituents with phosphatidylinositol (PI), phosphatidylserine (PS), diphosphatidylglycerol (DPG) and phosphatidic acid (PA) being relatively minor components. In total homogenates and in the nuclear-enriched fraction there was no significant difference in the phospholipid composition of the wandering larvae and prepupae. In mitochondria only a significant increase in the minor component PS was observed in the prepupae. In lysosomal membranes on the other hand, the relative abundance of the major components PE and PC increased in the prepupae although the molar ratios of the two lipids remained almost constant. The fatty acid composition of the phospholipids remained virtually unchanged in all of the fractions examined, including the lysosomes, and there was no evidence of lipid peroxidation. With regard to cellular degeneration and the involvement of lysosomes, we conclude that mechanisms other than gross modification of the lipid and/or lipid/protein ratio of their membranes are involved in the liberation of the acid phosphatase contents.
引用
收藏
页码:984 / 987
页数:4
相关论文
共 19 条
[1]  
[Anonymous], 2015, FREE RADICAL BIO MED
[2]  
Ansell G.B., 1982, PHOSPHOLIPIDS
[3]  
Barrett AJ, 1972, LYSOSOMES LABORATORY, P46
[4]   THE RELATION OF PROGRAMMED CELL-DEATH TO DEVELOPMENT AND REPRODUCTION - COMPARATIVE STUDIES AND AN ATTEMPT AT CLASSIFICATION [J].
BEAULATON, J ;
LOCKSHIN, RA .
INTERNATIONAL REVIEW OF CYTOLOGY-A SURVEY OF CELL BIOLOGY, 1982, 79 :215-235
[5]  
BEENAKKERS AMT, 1985, PROG LIPID RES, V24, P19
[6]  
BLIGH EG, 1959, CAN J BIOCHEM PHYS, V37, P911
[7]   MECHANISMS OF CELL-DEATH [J].
BOOBIS, AR ;
FAWTHROP, DJ ;
DAVIES, DS .
TRENDS IN PHARMACOLOGICAL SCIENCES, 1989, 10 (07) :275-280
[8]  
Bowen ID, 1990, PROGRAMMED CELL DEAT
[9]  
Davies M., 1975, LYSOSOMES BIOLOGY PA, V4, P305
[10]  
Gilbert L.I, 1967, ADV INSECT PHYSL, V4, P69, DOI [10.1016/S0065-2806(08)60208-8, DOI 10.1016/S0065-2806(08)60208-8]