Abstract
Abstract— A comprehensive study has been undertaken on the subcellular and subsynaptosomal distribution of a number of markers for subcellular organelles in preparations from rat brain. Although the activity of most enzymatic markers was decreased by freezing and storage at ‐ 70oC, no significant changes were noted in the distribution of these activities. This demonstrates that contamination of brain fractions by subcellular organelles can be accurately assessed after freezing and thawing. A marked discrepancy was noted between the distribution of three putative markers for endoplasmic reticulum. CDP‐choline‐diacylglycerol cholinephosphotransferase (EC 2.7.8.1) activity was mainly limited to the microsomal fraction and was present to a lesser extent in the synaptosomal fraction than the other putative markers for endoplasmic reticulum. Estrone sulfate sulfohydrolase (EC 3.1.6.2) activity demonstrated a bimodal distribution between the crude nuclear and microsomal fractions. However, considerable activity was associated with the synaptosomal fraction. NADPH‐cytochrome c reductase (EC 2.3.1.15) activity sedimented in the microsomal and the synaptosomal fractions. Calculations based on the relative specific activities of the microsomal and synaptic plasma membrane fraction indicated that the contamination of the synaptic plasma membranes by endoplasmic reticulum was 44.5% (NADPH‐cytochrome c reductase), 38.0% (estrone sulfatase) and 9.0% (cholinephosphotransferase). Since it is believed that virtually all of the synthesis of phosphatidylcholine by cholinephosphotransferase occurs in the neuronal and glial cell bodies, it was concluded that cholinephosphotransferase is a satisfactory marker for the endoplasmic reticulum derived from these sources. The results suggest that NADPH‐cytochrome c reductase and estrone sulfatase may be present in the smooth endoplasmic reticulum system responsible for the fast transport of macromolecules along the axon to the nerve endings as well as in the endoplasmic reticulum of the cell bodies. The possible relation between that portion of the smooth endoplasmic reticulum involved in fast axonal transport and the GERL (Golgi, Endoplasmic Reticulum, Lysosomes) complex discovered by Novikoff and his coworkers (Novikoff, 1976) is discussed.
Bibliography
Possmayer, F., Kleine, L., Duwe, G., StewartâDeHaan, P. J., Wong, T., MacPherson, C. F. C., & Harding, P. G. R. (1979). DIFFERENCES IN THE SUBCELLULAR AND SUBSYNAPTOSOMAL DISTRIBUTION OF THE PUTATIVE ENDOPLASMIC RETICULUM MARKERS, NADPHâCYTOCHROME c REDUCTASE, ESTRONE SULFATE SULFOHYDROLASE AND CDPâCHOLINE DIACYLGLYCEROL CHOLINEPHOSPHOTRANSFERASE IN RAT BRAIN. Journal of Neurochemistry, 32(3), 889â906. Portico.
References
66
Referenced
19
10.1016/S0021-9258(18)92019-3
/ J. biol. Chem / Biosynthesis of long chain fatty acids by subcellular particles of mature brain by Aeberhard E. (1968)10.1083/jcb.61.1.201
10.1111/j.1471-4159.1967.tb09576.x
10.1016/S0022-2275(20)41238-6
/ J. Lipid Res / The colorimetric determination of ester groups in lipid extracts by Antonis A. (1960)10.1007/978-1-4684-0955-0_7
10.1083/jcb.61.1.188
10.1083/jcb.61.1.213
10.1111/j.1471-4159.1973.tb07561.x
10.1016/0005-2736(72)90365-3
10.1126/science.97.2525.451
10.1016/0005-2736(71)90117-9
10.1016/S0022-2275(20)39421-9
{'key': 'e_1_2_1_14_1', 'first-page': '79', 'volume-title': 'Biochemical Analysis of Membranes', 'author': 'Depierre J.', 'year': '1976'}
/ Biochemical Analysis of Membranes by Depierre J. (1976)10.1007/978-1-4899-7321-4_15
10.1016/0304-4165(77)90330-0
10.1042/bj1280337
10.1111/j.1471-4159.1977.tb09613.x
{'key': 'e_1_2_1_19_1', 'first-page': '111', 'volume-title': 'The Basic Neuro‐sciences', 'author': 'Droz B.', 'year': '1975'}
/ The Basic Neuro‐sciences by Droz B. (1975)10.1016/0006-8993(75)90282-6
10.1016/0006-8993(71)90532-4
10.1111/j.1432-1033.1969.tb00602.x
10.1111/j.1471-4159.1977.tb07723.x
10.1016/S0022-2275(20)39597-3
/ J. Lipid Res / Use of a filter‐paper disk assay in the measurement of lipid biosynthesis by Goldfine H. (1966)10.1111/j.1471-4159.1974.tb11591.x
10.1111/j.1471-4159.1969.tb05989.x
10.1007/978-1-4684-0955-0_17
10.1016/0005-2760(74)90249-5
{'key': 'e_1_2_1_29_1', 'first-page': '82', 'volume-title': 'Brain Function and Macromolecular Synthesis', 'author': 'Jakoubec B.', 'year': '1974'}
/ Brain Function and Macromolecular Synthesis by Jakoubec B. (1974)10.1016/0304-4165(77)90120-9
{'key': 'e_1_2_1_31_1', 'first-page': '94', 'volume-title': 'Synapses and Synaptosomes', 'author': 'Jones D. A.', 'year': '1975'}
/ Synapses and Synaptosomes by Jones D. A. (1975)10.1016/0006-8993(74)90356-4
10.1042/bj1010328
10.1016/0005-2760(73)90023-4
10.1016/S0021-9258(17)32785-0
/ J. biol. Chem / Identification of glycoproteins and proteins at synapses in the central nervous system by Kelly P. T.10.1111/j.1471-4159.1970.tb00495.x
10.1016/0014-4827(76)90381-5
10.1016/0005-2736(67)90005-3
10.1007/BF00237913
10.1016/S0021-9258(19)52451-6
10.1042/bj1120091
10.1146/annurev.bi.41.070172.001021
10.1016/0304-4157(75)90017-9
10.1042/bj1260805
/ Biochem. J / Can mitochondria and synaptosomes of guinea‐pig brain synthesize phospholipids by Miller E. K. (1972)10.1042/bj1260823
10.1042/bj1280331
10.1016/0005-2736(71)90002-2
10.1111/j.1471-4159.1973.tb07519.x
10.1073/pnas.73.8.2781
10.1083/jcb.2.6.671
10.1007/BF02531385
10.1042/bj1320381
/ Biochem. J / Regulation by cytidine nucleotides of the acylation of sn‐[14C]glycerol‐3‐phosphate by Possmayer F. (1973)10.1139/o77-088
/ Can. J. Biochem / Acyl specificity of CDP choline:1, 2‐diacy[glycerol cholinephosphotransferase in rat lung by Possmayer F. (1977){'key': 'e_1_2_1_54_1', 'first-page': '487', 'article-title': 'Cortisol induction of pulmonary maturation in the rabbit foetus', 'volume': '166', 'author': 'Possmayer F.', 'year': '1977', 'journal-title': 'Biochem. J'}
/ Biochem. J / Cortisol induction of pulmonary maturation in the rabbit foetus by Possmayer F. (1977)10.1007/BF02668129
10.1111/j.1471-4159.1967.tb09512.x
10.1016/0002-9378(77)90250-2
10.1016/0005-2760(70)90222-5
10.1083/jcb.32.2.415
10.1042/bj1580631
/ Biochem. J / The intracellular distribution of arylsulphate‐C and oestrogen sulphatase activities in rat kidney and spleen by Thomas S. B. (1976)10.1111/j.1471-4159.1976.tb01538.x
{'key': 'e_1_2_1_62_1', 'first-page': '141', 'article-title': 'Three‐dimensional distribution of smooth endoplasmic reticulum in myelinated axons', 'volume': '25', 'author': 'Tsukita S.', 'year': '1976', 'journal-title': 'J. Electron Microsc'}
/ J. Electron Microsc / Three‐dimensional distribution of smooth endoplasmic reticulum in myelinated axons by Tsukita S. (1976)10.1146/annurev.bi.43.070174.001331
10.1016/0005-2736(71)90109-X
10.1016/0005-2760(74)90168-4
10.1007/978-1-4899-7321-4_14
10.1016/S0021-9258(18)67875-5
Dates
Type | When |
---|---|
Created | 18 years, 10 months ago (Oct. 5, 2006, 5:34 a.m.) |
Deposited | 1 year, 9 months ago (Nov. 4, 2023, 2:33 p.m.) |
Indexed | 1 year, 9 months ago (Nov. 4, 2023, 3:10 p.m.) |
Issued | 46 years, 5 months ago (March 1, 1979) |
Published | 46 years, 5 months ago (March 1, 1979) |
Published Online | 18 years, 10 months ago (Oct. 5, 2006) |
Published Print | 46 years, 5 months ago (March 1, 1979) |
@article{Possmayer_1979, title={DIFFERENCES IN THE SUBCELLULAR AND SUBSYNAPTOSOMAL DISTRIBUTION OF THE PUTATIVE ENDOPLASMIC RETICULUM MARKERS, NADPH‐CYTOCHROME c REDUCTASE, ESTRONE SULFATE SULFOHYDROLASE AND CDP‐CHOLINE DIACYLGLYCEROL CHOLINEPHOSPHOTRANSFERASE IN RAT BRAIN}, volume={32}, ISSN={1471-4159}, url={http://dx.doi.org/10.1111/j.1471-4159.1979.tb04573.x}, DOI={10.1111/j.1471-4159.1979.tb04573.x}, number={3}, journal={Journal of Neurochemistry}, publisher={Wiley}, author={Possmayer, Fred and Kleine, Leonard and Duwe, Gail and Stewart‐DeHaan, P. Jill and Wong, Tanya and MacPherson, Catherine F. C. and Harding, Paul G. R.}, year={1979}, month=mar, pages={889–906} }