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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2009.12.001
|2 doi
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|a pubmed24n0647.xml
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|a (DE-627)NLM194075168
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|a (NLM)20044264
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Ruiz-López, Noemí
|e verfasserin
|4 aut
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|a Characterization and partial purification of acyl-CoA:glycerol 3-phosphate acyltransferase from sunflower (Helianthus annuus L.) developing seeds
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.09.2010
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright 2009 Elsevier Masson SAS. All rights reserved.
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|a The glycerol 3-phosphate acyltransferase (GPAT, EC 2.3.1.15) from sunflower (Helianthus annuus L.) microsomes has been characterised and partially purified. The in vitro determination of activity was optimized, and the maximum value for GPAT activity identified between 15 and 20 days after flowering. The apparent Michaelis-Menten K(m) for the glycerol 3-phosphate was 354 muM. The preferred substrates were palmitoyl-CoA = linoleoyl-CoA > oleoyl-CoA with the lowest activity using stearoyl-CoA. High solubilisation was achieved using 0.75% Tween80 and the solubilised GPAT was partially purified by ion-exchange chromatography using a Hi-Trap DEAE FF column, followed by gel filtration chromatography using a Superose 12 HR column. The fraction containing the GPAT activity was analysed by SDS-PAGE and contained a major band of 60.1 kDa. Finally, evidence is provided which shows the role of GPAT in the asymmetrical distribution, between positions sn-1 and sn-3, of saturated fatty acids in highly saturated sunflower triacylglycerols. This work provides background information on the sunflower endoplasmic reticulum GPAT which may prove valuable for future modification of oil deposition in this important crop
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Acyl Coenzyme A
|2 NLM
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|a Fatty Acids
|2 NLM
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|a Glycerophosphates
|2 NLM
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|a Plant Oils
|2 NLM
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|a Triglycerides
|2 NLM
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|a alpha-glycerophosphoric acid
|2 NLM
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|a 9NTI6P3O4X
|2 NLM
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| 650 |
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|a Glycerol-3-Phosphate O-Acyltransferase
|2 NLM
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| 650 |
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|a EC 2.3.1.15
|2 NLM
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| 650 |
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|a 1-Acylglycerophosphocholine O-Acyltransferase
|2 NLM
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| 650 |
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|a EC 2.3.1.23
|2 NLM
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| 700 |
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|a Garcés, Rafael
|e verfasserin
|4 aut
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|a Harwood, John L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Martínez-Force, Enrique
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 48(2010), 2-3 vom: 12. Feb., Seite 73-80
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:48
|g year:2010
|g number:2-3
|g day:12
|g month:02
|g pages:73-80
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|u http://dx.doi.org/10.1016/j.plaphy.2009.12.001
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