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First published online September 14, 2007
Journal of Experimental Biology 210, 3440-3450 (2007)
Published by The Company of Biologists 2007
doi: 10.1242/jeb.007286
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Differences in membrane acyl phospholipid composition between an endothermic mammal and an ectothermic reptile are not limited to any phospholipid class

Todd W. Mitchell1,2, Kim Ekroos3, Stephen J. Blanksby4, Anthony J. Hulbert1,5 and Paul L. Else1,2,*

1 Metabolic Research Centre, University of Wollongong, NSW, 2522, Australia
2 School of Health Sciences, University of Wollongong, NSW, 2522, Australia
3 AstraZeneca R&D, 41383 Mölndal, Sweden
4 Department of Chemistry, University of Wollongong, NSW, 2522, Australia
5 School of Biological Sciences, University of Wollongong, NSW, 2522, Australia


Figure 1
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  		Fig. 1. Distribution of rat and lizard phospholipid classes in liver, kidney, heart and brain of the lizard (Trachydosaurus rugosus) and rat (Rattus norvegicus). Values are presented as mean percentages of total phospholipids. PC, phosphatidylcholine; PE, phosphatidylethanolamine; PS, phosphatidylserine; PI, phosphatidylinositol; PA, phosphatidyic acid; PG, phosphatidylglycerol.

 

Figure 2
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  		Figs 2. The distribution of the major phospholipid molecules of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylserine (PS) in liver of the lizard (Trachydosaurus rugosus) and rat (Rattus norvegicus). Significant differences between the lizard and rat for these molecules in all these tissues are presented in Table 3. Values are mean % ± s.e.m. of total phospholipid (nmol g–1 wet tissue). The FA shown in the left-most box is the predominant sn-1 FA with the predominant sn-2 FA shown in the right hand box. Molecules that contribute to less than 1.0% in each tissue are not shown but are included in any calculations.

 

Figure 3
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  		Fig. 3. The distribution of the major phospholipid molecules of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylserine (PS) in kidney of the lizard (Trachydosaurus rugosus) and rat (Rattus norvegicus). For further details, see legend to Fig. 2.

 

Figure 4
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  		Fig. 4. The distribution of the major phospholipid molecules of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylserine (PS) in heart of the lizard (Trachydosaurus rugosus) and rat (Rattus norvegicus). For further details, see legend to Fig. 2.

 

Figure 5
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  		Fig. 5. The distribution of the major phospholipid molecules of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylserine (PS) in brain of the lizard (Trachydosaurus rugosus) and rat (Rattus norvegicus). For further details, see legend to Fig. 2.

 

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© The Company of Biologists Ltd 2007