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. 2004 Aug 7;271(Suppl 5):S273–S276. doi: 10.1098/rsbl.2004.0180

Four kingdoms on glacier ice: convergent energetic processes boost energy levels as temperatures fall.

Michael J Napolitano 1, Daniel H Shain 1
PMCID: PMC1810069  PMID: 15503992

Abstract

A diverse group of glacially obligate organisms coexist on temperate glaciers between Washington State and Alaska. A fundamental challenge for these and other cold-adapted species is the necessity to maintain an energy flux capable of sustaining life at low physiological temperatures. We show here that ice-adapted psychrophiles from four kingdoms (Animalia, Eubacteria, Fungi, Protista) respond to temperature fluctuations in a similar manner; namely, ATP levels and the total adenylate pool increase as temperatures fall (within their viable temperature limits, respectively), yet growth rate increases with temperature. By contrast, mesophilic representatives of each kingdom respond in an opposite manner (i.e. adenylates increase with temperature). These observations suggest that elevated adenylate levels in psychrophiles may offset inherent reductions in molecular diffusion at low physiological temperatures.

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Selected References

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  1. Atkinson D. E. The energy charge of the adenylate pool as a regulatory parameter. Interaction with feedback modifiers. Biochemistry. 1968 Nov;7(11):4030–4034. doi: 10.1021/bi00851a033. [DOI] [PubMed] [Google Scholar]
  2. D'Amico Salvino, Claverie Paule, Collins Tony, Georlette Daphné, Gratia Emmanuelle, Hoyoux Anne, Meuwis Marie-Alice, Feller Georges, Gerday Charles. Molecular basis of cold adaptation. Philos Trans R Soc Lond B Biol Sci. 2002 Jul 29;357(1423):917–925. doi: 10.1098/rstb.2002.1105. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. English T. E., Storey K. B. Enzymes of adenylate metabolism and their role in hibernation of the white-tailed prairie dog, Cynomys leucurus. Arch Biochem Biophys. 2000 Apr 1;376(1):91–100. doi: 10.1006/abbi.1999.1686. [DOI] [PubMed] [Google Scholar]
  4. Fedorow C. A., Churchill T. A., Kneteman N. M. Effects of hypothermic hypoxia on anaerobic energy metabolism in isolated anuran livers. J Comp Physiol B. 1998 Dec;168(8):555–561. doi: 10.1007/s003600050177. [DOI] [PubMed] [Google Scholar]
  5. Gould S. J., Eldredge N. Punctuated equilibrium comes of age. Nature. 1993 Nov 18;366(6452):223–227. doi: 10.1038/366223a0. [DOI] [PubMed] [Google Scholar]
  6. Marshall C. J. Cold-adapted enzymes. Trends Biotechnol. 1997 Sep;15(9):359–364. doi: 10.1016/S0167-7799(97)01086-X. [DOI] [PubMed] [Google Scholar]
  7. Napolitano Michael J., Nagele Robert G., Shain Daniel H. The ice worm, Mesenchytraeus solifugus, elevates adenylate levels at low physiological temperature. Comp Biochem Physiol A Mol Integr Physiol. 2004 Jan;137(1):227–235. doi: 10.1016/j.cbpb.2003.10.005. [DOI] [PubMed] [Google Scholar]
  8. Nichols D. S., Nichols P. D., Russell N. J., Davies N. W., McMeekin T. A. Polyunsaturated fatty acids in the psychrophilic bacterium Shewanella gelidimarina ACAM 456T: molecular species analysis of major phospholipids and biosynthesis of eicosapentaenoic acid. Biochim Biophys Acta. 1997 Aug 16;1347(2-3):164–176. doi: 10.1016/s0005-2760(97)00068-4. [DOI] [PubMed] [Google Scholar]
  9. Russell N. J. Psychrophilic bacteria--molecular adaptations of membrane lipids. Comp Biochem Physiol A Physiol. 1997 Nov;118(3):489–493. doi: 10.1016/s0300-9629(97)87354-9. [DOI] [PubMed] [Google Scholar]
  10. Salomon M., Buchholz F. Effects of temperature on the respiration rates and the kinetics of citrate synthase in two species of Idotea (Isopoda, Crustacea). Comp Biochem Physiol B Biochem Mol Biol. 2000 Jan;125(1):71–81. doi: 10.1016/s0305-0491(99)00158-3. [DOI] [PubMed] [Google Scholar]
  11. Shain D. H., Carter M. R., Murray K. P., Maleski K. A., Smith N. R., McBride T. R., Michalewicz L. A., Saidel W. M. Morphologic characterization of the ice worm Mesenchytraeus solifugus. J Morphol. 2000 Dec;246(3):192–197. doi: 10.1002/1097-4687(200012)246:3<192::AID-JMOR3>3.0.CO;2-B. [DOI] [PubMed] [Google Scholar]
  12. Smalås A. O., Leiros H. K., Os V., Willassen N. P. Cold adapted enzymes. Biotechnol Annu Rev. 2000;6:1–57. doi: 10.1016/s1387-2656(00)06018-x. [DOI] [PubMed] [Google Scholar]
  13. Willis J. S. Cold tolerance in mammalian cells. Symp Soc Exp Biol. 1987;41:285–309. [PubMed] [Google Scholar]

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