Article (Scientific journals)
Thiamine triphosphate and thiamine triphosphatase activities: from bacteria to mammals
Makarchikov, Alexander F; Lakaye, Bernard; Gulyai, I. E. et al.
2003In Cellular and Molecular Life Sciences, 60 (7), p. 1477-1488
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Keywords :
thiamine triphosphate; thiamine triphosphatase; bacteria; plants; animals; stress; adenylyl cyclase; vitamin B1
Abstract :
[en] In most organisms, the main form of thiamine is the coenzyme thiamine diphosphate. Thiamine triphosphate (ThTP) is also found in low amounts in most vertebrate tissues and can phosphorylate certain proteins. Here we show that ThTP exists not only in vertebrates but is present in bacteria, fungi, plants and invertebrates. Unexpectedly, we found that in Escherichia coli as well as in Arabidopsis thaliana, ThTP was synthesized only under particular circumstances such as hypoxia (E. coli) or withering (A. thaliana). In mammalian tissues, ThTP concentrations are regulated by a specific thiamine triphosphatase that we have recently characterized. This enzyme was found only in mammals. In other organisms, ThTP can be hydrolyzed by unspecific phosphohydrolases. The occurrence of ThTP from prokaryotes to mammals suggests that it may have a basic role in cell metabolism or cell signaling. A decreased content may contribute to the symptoms observed during thiamine deficiency.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Makarchikov, Alexander F
Lakaye, Bernard ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie humaine et pathologique
Gulyai, I. E.
Czerniecki, Jan ;  Université de Liège - ULiège > Biochimie et physiologie humaine et pathologique
Coumans, Bernard ;  Université de Liège - ULiège > CNCM/ Centre fac. de rech. en neurobiologie cell. et moléc.
Wins, Pierre
Grisar, Thierry ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie humaine et pathologique
Bettendorff, Lucien  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie humaine et pathologique
Language :
English
Title :
Thiamine triphosphate and thiamine triphosphatase activities: from bacteria to mammals
Publication date :
2003
Journal title :
Cellular and Molecular Life Sciences
ISSN :
1420-682X
eISSN :
1420-9071
Publisher :
Birkhauser Verlag Ag, Basel, Switzerland
Volume :
60
Issue :
7
Pages :
1477-1488
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 January 2009

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