Article (Scientific journals)
Nonisotopic substrate for assaying both human zinc and NAD+-dependent histone deacetylases.
Heltweg, Birgit; Dequiedt, Franck; Verdin, Eric et al.
2003In Analytical Biochemistry, 319 (1), p. 42-8
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Keywords :
Animals; Hela Cells; Histone Deacetylases/analysis/isolation & purification/metabolism; Humans; Isotopes; Liver/enzymology; Molecular Structure; NAD/metabolism; Rats; Structure-Activity Relationship; Substrate Specificity; Zinc/metabolism
Abstract :
[en] Histone deacetylases (HDACs) are involved in the regulation of transcription and their inhibitors are a promising class of new anticancer drugs. We have previously reported Boc(Ac)Lys-AMC, also termed MAL, as a fluorescent substrate for HDACs. Now we present a modification of MAL called Z-MAL that is characterized by an increased rate of conversion by histone deacetylases of classes I and II and the recently discovered sirtuins (histone deacetylases class III). MAL and Z-MAL are the first nonradioactive substrates for class III enzymes. The new substrate Z-MAL allows for shorter assay times in inhibitor screening and is applicable to diverse sources of deacetylase activity even with completely different catalytic mechanisms. Interestingly, MAL shows some relative preference toward class II, indicating that subtype selectivity in small-molecule HDAC substrates might be obtained.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Heltweg, Birgit
Dequiedt, Franck  ;  Université de Liège - ULiège > GIGA-Research - Centre de Bio. Fond. - Section de Biologie cell. et moléc.
Verdin, Eric
Jung, Manfred
Language :
English
Title :
Nonisotopic substrate for assaying both human zinc and NAD+-dependent histone deacetylases.
Publication date :
2003
Journal title :
Analytical Biochemistry
ISSN :
0003-2697
eISSN :
1096-0309
Publisher :
Academic Press, Orlando, United States - Florida
Volume :
319
Issue :
1
Pages :
42-8
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 January 2011

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