Human diadenosine triphosphate hydrolase: preliminary characterisation and comparison with the Fhit protein, a human tumour suppressor.

  • A C Asensio Department of Biochemistry and Molecular Biology, University of La Laguna, Tenerife, Canary Islands, Spain.;
  • C R Rodríguez-Ferrer
  • S Oaknin
  • P Rotllán

Abstract

Human platelets diadenosine triphosphatase was characterised and compared with the Fhit protein, a human tumour suppressor with diadenosine triphosphatase activity. Both enzymes exhibit similar Km, are similarly activated by Mg2+, Ca2+ and Mn2+, and inhibited by Zn2+ and suramin. However, they are differentially inhibited by Fhit antibodies and exhibit differences in gel-filtration behaviour.
Published
2000-06-30
Section
Articles