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Table 1 Labelling results of conjugates with Eu 3+ and 111 In 3+

From: Straightforward thiol-mediated protein labelling with DTPA: Synthesis of a highly active 111In-annexin A5-DTPA tracer

Incubation method 111In3+labelling in % Eu3+labelling in %
2.4-fold excess of linker 4 46.2 36.7
8-fold excess of linker 4 53.1 36.2
24-fold excess of linker 4 58.6 41.7
for comparison:   
cys-anxA5 5 0.0 0.0
  1. In case of europium the yield was determined by measuring the fluorescence, in case of 111In3+ by radioactivity measurement. The numbers are percentages of labelled protein.