Y. Ohmiya et al., BIOLUMINESCENCE ACTIVITY OF COELENTERAZINE ANALOGS AFTER INCORPORATION INTO RECOMBINANT APOAEQUORIN, Chemistry Letters, (12), 1993, pp. 2149-2152
Of twenty-seven synthetic analogues of coelenterazine tested for biolu
minescence activity with recombinant apoaequorin, eleven showed activi
ty, but the best activity was obtained with celenterazine incorporated
into wild type apoaequorin and into apoaequorin with all three cystei
n residues replaced by serine.