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Stigmatellin Chemical Structure

Stigmatellin

Data Sheet For research use only. Not for human use.
Cat. No. :BCP25651CAS No. :91682-96-1Purity:98%
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  • Chemical Properties&Biological Activity
CAS No. 91682-96-1 Cat. No. BCP25651
Name Stigmatellin
Synonyms
SMILES CC=C(C)C=CC=CC(C(C)C(C(C)CCC1=C(C(=O)C2=C(O1)C(=C(C=C2OC)OC)O)C)OC)OC
Chemical Name
Formula C30H42O7 M. Wt 514.65
Purity 98% Storage Store at 4-8°C
Description Stigmatellin, a chromone inhibitor acting at the Q0 center of the bc1 complex, binds to the heme b-566 domain of cytochrome b as well as to the Fe2S2 protein. Its binding induces a shift of the alpha-band of heme b-566 to 568 nm. It does not influence the ligand field of the heme b-562 center. Concomitant with the red shift, stigmatellin gives rise to an alteration of the EPR line shape of the Fe2S2 cluster, namely linewidth narrowing and g value shifts at all 3 principal values. The midpoint redox potential of the Fe2S2 protein is shifted from 290 to 540 mV.
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