- transcription factor AP-1 complex
A heterodimeric transcription factor complex composed of proteins from the c-Fos, c-Jun, activating transcription factor (ATF) or JDP families. The subunits contain a basic leucine zipper (bZIP) domain that is essential for dimerization and DNA binding. Jun-Fos heterodimers bind preferentially to a heptamer consensus sequence (TPA responsive element (TRE)), whereas Jun-ATF dimers bind the cyclic AMP responsive element (CRE) to regulate transcription of target genes.
- nucleoside oxidase activity
Catalysis of the reactions: inosine + O2 = 9-riburonosylhypoxanthine + 2 H2O; (1a) 2 inosine + O2 = 2 5'-dehydroinosine + 2 H2O, and (1b) 2 5'-dehydroinosine + O2 = 2 9-riburonosylhypoxanthine + 2 H2O.