The full-length cDNA sequence of Cip65 and the promoter sequence of CiIkBα were cloned and identified.
The expression of Cip65 was ubiquitous and significantly up-regulated after stimulation with poly I:C.
In vitro, Cip65 polypeptide had affinity with CiIκBα promoter sequence by gel mobility shift assays.
In vivo cotransfection experiment demonstrated that Cip65 played a positive role in the transcription of CiIkBα.