Pre-B-cell leukemia transcription factor-interacting protein 1 (PBXIP1)

Regulator of pre-B-cell leukemia transcription factors (BPXs) function. Inhibits the binding of PBX1-HOX complex to DNA and blocks the transcriptional activity of E2A-PBX1.

Tethers estrogen receptor-alpha (ESR1) to microtubules and enables them to influence estrogen receptors-alpha signaling. .