Protein function: 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 allows them to influence estrogen receptors-alpha signaling. [The UniProt Consortium]
synthetic peptide. The epitope recognized by A301-628A-T maps to a region between residue 1 and 50 of human hematopoietic PBX-interacting protein using the numbering given in entry NP_065385.2 (GeneID 57326).