MeSH definition : A TALE-type homeodomain protein and transcription factor that binds the DNA sequence
5'-ATCAATCAA-3'. It forms a heterodimer with MEIS1 TRANSCRIPTION FACTOR and functions
as a transcriptional activator of HOMEOBOX PROTEIN NKX-2.5 and ELONGIN A, and as a
transcriptional repressor of CDKN2B PROTEIN, in the regulation of developmental and
morphogenetic processes such as spleen and limb development. Chromosome translocations
involving the PBX1 and TCF3 genes occur in cases of pre-B-cell ACUTE LYMPHOID LEUKEMIA.;
MeSH synonym : Pre B Cell Leukemia Transcription Factor 1; PBX1 Homeobox Protein; Homeobox Protein, PBX1; Pre-B-Cell Leukemia Homeobox 1 Protein; Pre B Cell Leukemia Homeobox 1 Protein;
A TALE-type homeodomain protein and transcription factor that binds the DNA sequence
5'-ATCAATCAA-3'. It forms a heterodimer with MEIS1 TRANSCRIPTION FACTOR and functions
as a transcriptional activator of HOMEOBOX PROTEIN NKX-2.5 and ELONGIN A, and as a
transcriptional repressor of CDKN2B PROTEIN, in the regulation of developmental and
morphogenetic processes such as spleen and limb development. Chromosome translocations
involving the PBX1 and TCF3 genes occur in cases of pre-B-cell ACUTE LYMPHOID LEUKEMIA.