FAC1 Antibody – Mouse Monoclonal

This gene was identified by the reactivity of its encoded protein to a monoclonal antibody prepared against brain homogenates from patients with Alzheimer's disease. Analysis of the original protein (fetal Alz-50 reactive clone 1, or FAC1), identified as an 810 aa protein containing a DNA-binding domain and a zinc finger motif, suggested it might play a role in the regulation of transcription. High levels of FAC1 were detected in fetal brain and in patients with neurodegenerative diseases. The protein encoded by this gene is actually much larger than originally thought, and it also contains a C-terminal bromodomain characteristic of proteins that regulate transcription during proliferation. The encoded protein is highly similar to the largest subunit of the Drosophila NURF (nucleosome remodeling factor) complex. In Drosophila, the NURF complex, which catalyzes nucleosome sliding on DNA and interacts with sequence-specific transcription factors, is necessary for the chromatin remodeling required for transcription. Two alternative transcripts encoding different isoforms have been described completely. [provided by RefSeq, Jul 2008]

FALZ: Histone-binding component of NURF (nucleosome-remodeling factor), a complex which catalyzes ATP-dependent nucleosome sliding and facilitates transcription of chromatin. Specifically recognizes H3 tails trimethylated on 'Lys-4' (H3K4me3), which mark transcription start sites of virtually all active genes. May also regulate transcription through direct binding to DNA or transcription factors. Belongs to the PBTF family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription factor; DNA-binding

Chromosomal Location of Human Ortholog: 17q24.3

Cellular Component: nucleoplasm; cytoplasm; nucleus

Molecular Function: DNA-dependent ATPase activity; protein binding; zinc ion binding; sequence-specific DNA binding; transcription factor binding

Biological Process: anterior/posterior pattern formation; chromatin remodeling; embryonic placenta development; regulation of transcription, DNA-dependent; transcription, DNA-dependent; positive regulation of transcription, DNA-dependent; brain development; negative regulation of transcription from RNA polymerase II promoter; endoderm development