Anti-GFI1 Antibody Picoband®

Zinc finger protein Gfi-1 is a transcriptional repressor that in humans is encoded by the GFI1 gene. It is mapped to 1p22.1. This gene encodes a nuclear zinc finger protein that functions as a transcriptional repressor. This protein plays a role in diverse developmental contexts, including hematopoiesis and oncogenesis. It functions as part of a complex along with other cofactors to control histone modifications that lead to silencing of the target gene promoters. Mutations in this gene cause autosomal dominant severe congenital neutropenia, and also dominant nonimmune chronic idiopathic neutropenia of adults, which are heterogeneous hematopoietic disorders that cause predispositions to leukemias and infections. Multiple alternatively spliced variants, encoding the same protein, have been identified for this gene.

Transcription repressor essential for hematopoiesis. Functions in a cell-context and development-specific manner. Binds to 5'-TAAATCAC[AT]GCA-3' in the promoter region of a large number of genes. Component of several complexes, including the EHMT2-GFI1-HDAC1, AJUBA-GFI1-HDAC1 and RCOR-GFI-KDM1A-HDAC complexes, that suppress, via histone deacetylase (HDAC) recruitment, a number of genes implicated in multilineage blood cell development. Regulates neutrophil differentiation, promotes proliferation of lymphoid cells, and is required for granulocyte development. Mediates, together with U2AF1L4, the alternative splicing of CD45 and controls T-cell receptor signaling. Regulates the endotoxin-mediated Toll-like receptor (TLR) inflammatory response by antagonizing RELA. Cooperates with CBFA2T2 to regulate ITGB1-dependent neurite growth. Controls cell-cycle progression by repressing CDKNIA/p21 transcription in response to TGFB1 via recruitment of GFI1 by ZBTB17 to the CDKNIA/p21 and CDKNIB promoters. Required for the maintenance of inner ear hair cells.

1. Bell, D. W., Taguchi, T., Jenkins, N. A., Gilbert, D. J., Copeland, N. G., Gilks, C. B., Zweidler-McKay, P., Grimes, H. L., Tsichlis, P. N., Testa, J. R. Chromosomal localization of a gene, GFI1, encoding a novel zinc finger protein reveals a new syntenic region between man and rodents. Cytogenet. Cell Genet. 70: 263-267, 1995. 2. Duan, Z., Horwitz, M. Targets of the transcriptional repressor oncoprotein Gfi-1. Proc. Nat. Acad. Sci. 100: 5932-5937, 2003. Note: Erratum: Proc. Nat. Acad. Sci. 108: 16134 only, 2011. 3. Gilks, C. B., Bear, S. E., Grimes, H. L., Tsichlis, P. N. Progression of interleukin-2 (IL-2) -dependent rat T cell lymphoma lines to IL-2-independent growth following activation of a gene (Gfi1) encoding a novel zinc finger protein. Molec. Cell Biol. 13: 1759-1768, 1993.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.