GFI1b Antibody

Essential proto-oncogenic transcriptional regulator necessary for development and differentiation of erythroid and megakaryocytic lineages. Transcriptional repressor or activator depending on both promoter and cell type context; represses promoter activity of SOCS1 and SOCS3 and thus, may regulate cytokine signaling pathways. Cooperates with GATA1 to repress target gene transcription, such as the apoptosis regulator BCL2L1; GFI1B silencing in leukemic cell lines markedly increase apoptosis rate. Inhibits down-regulation of MYC and MYB as well as the cyclin-dependent kinase inhibitor CDKN1A/P21WAF1 in IL6-treated myelomonocytic cells. Represses expression of GATA3 in T-cell lymphomas and inhibits GATA1-mediated transcription; as GATA1 also mediates erythroid GFI1B transcription, both GATA1 and GFI1B participate in a feedback regulatory pathway controlling the expression of GFI1B gene in erythroid cells. Suppresses GATA1-mediated stimulation of GFI1B promoter through protein interaction. Binds to gamma-satellite DNA and to its own promoter, auto-repressing its own expression. Alters histone methylation by recruiting histone methyltransferase to target genes promoters. Plays a role in heterochromatin formation.

8328

Q5VTD9

NP_001128503.1

Human, Mouse, Rat

GFI1b antibody was raised against a peptide sequence around aa.322~326 (H-R-E-S-Q) derived from Human GFI1b.

Unconjugated

Primary Antibodies

Stem Cell

Antibodies were purified by affinity-chromatography using epitope-specific peptide.

1 mg/mL

Antibody supplied in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.

None

Blue Ice

Store antibody at -20˚ C for up to one year.

38 kDa

This antibody detects endogenous level of total GFI1b protein.

Western Blot: 1:500~1:1000

GFI1B

Growth factor independent 1B transcription repressor

Homo sapiens

Osawa M., Yamaguchi T., Nakamura Y., Kaneko S., Onodera M., Sawada K., Jegalian A., Wu H., Nakauchi H., Iwama A. Blood 100:2769-2777 (2002) Huang D. -Y., Kuo Y. -Y., Chang Z. -F. Nucleic Acids Res. 33:5331-5342 (2005) Vassen L., Fiolka K., Moeroey T. EMBO J. 25:2409-2419 (2006)

BDPLT17, Gfi-1b

WB

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