GFI1b Antibody

Product Specifications

Background

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.

NCBI Gene ID

8328

Swiss Prot

Q5VTD9

Accession Number

NP_001128503.1

Host

Rabbit

Reactivity

Human, Mouse, Rat

Immunogen

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

Clonality

Polyclonal

Conjugation

Unconjugated

Type

Primary Antibodies

Field of Research

Stem Cell

Purification

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

Concentration

1 mg/mL

Buffer

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

Modification

None

Shipping Conditions

Blue Ice

Storage Conditions

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

Calculated Molecular Weight

38 kDa

Specificity

This antibody detects endogenous level of total GFI1b protein.

Applications Notes

Western Blot: 1:500~1:1000

Symbol

GFI1B

NCBI Official Name

Growth factor independent 1B transcription repressor

NCBI Organism

Homo sapiens

Background Reference 01

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)