GFI1B Protein (AA 1-330) (Strep Tag)

Catalog No. ABIN3092770

Product Details

Target: GFI1B (Growth Factor Independent 1B Transcription Repressor (GFI1B))

Protein Type: Recombinant

Protein Characteristics: AA 1-330

Origin: Human

Source: Tobacco (Nicotiana tabacum)

Purification tag / Conjugate: This GFI1B protein is labelled with Strep Tag.

Application: ELISA, Western Blotting (WB), SDS-PAGE (SDS)

Sequence: MPRSFLVKSK KAHTYHQPRV QEDEPLWPPA LTPVPRDQAP SNSPVLSTLF PNQCLDWTNL KREPELEQDQ NLARMAPAPE GPIVLSRPQD GDSPLSDSPP FYKPSFSWDT LATTYGHSYR QAPSTMQSAF LEHSVSLYGS PLVPSTEPAL DFSLRYSPGM DAYHCVKCNK VFSTPHGLEV HVRRSHSGTR PFACDICGKT FGHAVSLEQH THVHSQERSF ECRMCGKAFK RSSTLSTHLL IHSDTRPYPC QFCGKRFHQK SDMKKHTYIH TGEKPHKCQV CGKAFSQSSN LITHSRKHTG FKPFSCELCT KGFQRKVDLR RHRESQHNLK
Sequence without tag. The proposed Strep-Tag is based on experience s with the expression system, a different complexity of the protein could make another tag necessary. In case you have a special request, please contact us.

Characteristics: Key Benefits:

• Made in Germany - from design to production - by highly experienced protein experts.
• Protein expressed with ALiCE® and purified by multi-step, protein-specific process to ensure correct folding and modification.
• These proteins are normally active (enzymatically functional) as our customers have reported (not tested by us and not guaranteed).
• State-of-the-art algorithm used for plasmid design (Gene synthesis).

This protein is a made-to-order protein and will be made for the first time for your order. Our experts in the lab will ensure that you receive a correctly folded protein.

The big advantage of ordering our made-to-order proteins in comparison to ordering custom made proteins from other companies is that there is no financial obligation in case the protein cannot be expressed or purified.

Expression System:

• ALiCE®, our Almost Living Cell-Free Expression System is based on a lysate obtained from Nicotiana tabacum c.v.. This contains all the protein expression machinery needed to produce even the most difficult-to-express proteins, including those that require post-translational modifications.
• During lysate production, the cell wall and other cellular components that are not required for protein production are removed, leaving only the protein production machinery and the mitochondria to drive the reaction. During our lysate completion steps, the additional components needed for protein production (amino acids, cofactors, etc.) are added to produce something that functions like a cell, but without the constraints of a living system - all that's needed is the DNA that codes for the desired protein!

Concentration:

• The concentration of our recombinant proteins is measured using the absorbance at 280nm.
• The protein's absorbance will be measured in several dilutions and is measured against its specific reference buffer.
• We use the Expasy's ProtParam tool to determine the absorption coefficient of each protein.

Purification: Two step purification of proteins expressed in Almost Living Cell-Free Expression System (ALiCE®):

1. In a first purification step, the protein is purified from the cleared cell lysate using StrepTag capture material. Eluate fractions are analyzed by SDS-PAGE.
2. Protein containing fractions of the best purification are subjected to second purification step through size exclusion chromatography. Eluate fractions are analyzed by SDS-PAGE and Western blot.

Purity: >80 % as determined by SDS PAGE, Size Exclusion Chromatography and Western Blot.

Endotoxin Level: Low Endotoxin less than 1 EU/mg (< 0.1 ng/mg)

Grade: Crystallography grade

Application Details

Application Notes: In addition to the applications listed above we expect the protein to work for functional studies as well. As the protein has not been tested for functional studies yet we cannot offer a guarantee though.

Comment:

ALiCE®, our Almost Living Cell-Free Expression System is based on a lysate obtained from Nicotiana tabacum c.v.. This contains all the protein expression machinery needed to produce even the most difficult-to-express proteins, including those that require post-translational modifications.
During lysate production, the cell wall and other cellular components that are not required for protein production are removed, leaving only the protein production machinery and the mitochondria to drive the reaction. During our lysate completion steps, the additional components needed for protein production (amino acids, cofactors, etc.) are added to produce something that functions like a cell, but without the constraints of a living system - all that's needed is the DNA that codes for the desired protein!

Restrictions: For Research Use only

Handling

Format: Liquid

Buffer: The buffer composition is at the discretion of the manufacturer. If you have a special request, please contact us.

Handling Advice: Avoid repeated freeze-thaw cycles.

Storage: -80 °C

Storage Comment: Store at -80°C.

Expiry Date: Unlimited (if stored properly)

Target Details

Target: GFI1B (Growth Factor Independent 1B Transcription Repressor (GFI1B))

Alternative Name: GFI1B (GFI1B Products)

Synonyms: GFI1B Protein, GFI Protein, znf544 Protein, MGC80648 Protein, Gfi-1B Protein, growth factor independent 1B transcriptional repressor Protein, growth factor independent 1B transcription repressor L homeolog Protein, Zinc finger protein Gfi-1b Protein, growth factor independent 1B Protein, GFI1B Protein, Gfi1b Protein, gfi1b.L Protein, gfi1b Protein

Background: Zinc finger protein Gfi-1b (Growth factor independent protein 1B) (Potential regulator of CDKN1A translocated in CML),FUNCTION: Essential proto-oncogenic transcriptional regulator necessary for development and differentiation of erythroid and megakaryocytic lineages. Component of a RCOR-GFI-KDM1A-HDAC complex that suppresses, via histone deacetylase (HDAC) recruitment, a number of genes implicated in multilineage blood cell development and controls hematopoietic differentiation. 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. {ECO:0000269|PubMed:12351384, ECO:0000269|PubMed:16177182, ECO:0000269|PubMed:16688220, ECO:0000269|PubMed:16782810, ECO:0000269|PubMed:17156408, ECO:0000269|PubMed:17272506, ECO:0000269|PubMed:17420275}.

Molecular Weight: 37.5 kDa

UniProt: Q5VTD9

Pathways: Cellular Response to Molecule of Bacterial Origin