KLF4 (Krueppel-like factor 4), also known as EZF (Epithelial zinc finger protein) and GKLF (Gut-enriched krueppel-like factor), belongs to the krueppel C2H2-type zinc-finger protein family. In addition to 3 C2H2-type zinc fingers responsible for DNA binding, KLF4 contains a 9aa-TAD (transactivation domain) motif that is found in a large number of yeast and animal transcription factors. KLF4 is a transcription factor that can act both as activator and as repressor. It recognizes a 5'-CACCC-3' core sequence. KLF4 binds to the promoter region of its own gene to activate its own transcription. KLF4 contributes to the down-regulation of p53/TP53 transcription and regulates the expression of key transcription factors during embryonic development. KLF4 plays an important role in maintaining embryonic stem (ES) cells , and in preventing their differentiation. KLF4 is equired for establishing the barrier function of the skin and for postnatal maturation and maintenance of the ocular surface. KLF4 is involved in the differentiation of epithelial cells and may also function in skeletal and kidney development. It is also implicated in multiple cancer types. OCT4, SOX2, c-Myc and KLF4 are the 4 reprogramming factors that together are sufficient to reprogram differentiated cells to an embryonic-like state termed iPS (induced pluripotent stem) cells. iPS cells exhibit the morphology and growth properties of ES cells and express ES cell marker genes. 

KLF4 (Krueppel-like factor 4), also known as EZF (Epithelial zinc finger protein) and GKLF (Gut-enriched krueppel-like factor), belongs to the krueppel C2H2-type zinc-finger protein family. In addition to 3 C2H2-type zinc fingers responsible for DNA binding, KLF4 contains a 9aa-TAD (transactivation domain) motif that is found in a large number of yeast and animal transcription factors. KLF4 is a transcription factor that can act both as activator and as repressor. It recognizes a 5'-CACCC-3' core sequence. KLF4 binds to the promoter region of its own gene to activate its own transcription. KLF4 contributes to the down-regulation of p53/TP53 transcription and regulates the expression of key transcription factors during embryonic development. KLF4 plays an important role in maintaining embryonic stem (ES) cells , and in preventing their differentiation. KLF4 is equired for establishing the barrier function of the skin and for postnatal maturation and maintenance of the ocular surface. KLF4 is involved in the differentiation of epithelial cells and may also function in skeletal and kidney development. It is also implicated in multiple cancer types. OCT4, SOX2, c-Myc and KLF4 are the 4 reprogramming factors that together are sufficient to reprogram differentiated cells to an embryonic-like state termed iPS (induced pluripotent stem) cells. iPS cells exhibit the morphology and growth properties of ES cells and express ES cell marker genes. 

 

Product Details

 

Gene Symbol: KLF4; EZF; GKLF

 

NCBI Gene ID: 9314

 

Uniprot Entry: O43474

 

Construct Details: Full length KLF4 gene (UniProt #O43474-1) is subcloned into the Lentiviral expression vector pLTC with an upstream CMV promoter and with or without a selection marker, which can be used for both transient and stable expression in mammalian cells.  It can be co-transfected with the LentiPAK DNA mix (SKU# LP-001) into HEK293 cells to produce high titer lentiviral particles. Multiple selection markers are available.

 

Vector Type: pLTC or pLTC-IRES-Marker (lentiviral expression vector containing a heterologous CMV promoter, see the vector map above)

 

Formulation: Supplied with 10 μg of endotoxin-free plasmid DNA at 200 ng/μl in sterile TE buffer (pH8.0)

 

Gene Insert Size: 1440 (bp)

 

Gene Insert Sequence:  

ATGAGGCAGCCACCTGGCGAGTCTGACATGGCTGTCAGCGACGCGCTGCTCCCATCTTTCTCCACGTTCGCGTCTGGCCC

GGCGGGAAGGGAGAAGACACTGCGTCAAGCAGGTGCCCCGAATAACCGCTGGCGGGAGGAGCTCTCCCACATGAAGCGAC

TTCCCCCAGTGCTTCCCGGCCGCCCCTATGACCTGGCGGCGGCGACCGTGGCCACAGACCTGGAGAGCGGCGGAGCCGGT

GCGGCTTGCGGCGGTAGCAACCTGGCGCCCCTACCTCGGAGAGAGACCGAGGAGTTCAACGATCTCCTGGACCTGGACTT

TATTCTCTCCAATTCGCTGACCCATCCTCCGGAGTCAGTGGCCGCCACCGTGTCCTCGTCAGCGTCAGCCTCCTCTTCGT

CGTCGCCGTCGAGCAGCGGCCCTGCCAGCGCGCCCTCCACCTGCAGCTTCACCTATCCGATCCGGGCCGGGAACGACCCG

GGCGTGGCGCCGGGCGGCACGGGCGGAGGCCTCCTCTATGGCAGGGAGTCCGCTCCCCCTCCGACGGCTCCCTTCAACCT

GGCGGACATCAACGACGTGAGCCCCTCGGGCGGCTTCGTGGCCGAGCTCCTGCGGCCAGAATTGGACCCGGTGTACATTC

CGCCGCAGCAGCCGCAGCCGCCAGGTGGCGGGCTGATGGGCAAGTTCGTGCTGAAGGCGTCGCTGAGCGCCCCTGGCAGC

GAGTACGGCAGCCCGTCGGTCATCAGCGTCAGCAAAGGCAGCCCTGACGGCAGCCACCCGGTGGTGGTGGCGCCCTACAA

CGGCGGGCCGCCGCGCACGTGCCCCAAGATCAAGCAGGAGGCGGTCTCTTCGTGCACCCACTTGGGCGCTGGACCCCCTC

TCAGCAATGGCCACCGGCCGGCTGCACACGACTTCCCCCTGGGGCGGCAGCTCCCCAGCAGGACTACCCCGACCCTGGGT

CTTGAGGAAGTGCTGAGCAGCAGGGACTGTCACCCTGCCCTGCCGCTTCCTCCCGGCTTCCATCCCCACCCGGGGCCCAA

TTACCCATCCTTCCTGCCCGATCAGATGCAGCCGCAAGTCCCGCCGCTCCATTACCAAGAGCTCATGCCACCCGGTTCCT

GCATGCCAGAGGAGCCCAAGCCAAAGAGGGGAAGACGATCGTGGCCCCGGAAAAGGACCGCCACCCACACTTGTGATTAC

GCGGGCTGCGGCAAAACCTACACAAAGAGTTCCCATCTCAAGGCACACCTGCGAACCCACACAGGTGAGAAACCTTACCA

CTGTGACTGGGACGGCTGTGGATGGAAATTCGCCCGCTCAGATGAACTGACCAGGCACTACCGTAAACACACGGGGCACC

GCCCGTTCCAGTGCCAAAAATGCGACCGAGCATTTTCCAGGTCGGACCACCTCGCCTTACACATGAAGAGGCATTTTTAA

 

 

Primers: Gene insert coding sequence can be confirmed by following primers:

(a) forward (or 5'-end) primer: 5’-CAAATGGGCGGTAGGCGTG-3’;

(b) reverse (or 3'-end) primer: 5’-CCAGGTTTCCGGGCCCTCAC-3’

 

 

Note: The sequence may vary due to the naturally occurring variants or mutations, such as single nucleotide polymorphism, or the artifact during PCR amplification.  High fidelity PCR systems should always be used. 

 

 

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.

 

Storage

 

The product is shipped at 4°C. Upon receipt, centrifuge the product briefly before opening the vial. It is recommended to store small aliquots at the temperature below –20°C for long-term storage and the product is stable for 6 months. 

 

 

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

 

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

 

References

 

1. J. Biol. Chem. 273:1026 (1998) 

2. Cell Growth Differ. 10:423 (1999)

3. Genomics 89:756 (2007) 

4. Cell 131:861 (2007)

5. J. Biol. Chem. 285:9180 (2010)

6. FASEB J. 27:432 (2013)

 

 

 

Documentation

 

Product datasheet (pdf) can be downloaded here: LTP0022-PDS.pdf

 

 

 

Additional supporting documents, including COA and MSDS are available upon request.

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.