Recombinant Human Flap endonuclease 1 (FEN1), Homo sapiens (Human), E.coli, N-terminal 10xHis-tagged and C-terminal Myc-tagged, 50.0kDa, purity >85% as determined by SDS-PAGE.

Recombinant Human Flap endonuclease 1 (FEN1)

Recombinant Human Flap endonuclease 1 (FEN1) — Structure-specific nuclease with 5′-flap endonuclease and 5′-3′ exonuclease activities involved in DNA replication and repair. Purity >85%.

SKU: BCRECP-000660 Category:
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Product Specifications

Product SkuBCRECP-000660
Product DescriptionRecombinant Human Flap endonuclease 1 (FEN1) Protein is expressed from E.coli with N-terminal 10xHis-tagged and C-terminal Myc-tagged. It contains 1-380aa. [Accession | P39748].
Uniprot No.P39748
Gene NamesFEN1
PurityGreater than 85% as determined by SDS-PAGE.
Expression SystemE.coli
Expression Region1-380aa
SpeciesHomo sapiens (Human)
Tag InfoN-terminal 10xHis-tagged and C-terminal Myc-tagged
Molecular weight50.0kDa
ActivityPlease contact us to obtain bioactivity data.
BufferIf the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose.
StorageStore at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Research AreasEpigenetics and Nuclear Signaling

Function

Structure-specific nuclease with 5'-flap endonuclease and 5'-3' exonuclease activities involved in DNA replication and repair. During DNA replication, cleaves the 5'-overhanging flap structure that is generated by displacement synthesis when DNA polymerase encounters the 5'-end of a downstream Okazaki fragment. It enters the flap from the 5'-end and then tracks to cleave the flap base, leaving a nick for ligation.

Biological Context

Subcellular Location: Mitochondrion

Product Specifications

Recombinant Human Flap endonuclease 1 (FEN1) is a recombinant protein from Homo sapiens (Human), expressed in E.coli, covering amino acids 1-380aa, with N-terminal 10xHis-tagged and C-terminal Myc-tagged tag, molecular weight 50.0kDa, purity Greater than 85% as determined by SDS-PAGE.. Suitable for ELISA and Western Blot applications.

SDS-PAGE: Single band at expected molecular weight confirming purity.

ELISA: Suitable as coating antigen or detection standard.

Western Blot: Compatible with standard Western Blot protocols.

Protein Interaction: Validated for SPR (Surface Plasmon Resonance) and BLI (Bio-Layer Interferometry) studies.

Shipping: Shipped at ambient temperature. Lyophilized protein is stable during transit.

Storage: Store lyophilized protein at -20°C to -80°C. Reconstituted protein should be aliquoted and stored at -80°C. Avoid repeated freeze-thaw cycles.

Shelf Life: 12 months from date of receipt when stored as recommended.

Shipping Time: Orders placed before 2 PM EST ship same day. International orders typically deliver within 5-10 business days.

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Protein Biology

Function

Structure-specific nuclease with 5'-flap endonuclease and 5'-3' exonuclease activities involved in DNA replication and repair. During DNA replication, cleaves the 5'-overhanging flap structure that is generated by displacement synthesis when DNA polymerase encounters the 5'-end of a downstream Okazaki fragment. It enters the flap from the 5'-end and then tracks to cleave the flap base, leaving a nick for ligation. Also involved in the long patch base excision repair (LP-BER) pathway, by cleaving within the apurinic/apyrimidinic (AP) site-terminated flap. Acts as a genome stabilization factor that prevents flaps from equilibrating into structures that lead to duplications and deletions. Also possesses 5'-3' exonuclease activity on nicked or gapped double-stranded DNA, and exhibits RNase H activity. Also involved in replication and repair of rDNA and in repairing mitochondrial DNA

Subcellular Location

Mitochondrion

Subunit

Interacts with PCNA (PubMed:11430825, PubMed:15616578, PubMed:26760506, PubMed:9305916). Three molecules of FEN1 bind to one PCNA trimer with each molecule binding to one PCNA monomer (PubMed:15616578). PCNA stimulates the nuclease activity without altering cleavage specificity (PubMed:15616578). The C-terminal domain binds EP300; can bind simultaneously to both PCNA and EP300 (PubMed:11430825). Interacts with DDX11; this interaction is direct and increases flap endonuclease activity of FEN1 (PubMed:18499658). Interacts with WDR4; regulating its endonuclease activity (PubMed:26751069). Interacts with POLB (PubMed:19336415, PubMed:26760506)

Gene: FEN1  |  Organism: Homo sapiens  |  Synonyms: DNase IV; Flap structure-specific endonuclease 1; Maturation factor 1
Key Publications

Frequently Asked Questions

How do I order or inquire about this product?

Fill out the Online Inquiry form with your required quantity and specifications. You can also email sales@biocrestsci.com. Our team typically responds within 4 business hours with a quote and availability confirmation.

What is the shipping and delivery time?

Orders placed before 2 PM EST ship the same day. Domestic (US) delivery typically takes 2-3 business days. International orders deliver within 5-10 business days. All products are shipped at ambient temperature with appropriate packaging to ensure stability.

How should I store this recombinant protein?

Lyophilized proteins should be stored at -20°C to -80°C upon receipt. After reconstitution, aliquot and store at -80°C. Avoid repeated freeze-thaw cycles. Shelf life is 12 months from date of receipt when stored as recommended.

What quality controls are performed on your products?

Each product undergoes SDS-PAGE purity analysis (typically >85-95%), endotoxin testing, and bioactivity validation. Products are validated for ELISA, Western Blot, and SPR/BLI applications as specified on this product page. A Certificate of Analysis (CoA) is available upon request.

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