HERV-K

Endogenous retrovirus K Envelope Human Recombinant
Cat. No.
BT19585
Source

Escherichia Coli.

Synonyms
Appearance

Sterile Filtered clear solution.

Purity

Protein is >90% pure as determined by SDS PAGE.

Usage

THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY.They may not be used as drugs,agricultural or pesticidal products, food additives or household chemicals.

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In Stock

Description

The E.Coli derived HERV-K recombinant truncated protein is fused to a Six histidine tag at C-terminus and has a MW of 51.5kDa (pI 9.06).

Product Specs

Introduction
HERVK is associated with several tumors as a passenger virus, and anti-retroviral therapy targeting amyotrophic lateral sclerosis (ALS) has shown promise in reducing ALS symptoms. Numerous viral sequences reside in the human genome but remain dormant. However, these viruses can be activated under pathological conditions. Human Endogenous Retrovirus-K is expressed in the neurons of a subset of ALS patients. The envelope protein of HERVK can lead to neuronal degeneration, and transgenic animals expressing this protein develop an ALS-like syndrome, potentially triggered by nucleolar dysfunction in motor neurons. The reactivation of HERVK is regulated by the transcription factor TDP-43. Consequently, therapeutic strategies targeting this virus could potentially modify the disease course.
Description
This recombinant HERV-K protein, derived from E. coli, is a truncated version fused to a C-terminal Six-histidine tag. It has a molecular weight of 51.5 kDa and an isoelectric point of 9.06.
Purity
The protein purity is greater than 90% as determined by SDS-PAGE.
Physical Appearance
The product is a sterile-filtered, clear solution.
Formulation
The protein is supplied in 10 mM Tris-HCl buffer at pH 7.2.
Stability
While HERV-K remains stable at 4°C for up to one week, storage below -18°C is recommended. Avoid repeated freeze-thaw cycles.
Applications
The use of this product for detecting Human Endogenous Retrovirus K in individuals has not been validated.
Source

Escherichia Coli.

Amino Acid Sequence

MWTVPSFTND SYQVYNVFST NSFQLLTVKR TPHEAWRVPL TTKTNKTKGL PDCPKKPTNG PFIVTSILWD NCNAPKAVVL QTLAMGIVID WAPKGHYWQD CSSKNTLCSE FIYSLDYIEH GWQSYTMRQR VSPYPFKWMD TGIAPPRPKI IHPFFTPEHP ELWKLAAALS GIKIWNTTYQ LLRTKTKTPT FNITLISEWV IPIRSCVKPP YMLLVGNIIM MPDAQTIECH NCKLFTCIDA TFNPTTSILL VRAREGVWIP VSLHRPWESS PSIHIVNEVL KDILKRTKRF IFTLIAVLAG LLAVTATAAT AGVAIRSSVQ TAHYVEACQK NSSRLWNSQA QIDQKLANQI NDLRQSVTWL GDRVMNLQHR MQLQCDWNTS DYCITPYAYN QDQHSWENVS RHLKAWDDNL TLDISQLKEQIFEASQAHLS TVPGSHIFEG ITKQLPDFNP FKWLKPVRGS LLLLALLILV CLCCLLLVCRCL.

Product Science Overview

Introduction to Human Endogenous Retroviruses (HERVs)

Human endogenous retroviruses (HERVs) are remnants of ancient viral infections that have integrated into the human genome. These viral sequences are passed down through generations and now constitute approximately 8% of the human genome . HERVs are classified based on the tRNA primer binding site used to initiate reverse transcription, and they are generally defective in viral replication due to accumulated mutations and deletions .

HERV-K: A Unique Subgroup

Among the various HERV families, HERV-K (HML-2) is one of the most recently integrated and biologically active groups. HERV-K retains open reading frames (ORFs) capable of encoding functional proteins, including the Gag, Pol, and Env proteins . The envelope (Env) protein of HERV-K is particularly noteworthy as it plays a crucial role in viral entry and has been implicated in various physiological and pathological processes .

The Envelope Protein (Env) of HERV-K

The Env protein of HERV-K is a glycoprotein that facilitates the virus’s entry into host cells by mediating the fusion of the viral and cellular membranes. This protein is composed of two subunits: the surface (SU) subunit, which is responsible for receptor binding, and the transmembrane ™ subunit, which mediates membrane fusion . The Env protein is also known for its immunosuppressive properties, which can modulate the host immune response .

Recombinant HERV-K Env Protein

The recombinant HERV-K Env protein is produced using recombinant DNA technology, where the gene encoding the Env protein is cloned and expressed in a suitable host system, such as bacteria or mammalian cells. This recombinant protein can be used for various research purposes, including studying the protein’s structure and function, developing diagnostic tools, and exploring its potential as a therapeutic target .

Biological and Clinical Significance

HERV-K Env protein has been associated with several diseases, including cancer and autoimmune disorders. Reactivation of HERV-K expression has been observed in various cancers, such as melanoma, breast cancer, and ovarian cancer . The Env protein’s immunosuppressive properties may contribute to tumor immune evasion, making it a potential target for cancer immunotherapy .

In addition to its role in cancer, HERV-K Env protein has been implicated in neurological disorders, such as amyotrophic lateral sclerosis (ALS) and multiple sclerosis (MS). The protein’s expression in the central nervous system and its potential to induce neuroinflammation highlight its relevance in these diseases .

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