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Tumor Necrosis Factor beta Active Protein | LTA active protein

Tumor Necrosis Factor beta, Recombinant, Human (TNFb)

Gene Names
LTA; LT; TNFB; TNFSF1
Purity
Highly Purified
95% by RP-HPLC, FPLC, or reducing/non-reducing SDS-PAGE Silver Stain. Chromatographically purified.
Synonyms
Tumor Necrosis Factor beta; Recombinant; Human (TNFb); LTA active protein
Ordering
For Research Use Only!
Host
E Coli
Purity/Purification
Highly Purified
95% by RP-HPLC, FPLC, or reducing/non-reducing SDS-PAGE Silver Stain. Chromatographically purified.
Form/Format
Supplied as a lyophilized powder. No additives.
Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Met-Val-Arg-Ser-Ser.
Biological Activity
TNF-beta is fully biologically active when compared to standard. The ED50 as determined by the cytolysis of murine L929 cells in the presence of Actinomycin D is less then 0.05ng/ml, corresponding to a Specific Activity of 2 x10e6 IU/mg.
Dimers and Aggregates
1% as determined by silver-stained SDS-PAGE gel analysis.
Endotoxin Level
0.1ng/ug (IEU/ug) of TNF-beta.
Protein Content
Protein quantitation was carried out by two independent methods:
1. UV spectroscopy at 280nm using the absorbency value of 1.082 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).
2. Analysis by RP-HPLC, using a calibrated solution of TNF-beta as a Reference Standard.
Reconstitution
Reconstitute the lyophilized TNF-beta in sterile 18M-cm H2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.
Preparation and Storage
Lyophilized powder may be stored at 4 degree C for short-term only. Reconstitute to nominal volume by adding sterile dH2O and store at -20 degree C. Reconstituted product is stable for 12 months at -20 degree C. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.
Related Product Information for LTA active protein
Recombinant Human TNF-beta (Lymphotoxin) is a single, non-glycosylated, polypeptide chain containing 171 amino acids and having a molecular mass of 18645 Dalton. Recombinant Human Tumor Necrosis Factor-beta is purified by standard chromatographic techniques.
Product Categories/Family for LTA active protein

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
Molecular Weight
22,297 Da
NCBI Official Full Name
tumor necrosis factor-beta
NCBI Official Synonym Full Names
lymphotoxin alpha (TNF superfamily, member 1)
NCBI Official Symbol
LTA
NCBI Official Synonym Symbols
LT; TNFB; TNFSF1
NCBI Protein Information
lymphotoxin-alpha; LT-alpha; TNF-beta; OTTHUMP00000029184; OTTHUMP00000165897; tumor necrosis factor beta; tumor necrosis factor ligand superfamily member 1
UniProt Protein Name
Lymphotoxin-alpha
Protein Family
UniProt Gene Name
LTA
UniProt Synonym Gene Names
TNFB; TNFSF1
UniProt Entry Name
TNFB_HUMAN

NCBI Description

The encoded protein, a member of the tumor necrosis factor family, is a cytokine produced by lymphocytes. The protein is highly inducible, secreted, and forms heterotrimers with lymphotoxin-beta which anchor lymphotoxin-alpha to the cell surface. This protein also mediates a large variety of inflammatory, immunostimulatory, and antiviral responses, is involved in the formation of secondary lymphoid organs during development and plays a role in apoptosis. Genetic variations in this gene are associated with susceptibility to leprosy type 4 and psoriatic arthritis.

Uniprot Description

Function: Cytokine that in its homotrimeric form binds to TNFRSF1A/TNFR1, TNFRSF1B/TNFBR and TNFRSF14/HVEM. In its heterotrimeric form with LTB binds to TNFRSF3/LTBR. Lymphotoxin is produced by lymphocytes and cytotoxic for a wide range of tumor cells in vitro and in vivo.

Subunit structure: Homotrimer, and heterotrimer of either two LTB and one LTA subunits or (less prevalent) two LTA and one LTB subunits.

Subcellular location: Secreted. Membrane. Note: The homotrimer is secreted. The heterotrimer is membrane-associated.

Polymorphism: A polymorphism in LTA accounts, in part, for susceptibility to leprosy linked to chromosome 6p21.3 (LPRS4) [

MIM:610988].

Involvement in disease: Genetic variations in LTA are a cause of susceptibility psoriatic arthritis (PSORAS) [

MIM:607507]. PSORAS is an inflammatory, seronegative arthritis associated with psoriasis. It is a heterogeneous disorder ranging from a mild, non-destructive disease to a severe, progressive, erosive arthropathy. Five types of psoriatic arthritis have been defined: asymmetrical oligoarthritis characterized by primary involvement of the small joints of the fingers or toes; asymmetrical arthritis which involves the joints of the extremities; symmetrical polyarthritis characterized by a rheumatoidlike pattern that can involve hands, wrists, ankles, and feet; arthritis mutilans, which is a rare but deforming and destructive condition; arthritis of the sacroiliac joints and spine (psoriatic spondylitis).

Sequence similarities: Belongs to the tumor necrosis factor family.

Research Articles on LTA

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Product Notes

The LTA lta (Catalog #AAA650649) is an Active Protein produced from E Coli and is intended for research purposes only. The product is available for immediate purchase. The amino acid sequence is listed below: The sequence of the first five N-terminal amino acids was determined and was found to be Met-Val-Ar g-Ser-Ser. It is sometimes possible for the material contained within the vial of "Tumor Necrosis Factor beta, Active Protein" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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