SKU: 31107230743

TNF-α Protein, Human

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Description

TNF-α Protein, HumanProduct Specification Species Human Synonyms TNF , Cachectin, Tumor Necrosis Factor Alpha, TNFSF1A Accession P01375 Amino Acid Sequence Val77 Leu233, with N terminal 8*His MHHHHHHHHVRSSSRTPSDKPVAHVVANPQAEGQLQWLNRRANALLANGVELRDNQLVVPSEGLYLIYSQVLFKGQGCPSTHVLLTHTISRIAVSYQTKVNLLSAIKSPCQRETPEGAEAKPWYEPIYLGGVFQLEKGDRLSAEINRPDYLDFAESGQVYFGIIAL Expression System E. coli Molecular Weight 18. 5kDa Purity >95% by SDS PAGE Endotoxin <1EU g Conjugation

Product Specification


Species Human
Synonyms TNF-α, Cachectin, Tumor Necrosis Factor-Alpha, TNFSF1A
Accession P01375
Amino Acid Sequence

Val77-Leu233, with N-terminal 8*His MHHHHHHHHVRSSSRTPSDKPVAHVVANPQAEGQLQWLNRRANALLANGVELRDNQLVVPSEGLYLIYSQVLFKGQGCPSTHVLLTHTISRIAVSYQTKVNLLSAIKSPCQRETPEGAEAKPWYEPIYLGGVFQLEKGDRLSAEINRPDYLDFAESGQVYFGIIAL

Expression System E.coli
Molecular Weight

18.5kDa

Purity >95% by SDS-PAGE
Endotoxin <1EU/μg
Conjugation Unconjugated
Tag His Tag
Physical Appearance Lyophilized Powder
Storage Buffer

20mM Tris, 150mM NaCl, 2mM TCEP, pH8.5

Reconstitution

Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.

Stability & Storage

· 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.

· 3 months, -20 to -80℃ under sterile conditions after reconstitution.

· 1 week, 2 to 8℃ under sterile conditions after reconstitution.

· Please avoid repeated freeze-thaw cycles.

Reference

1、Hector J. et al. (2007) TNF-alpha alters visfatin and adiponectin levels in human fat. Horm Metab Res. 39(4): 250-255.

2、Berthold-Losleben M. et al. (2008) The TNF-alpha System: Functional Aspects in Depression, Narcolepsy and Psychopharmacology. Curr Neuropharmacol. 6(3): 193-202.

Background

Tumor necrosis factor α (TNF alpha) is an effective pro-inflammatory cytokine, which can kill and inhibit tumor cells. It is mainly produced by activated macrophages and can also be secreted by other types of cells, such as CD4+ lymphocytes, NK cells, neutrophils, mast cells, eosinophils and neuronal tissues. The members of TNF alpha family exert their cellular effect through two distinct surface receptors of the TNF receptor family, TNFR1 and TNFR2. The pleiotropic biological effects of TNF can be attributed to its ability to simultaneously activate multiple signaling pathways in cells. TNF-induced NF-κB activation promotes the growth, invasion and metastasis of cancer cells.

Shipping Notes
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Exchange/Return Notes
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SKU: 31107230743

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4.3 ★★★★★
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J
Verified Purchase
Justin Jolley
Draper, US
★★★★★ 5
Versatile, comfortable and a delight to wear
Size: 10.5 Wide, Color: Army Green
Had never heard of this brand but needed a pair of waterproof boots for a trip to the PNW where we would hike in mountains, rainforest and beaches. I have a pair of Merrell Moab hiking shoes, but wanted something that covered more and were waterproof. These boots are amazing. They are one of the most comfortable shoes I own. I wore them everywhere and found I preferred them over other shoes throughout the trip. They stayed comfortable and dry no matter where we went, rivers, lakes or the ocean. I’ve now worn them on several trips including a March trip to Bryce Canyon where we went from snow on some trails to the heat of the red rocks in others. I love these boots more every time I wear them. I am a huge fan now. At the price they are a nobrainer. I would buy these Nortiv8 boots over and over again.
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Reviewed in the United States on March 24, 2026
K
Verified Purchase
kaniksu
San Leandro, US
★★★★★ 4
Good value for a $55 boot.
Size: 12, Color: Army Green
I like these boots because I have a wide foot and even though I bought the 12 and NOT the 12W there is plenty of width. Very comfortable boot. I have put this pair through about 1000 miles mostly on asphalt, ice and snow. Very little actual dirt/ rocky trails. I bought them for the waterproofness and ankle support. Now the soles are getting thin and I can feel small rocks through the soles. Plus the soles are beginning to separate from the uppers and they are no longer waterproof. Not bad for 1000 miles. Still, I feel For a $55 boot they are a good value. I am 6ft and weigh 250.
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Reviewed in the United States on May 28, 2026
J
Verified Purchase
Jorgeh
Los Angeles, US
★★★★★ 5
Very comfortable
Size: 11, Color: Army Green
Great boots , comfort, fits great!!
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Reviewed in the United States on May 25, 2026
R
Verified Purchase
Renny
Boise, US
★★★★★ 5
Worth Every Penny!
Size: 9, Color: Coyote
I absolutely love these boots! They are super light, comfortable and definitely waterproof. I took them on a camping trip for the weekend and I walked through creeks and puddles with no issues at all. No water got inside and they were comfortable all weekend. The only thing was the tongue did start to bother me a bit after the 3rd day. I have some pretty boney shins but a small cloth between my shins and the tongue helped a lot.
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Reviewed in the United States on April 27, 2026
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Verified Purchase
Mike
San Leandro, US
★★★★★ 5
Good
Size: 12 Wide, Color: Black
Easy to walk in good quality, lightweight lace quality is good very comfortable and no resist.
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Reviewed in the United States on May 3, 2026

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