SKU: 71001377253

HBV Surface Antigen-preS2

Sale price$72.00 Regular price$80.00
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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17

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Description

HBV Surface Antigen-preS2Product Specification Species HBV Synonyms Middle surface antigen; PreS2 Amino Acid Sequence MQWNSTTFHQALLDPRVRGLYFPAGGSSSGTVNPVPTTASPISSIFSRTGDPAPN Expression System E. coli Molecular Weight 5. 8 kDa(Reducing) Purity 95%, by SDS PAGE under reducing conditions Endotoxin <1EU g Conjugation Unconjugated Tag His Tag Physical Appearance Lyophilized Powder Storage Buffer 20mM PB, 50mM NaCl, pH7. 4 Reconstitution Reconstitute at less than 1 mg mL according

Product Specification


Species HBV
Synonyms Middle surface antigen; PreS2
Amino Acid Sequence

MQWNSTTFHQALLDPRVRGLYFPAGGSSSGTVNPVPTTASPISSIFSRTGDPAPN

Expression System E.coli
Molecular Weight 5.8 kDa(Reducing)
Purity

>95%, by SDS-PAGE under reducing conditions

Endotoxin <1EU/μg
Conjugation Unconjugated
Tag His Tag
Physical Appearance Lyophilized Powder
Storage Buffer 20mM PB, 50mM NaCl, pH7.4
Reconstitution Reconstitute at less than 1 mg/mL according to the size in ultrapure water after rapid centrifugation .
Stability & Storage

· 12 months from date of receipt, -20 to -70 °C as supplied. 
· 6 months, -20 to -70 °C under sterile conditions after reconstitution.
· 1 week, 2 to 8 °C under sterile conditions after reconstitution.  
· Please avoid repeated freeze-thaw cycles.

Background

Hepatitis B surface antigen S2 (HBV Surface Antigen-preS2) is the smallest unit of transcriptional activator encoded by the surface gene of hepatitis B virus (HBV). It can be used as an auxiliary diagnostic reagent for hepatitis B virus infection. It exists in more than 1/3 of HBV integration units, and HBV integration units are an important factor in inducing liver cancer (HCC). HBV Surface Antigen-preS2 is also an effective regulator of apoptosis induced by tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). It is involved in promoting hepatocyte apoptosis induced by TRAIL, thereby increasing the risk of malignant transformation of human hepatocellular carcinoma cell line (HepG2).

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 71001377253

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4.8 ★★★★★
Based on 16 reviews
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A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 4
Arrived on time and as described
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
It is perfect for my 120 lb dog. He did give up after 6 hours of trying to get the “stuffing” out. The bone held up to his chewing. He loved it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2026
L
Verified Purchase
Leanne Elizabeth
Boise, US
★★★★★ 3
Be Very Cautious!
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
Splinters easily if you have an aggressive chewer! Although very tasty, within hours of a dog (lab/shepherd mix) I care for excitedly indulging in it, I was picking pieces he easily could have choked on (or worse). The large end of the bone splintered/cracked quicker than other bones he’s had which makes it very dangerous. Value for money is iffy due to that. Bone is a good price but not when it endangers the health of an animal. I gave it 3 stars because it had no smell, dog enjoyed the flavor, but definitely be cautious with this bone!
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Reviewed in the United States on February 16, 2026
R
Verified Purchase
Reviewer
West Palm Beach, US
★★★★★ 5
Dog Loves It
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
My dog, who is a intense chewer, loves these. He has learned how to break them by dropping them from up high, but they still last quite awhile. When he gets thru the filling, we fill with peanut butter for a treat.
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Reviewed in the United States on May 8, 2026
G
Verified Purchase
Gina Marcelin
Grantham, US
★★★★★ 5
Amazing
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
My dog loves these. Keeps him busy for hours.
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Reviewed in the United States on June 10, 2026
K
Verified Purchase
Kindle Customer
Houston, US
★★★★★ 5
Durable construction, including squeakers!
Style: Snake
This is the absolute best toy I've found. My dog is a 40 lb staffie who loves to play tug and chew. I'm used to toys lasting one day to one week and this one lasted about four months of almost constant daily play. The squeakers finally collapsed, so I'm buying my second one. I wish they would embroider the name of their brand on the toy because I forgot what the brand name was and it was hard to find again. Thankfully, I combed through my purchase records and finally found it. This brand definitely is my go-to for durable toys from now on!
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Reviewed in the United States on January 28, 2026

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