SKU: 16259178916

Recombinant HBV Surface Antigen-preS1

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Description

Recombinant HBV Surface Antigen-preS1Product Specification Species HBV Accession P31869 Amino Acid Sequence Met1 Ala119 MGGWSSKPRQGMGTNLSVPNPLGFFPDHQLDPAFGANSNNPDWDFNPNKDHWPEAHQVGAGAFGPGFTPPHGGLLGWSPQAQGILTTVPVAPPPASTNRQSGRQPTPISPPLRDSHPQA Expression System E. coli Molecular Weight 14 kDa(Reducing) Purity 95% by SDS PAGE Endotoxin <2EU g Conjugation Unconjugated Physical Appearance Lyophilized Powder Reconstitution Reconstitute at 0. 1 1 mg ml according to the size in ultrapure water

Product Specification


Species HBV
Accession P31869
Amino Acid Sequence Met1-Ala119 MGGWSSKPRQGMGTNLSVPNPLGFFPDHQLDPAFGANSNNPDWDFNPNKDHWPEAHQVGAGAFGPGFTPPHGGLLGWSPQAQGILTTVPVAPPPASTNRQSGRQPTPISPPLRDSHPQA
Expression System E.coli
Molecular Weight 14 kDa(Reducing)
Purity

>95% by SDS-PAGE

Endotoxin <2EU/μg
Conjugation Unconjugated
Physical Appearance Lyophilized Powder
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, -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 virus (HBV) is a human pathogen, causing serious liver disease. The HBV surface protein antigens (HBsAg) are comprised of three carboxyl co terminal HBs proteins termed large (LHBs), middle (MHBs) and small (SHBs, also called major) protein. LHBs and MHBs also share the highly hydrophobic, repetitive, membrane spanning S domain. In addition, LHBs has a 119 amino acid region called preS1. The E.Coli derived Recombinant Hepatitis B Surface Antigen preS1 is a single non-glycosylated polypeptide chain.

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Exchange/Return Notes
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SKU: 16259178916

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4.5 ★★★★★
Based on 15 reviews
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Verified Purchase
C. Rocco
Phoenix, US
★★★★★ 5
Keeps my puppy happy!!
Color: Orange - 3.15Inch
My 8 month old puppy loves this ball!! He is so happy when we charge it up for him!! It's great because it keeps him busy for a few minutes and it tires him out. This is our second one so we always have one ready to go for him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
D
Verified Purchase
Dayami Morales
Chelsea, US
★★★★★ 5
Fun Dog Toy
Color: Orange - 3.15Inch, Color: Orange - 3.15Inch
My Goldendoodle loves this ball! It’s the perfect size, easy to carry, and keeps her busy for a long time. Great purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
E
emma
Lexington, US
★★★★★ 5
Orange Ball Endless Dog Zoomies
Color: ‌Tangerine - 3.15Inch
My dog was immediately curious about this ball, and it quickly turned into one of the toys that gets pulled out multiple times throughout the day. The movement keeps things interesting and encourages chasing in a way that a regular ball doesn’t. I like that it keeps my dog occupied when the weather isn’t great for long outdoor play sessions. The textured surface provides a decent grip when carrying it around the house. It has bounced off furniture and walls a few times and still looks surprisingly good afterward. The size worked well for my medium-sized dog and was easy for him to grab. There were a couple moments where it got stuck in tight spaces, but that’s more a result of enthusiastic play than a problem with the toy itself. The activity level definitely increased when this ball started moving around. It’s been a fun way to add a little extra excitement to indoor playtime.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
A
Amazon Customer
Cuba, US
★★★★★ 5
Easy to charge and bounces nicely on the grass
Color: ‌Tangerine - 3.15Inch
Getting the kids' backpacks ready usually means the dog gets ignored for a bit and starts pacing. I turn this ball on and toss it out the back door. It has a surprising amount of bounce on the grass, and the random movements keep him running circles trying to catch it. Pushing the button to switch the rolling modes is straightforward. The battery gets me through a few play sessions before it needs to be plugged back in. The outer shell gets pretty dirty outside, but wiping it down with a damp rag cleans it right up. It’s got a decent weight to it, so it doesn't just get stuck under the lawn chairs immediately.
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Reviewed in the United States on June 12, 2026
S
Verified Purchase
Sean B
Phoenix, US
★★★★★ 1
Beware of poor quality issues!
Color: Orange - 3.15Inch, Color: Orange - 3.15Inch
Got limited use out of ball, seemed to have quite a strong motor and was going to be a good buy. But upon going to recharge it for the first time, discovered the USB port was completely loose/not attached. Will steer clear of this brand going forward.
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Reviewed in the United States on May 26, 2026

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