SKU: 45577242723

Biotinylated CD52 Fc&Avi Tag Protein, Human

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Description

Biotinylated CD52 Fc&Avi Tag Protein, HumanProduct Specification Species Human Synonyms Epididymis Secretory Sperm Binding Protein Li 171mP, CD52 Antigen (CAMPATH 1 Antigen), Epididymal Secretory Protein E5, He5, CDW52 Antigen, HEL S 171mP, EDDM5, CDw52, Cambridge pathology 1 antigen, Human epididymis specific protein 5, CD52 Molecule Accession P31358 Amino Acid Sequence Gly25 Ser36, with C terminal human IgG1 Fc &Avi tag

Product Specification


Species Human
Synonyms Epididymis Secretory Sperm Binding Protein Li 171mP, CD52 Antigen (CAMPATH-1 Antigen), Epididymal Secretory Protein E5, He5, CDW52 Antigen, HEL-S-171mP, EDDM5, CDw52, Cambridge pathology 1 antigen, Human epididymis-specific protein 5, CD52 Molecule
Accession P31358
Amino Acid Sequence

Gly25-Ser36, with C-terminal human IgG1 Fc &Avi tag GQNDTSQTSSPSIEGRMDPKSSDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGKGLNDIFEAQKIEWHE

Expression System HEK293
Molecular Weight

35-43kDa

Purity >95% by SDS-PAGE
Endotoxin <0.1EU/μg
Conjugation Biotin
Tag Avi Tag, Mouse Fc Tag
Physical Appearance Lyophilized Powder
Storage Buffer PBS, pH7.4
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. Koyama K. et al. (2009) Functional aspects of CD52 in reproduction. J Reprod Immunol. 83(1-2): 56-59. 2. Morris, P.J. and N.K. Russell (2006) Transplantation 81:1361. 3. Redpath, S. et al. (1998) Immunology 93:595. 4. Hardiyanto, L. et al. (2012) J. Reprod. Immunol. 94:142.

Background

CD52, also known as CAMPATH-1 antigen, HE5, and gp20, is a cell surface glycoprotein that can be targeted to induce immune suppression by complement-mediated cell lysis. CD52 is a GPI-anchored protein present in lymphocytes and male reproductive tissues (mrt) including mature sperm and seminal plasma. It has been shown that mrt-CD52 is synthesized in epithelial cells of the epididymis and vas deferens, but not in the testis. The mrt-CD52 is transported to mature sperm during sperm transition in the male reproductive tract. Lymphocyte CD52 functions to stimulate suppressor T cell induction, while mrt-CD52 is associated with seminogelin and involved in clot formation and liquefaction of semen. It protects sperm against anti-sperm antibodies by binding to C1q and inhibiting complement activation.

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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SKU: 45577242723

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4.4 ★★★★★
Based on 24 reviews
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CL
Pawtucket, US
★★★★★ 4
⭐️⭐️⭐️⭐️ Finally Found a Long-Lasting Bone That Actually Keeps My Dog Busy
Flavor Name: Variety Packs, Size: 3 Pack, Set name: Large
I’ve tried a lot of filled bones and chew treats over the years, and most fall into two categories: gone in 5 minutes, or upset stomach later. These filled beef shank bones hit the sweet spot. The bone itself is thick, dense, and real, not a thin, brittle shell. My medium-large dog is an aggressive chewer, and this keeps him occupied for a solid 30–45 minutes working on the filling, then even longer gnawing on the bone afterward. The filling smells fresh and appetizing (not rancid or overly greasy), and my dog goes crazy for it. We’ve tried the cheese-style and peanut butter–style fillings, and both were a big hit. No crumbly mess, no weird residue, and no digestive issues so far. What I really appreciate is that these feel safer than many cheaper alternatives. The edges don’t splinter, and the bone wears down gradually instead of cracking. Why I’ll keep buying these: • Long-lasting even for power chewers • Real beef shank bone, not pressed junk • Filling dogs actually care about • Helps with boredom and anxiety • Good value compared to pet store brands Minor cons: • Can get a little smelly after heavy chewing • I supervise and take it away when it gets small (as with any bone) If you’re tired of wasting money on chews that disappear in minutes, these are a fantastic upgrade. My dog is obsessed, and I finally feel good about what I’m giving him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
A
Verified Purchase
Ashleyyyy
Boise, US
★★★★★ 5
Best bones out there
Flavor Name: Variety Packs, Size: 3 Pack, Set name: Large
These are the best bones I’ve ever bought. I have a lab puppy and as you can imagine most bones don’t last long around here, but this one keeps him entertained for days.
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Reviewed in the United States on June 4, 2026
R
Verified Purchase
RebaJane
Grantham, US
★★★★★ 5
Happy doggy dancing my ensue
Flavor Name: Variety Packs, Size: 1.26 Pound (Pack of 1), Set name: Small
I haven’t tried them, but the dogs seem to like them. They do that tippy tappy happy dance when these come out.
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Reviewed in the United States on April 26, 2026
A
Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 3
Sturdy
Flavor Name: Variety Packs, Size: 3 Pack, Set name: Large, Flavor Name: Variety Packs, Size: 3 Pack, Set name: Large
Ok so I'm very happy that my standard poodle seemed to really enjoy this product. She was lacking and biting it for hours and days. That said she has still yet to make a dent in the bone. It seems to be too hard and too thick for her. I was surprised how heavy it was! It is large enough it is completely safe to leave her in the other room with. No strange odor or transfer of color. I'd say for the cost it isn't worth it as she is only getting filling and not able to eat the bone for some reason. Then again she is entertained for hours..so maybe so. Doesn't seem to bother her sensitive tummies either.
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Reviewed in the United States on May 7, 2026
M
Verified Purchase
Makayla McDaniel
Carnegie, US
★★★★★ 5
Yuummmy but priceyyyy
Flavor Name: Variety Packs, Size: 1.26 Pound (Pack of 1), Set name: Small
I personally didn't eat them but I gave my dog one. After one my dog found out where I stashed them, ripped the package open and grabbed the rest from the bag. He then hid them around the house and individually opened them and ate them. I know this because I kept finding plastic wrap everywhere and then empty bones. So I'm going to guess they were delicious. Also a bonus to have extra bones for them to chew on and you to step on! I will say, I didnt like how they were all individually plastic wrapped, made it difficult for me to open them.
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Reviewed in the United States on June 5, 2026

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