SKU: 35019618678

UniOne® TR-FRET Human CD40/CD40L Binding Kit

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Description

UniOne® TR-FRET Human CD40/CD40L Binding KitProduct Specification Host Human Stability & Storage Store the kit at 80C or below. When stored properly, the reagents remain stable until the expiration dateprinted on the label. Once thawed, the CD40 and CD40L stock solutions canundergo one additional freeze thaw cycle; the labeled antibody solutions canundergo one additional freeze thaw cycle. To avoid repeated freeze thaw cycles,it is recommended to aliquot the remaining stock solutions into

Product Specification


Host Human
Stability & Storage

Store the kit at -80°C or below.When stored properly, the reagents remain stable until the expiration dateprinted on the label. Once thawed, the CD40 and CD40L stock solutions canundergo one additional freeze-thaw cycle; the labeled antibody solutions canundergo one additional freeze-thaw cycle. To avoid repeated freeze-thaw cycles,it is recommended to aliquot the remaining stock solutions into single-usecontainers for storage at -80°C. Thawed dilutions and Detection Buffer can bestored at 2-8°C.


Background

This kit utilizes HomogeneousTime-Resolved Fluorescence Resonance Energy Transfer (TR-FRET) technology tomeasure the interaction between CD40 and CD40L. This method enables simple andrapid high-throughput screening of inhibitors and blocking antibodies.

As illustrated, the interactionbetween CD40 and CD40L is detected using an Eu-labeled Anti-Tag1 antibody(TR-FRET donor) and an Acceptor-labeled Anti-Tag2 antibody (TR-FRET acceptor).The binding of CD40 to CD40L brings the donor and acceptor antibodies intoproximity. Excitation of the donor antibody then triggers FRET to the acceptorantibody, resulting in a specific emission signal at 665 nm. The intensity ofthis specific signal is proportional to the degree of CD40/CD40L interaction.This homogeneous assay is simple to perform and requires no washing steps.



Components

Table 1. Kit Components and Storage Conditions

Component

Concentration

100 TESTS

500 TESTS

2500 TESTS

10000 TESTS

Storage Temp.

Tag1-CD40 protein

100×

4μL

20μL

100μL

400μL

-80°C

Tag2-CD40L protein

100×

4μL

20μL

100μL

400μL

-80°C

Selicrelumab (12.5μM)

100×

3μL

10μL

50μL

200μL

-80°C

Anti-Tag1 Eu dye antibody

50×

10μL

50μL

250μL

1mL

-80°C

Anti-Tag2 Acceptor antibody

12.5×

40μL

200μL

1mL

4mL

-80°C

Detection buffer

10×

400μL

2mL

10mL

40mL

-80°C

Shipping Notes
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Exchange/Return Notes
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SKU: 35019618678

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4.7 ★★★★★
Based on 21 reviews
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A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Whipped Tallow smooth and creamy
Size: 4.2 Fl Oz (Pack of 2)
Love it!!! A great moisturizer and it lasts a long time. It makes my skin feel great! It’s a great deal with minimal ingredients.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
E
Verified Purchase
Elizabeth O'Dell
New York, US
★★★★★ 5
Good product.
Tastes terrible, I know what you're thinking why are you tasting it we'll just putting it on you can taste it. It is very good on your lips made them very soft and hydrated.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
C
Verified Purchase
Catcentric Circles
Carnegie, US
★★★★★ 1
Update: Chemical smell?
Edit: Something seems to be different with the current version. Why does "pure tallow, beeswax, and raw honey" smell (and taste!) like cheap perfume? Ick. Good luck getting that scent out of your brain. And what the heck is it? I don't know why they changed it but it unfortunately wasn't an improvement. It's too bad. It made a great foot balm. Pretty moisturizing and the size and form factor made it easy to apply. Hope it comes back the way it was. _______ This has great/safe ingredients. It's huge. And the company seems legit so I tried it. I've given it a go and it's okay but it seems like the proportions would need to be adjusted to be more of a balm. It's good… just a little too greasy. This feels more like I just put my tallow moisturizer on my lips instead. I get that from Fancy Farm and I guess I'm going to have to stock up on theirs if I don't find something else here that has that consistency. (And no seed oils!) Lip balm needs staying power or it just becomes a nuisance.
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Reviewed in the United States on November 2, 2024
T
Verified Purchase
TheGreatWifeShark
Chelsea, US
★★★★★ 5
Finally, a non-toxic chapstick!
So I typically make my own products at home using beef tallow. But I was in dire need of chapstick, and just didn't have any time or energy to do it, so I came across this brand on Amazon and had to try. I love it! Not only is it HUGE, but it is unscented, it's glides on perfectly and my lips feel super moisturized for hours. As with all tallow products, you have to be super careful about letting this stuff sit in the heat. So if you were planning on keeping it in your purse or car, it'll definitely turn into a ooey gooey mess. I keep mine in my nightstand in an air-conditioned room, and even then it gets a bit too warm on our hot 103F Summer days. Nevertheless, I recommend to those who are looking for a non-toxic chapstick that super moisturizing.
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Reviewed in the United States on August 1, 2024
J
Verified Purchase
J. Taylor
Houston, US
★★★★★ 5
Tried the wife’s stuff, and it’s a better tool for the job.
Husband review: The wife ordered this stuff for herself, skeptical about what’s in a lot of cosmetics. I always went straight for good ol’ Carmex; but I tried it once because I was too lazy to dig around for mine. This stuff is sometimes a better tool for the job. I service swimming pools and work outside in the sun, so I sometimes struggle with dehydration & get cracked lips occasionally. I put this on before bed, and it lasts all night so I wake up better off. It’s not medicated (what she wanted), but it’s hydrating. So while I still occasionally use Carmex at work, reapplying a few times to get damaged cracks together, I use this to maintain & finish the job overnight where the other stuff would have just evaporated within an hour. Another thing: it’s soft, where chap stick would pull on a sore/crack, this stuff goes on an into damaged places like a lubricant.
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Reviewed in the United States on August 7, 2024

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