SKU: 98298508785

2B4/CD244/SLAMF4 Fc Chimera Protein, Mouse

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Description

2B4/CD244/SLAMF4 Fc Chimera Protein, MouseProduct Specification Species Mouse Synonyms SLAMF4,NKR2B4,NAIL,h2B4 Accession Q07763 1 Amino Acid Sequence Gln20 Asn22, with hIgG Fc Expression System HEK293 Molecular Weight 57 85kDa (Reducing) Purity 95% by SDS PAGE &90% by SEC HPLC Endotoxin <0. 1EU g Conjugation Unconjugated Physical Appearance Lyophilized Powder Storage Buffer PBS, PH7. 4, 5% trehalose Reconstitution Reconstitute at 0. 1 1 mg ml according to the size in ultrapure water after

Product Specification


Species Mouse
Synonyms SLAMF4,NKR2B4,NAIL,h2B4
Accession Q07763-1
Amino Acid Sequence Gln20-Asn22, with hIgG Fc
Expression System HEK293
Molecular Weight 57-85kDa (Reducing)
Purity >95% by SDS-PAGE &>90% by SEC-HPLC
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Physical Appearance Lyophilized Powder
Storage Buffer PBS, PH7.4, 5% trehalose
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.Bhat, R. et al. (2006) J. Leukoc. Biol. 79:417.
2.Veillette, A. (2006) Nat. Rev. Immunol. 6:56.
3.McNerney, M.E. et al. (2005) Mol. Immunol. 42:489.
4.Assarsson, E. et al. (2005) J. Immunol. 175:2045.

Background

2B4, also known as CD244 and SLAMF4, is a 66 kDa type I transmembrane glycoprotein in the SLAM subgroup of the CD2 protein family. SLAM family proteins have an extracellular domain (ECD) with two or four Ig-like domains and at least two cytoplasmic immunoreceptor tyrosine-based switch motifs (ITSMs). 2B4 interacts with CD48, while other SLAM family proteins interact homophilically.2B4 is expressed by all NK cells, γδ T cells, basophils, and monocytes as well as a subset of memory-phenotype CD8 αβ T cells. SLAM receptors triggered by homo- or heterotypic cell-cell interactions are modulating the activation and differentiation of a wide variety of immune cells and thus are involved in the regulation and interconnection of both innate and adaptive immune response.Activities are controlled by presence or absence of small cytoplasmic adapter proteins, SH2D1A/SAP and/or SH2D1B/EAT-2.Acts as activating natural killer (NK) cell receptor.Involved in the regulation of CD8+ T-cell proliferation; expression on activated T-cells and binding to CD488 provides costimulatory-like function for neighboring T-cells.Acts as costimulator in NK activation by enhancing signals by other NK receptors such as NCR3 and NCR1.At early stages of NK cell differentiation may function as an inhibitory receptor possibly ensuring the self-tolerance of developing NK cells.Downstreaming signaling involves predominantly VAV1, and, to a lesser degree, INPP5D/SHIP1 and CBL.Signal attenuation in the absence of SH2D1A is proposed to be dependent on INPP5D and to a lesser extent PTPN6/SHP-1 and PTPN11/SHP-2.

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SKU: 98298508785

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4.9 ★★★★★
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J
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Jen
Whiting, US
★★★★★ 5
Lasts long
Color: Panda Bear - Large
Perfect for super chewer dogs.
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Reviewed in the United States on May 14, 2026
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Michelle B.
Louisville, US
★★★★★ 4
Dachshund said “did I hear indestructible‽ Hold my ball”
Color: Grey Bear - Large
My 15lb Dachshund took this toy as a personal challenge. He heard me tell his human brother that it’s indestructible on the inside and said “hold my ball” promptly proceeding to schmurder the textile aspect of this adorable toy. I’d say it took him a total of 23 1/2 minutes to get to the center of this tootsie pop. I’m not even mad tho bc he had no interest in actually ingesting the outer part, and is totally into the inner toy, which is, for him, literally indestructible. It’s solid rubber, has a wild and fun bounce to it on multiple surfaces. Zodiac rates the squeak 10/10. It’s great especially for when I’m on a call or talking to someone in real life and can’t immediately throw said toy or pay complete attention to him. In conclusion: Your dog will probably love it, ((suggest to just keep an eye on them during the schmurder process and make sure you grab all the pieces that come off so none are swallowed)) Depending on your tolerance for squeaker pitch and frequency of squeak, it's a 4/10 in annoyance mostly bc it’s not a long drawn out squeak ((I can not tolerate those toys, they get “lost on top on my fridge” until I get up the courage to throw them out without him seeing)), it’s quick and requires a bit of effort to produce the sound however it’s a very high pitch squeak so it’s all up to your preference. I personally try to buy toys I can tolerate my dog loving on bc when he gets a new toy, it’s his favorite thing for a long time, like, it sleeps on the bed with us for the first month. Hope your fur child loves this as much as mine did. Not sure I’ll do the whole two in one toy thing again only he got through it so fast.
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Reviewed in the United States on December 25, 2025
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Clint Work
Lake Worth, US
★★★★★ 5
Love Barkbox!
Color: Comet - Small, Size: Small
I can't recommend Barkbox Super Chewer dog toys enough for those that have a pet that loves to chew. They are durable!!
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Reviewed in the United States on April 24, 2026
V
Verified Purchase
Victoria R.
Grantham, US
★★★★★ 5
This is an awesome product and affordably priced! I'll buy more in the future!
Color: Comet - Small, Size: Small
This is a great ball for my dog Polly! It doesn't stink or have any weird oils on the ball. It is definitely durable. It has a nice chirping sound and it's great exercise for my dog's jaws. It's not too bouncy and it's the perfect weight that she feels satisfied having in her mouth and when she catches it in mid-air. It's not too heavy that I have to worry about it knocking her teeth out. I almost cancelled the order after I found out the size of the ball, I thought it was a larger ball that Bark makes. It turns out it is larger than a tennis ball which is what I wanted. Someone gave us a black, knobby, ball that is 12.5 inches in diameter and she absolutely loves it, it's her favorite ball. It's the perfect size for her American Pit Bull mouth! I cannot find this product anywhere or a comparable alternative that's the same size. If you know where I can purchase another ball that I've described @ 12.5 in. diameter, please let me know! I'll likely buy this ball that was just delivered, today, in the future, if it's not discontinued! It's a great deal for only $14.99!! Thanks from a happy satisfied customer, V.B.
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Reviewed in the United States on April 23, 2024
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Char
Fort Morgan, US
★★★★★ 5
First toy he CANNOT destroy in minutes!!!
Color: Comet - Small, Size: Small, Color: Comet - Small, Size: Small
Only ball he has not destroyed in minutes!!! So good that I purchased a second one for travel. It keeps him busy and tires him out because he cannot break it!😆
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Reviewed in the United States on January 23, 2026

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