SKU: 53882774195

Mouse CD28, His tag

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Description

Mouse CD28, His tagProduct Specification Species Mouse Synonyms T cell specific surface glycoprotein CD28 Accession P31041 Amino Acid Sequence Protein sequence (P31041, Asn20 Leu150, with C 10*His) NKILVKQSPLLVVDSNEVSLSCRYSYNLLAKEFRASLYKGVNSDVEVCVGNGNFTYQPQFRSNAEFNCDGDFDNETVTFRLWNLHVNHTDIYFCKIEFMYPPPYLDNERSNGTIIHIKEKHLCHTQSSPKLGGGGSHHHHHHHHHH Expression System HEK293 Molecular Weight Predicted MW: 16. 9 kDa Observed MW: 35 kDa Purity 95% by SDS PAGE Endotoxin <1EU g Tag

Product Specification


Species Mouse
Synonyms T-cell-specific surface glycoprotein CD28
Accession P31041
Amino Acid Sequence

Protein sequence (P31041, Asn20-Leu150, with C-10*His) NKILVKQSPLLVVDSNEVSLSCRYSYNLLAKEFRASLYKGVNSDVEVCVGNGNFTYQPQFRSNAEFNCDGDFDNETVTFRLWNLHVNHTDIYFCKIEFMYPPPYLDNERSNGTIIHIKEKHLCHTQSSPKLGGGGSHHHHHHHHHH

Expression System HEK293
Molecular Weight Predicted MW: 16.9 kDa Observed MW: 35 kDa
Purity >95% by SDS-PAGE
Endotoxin <1EU/μg
Tag with C-10*His
Physical Appearance Lyophilized Powder
Storage Buffer Lyophilized from a 0.2 μm filtered solution of 0.2M PBS, pH7.4.
Reconstitution Reconstitute no more than 1 mg/mL according to the size in deionized 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

CD28 (Cluster of Differentiation 28) is one of the proteins expressed on T cells that provide co-stimulatory signals required for T cell activation and survival. T cell stimulation through CD28 in addition to the T-cell receptor (TCR) can provide a potent signal for the production of various interleukins (IL-6 in particular). CD28 is the receptor for CD80 (B7.1) and CD86 (B7.2) proteins. CD28 is the only B7 receptor constitutively expressed on naive T cells. Association of the TCR of a naive T cell with MHC:antigen complex without CD28:B7 interaction results in a T cell that is anergic. CD28 was identified on bone marrow stromal cells, plasma cells, neutrophils and eosinophils. In addition, the level of positive CD28 decreases with age.

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SKU: 53882774195

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4.0 ★★★★★
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Ashley Cochran
Phoenix, US
★★★★★ 5
Great quality product
Size: iPad A16 11th/10th
This is a great quality product that is easy to apply. It's scratch proof with no glare on the screen. We were able to apply this screen protector with no bubbles on the screen. It's heavy duty and will prevent screen cracking if this is dropped. I would definately recommend this product!
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Reviewed in the United States on May 11, 2026
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Nandu
Lowell, US
★★★★★ 5
Screen protector
Size: iPad Air 11" M4/ M3/M2, Size: iPad Air 11" M4/ M3/M2
I’m really happy with this screen protector for my iPad. The quality feels really good, and it fits perfectly on the screen without affecting the display quality or touch sensitivity. I was worried it might make the screen look dull or reduce responsiveness with the Apple Pencil, but everything still works super smoothly. It also helps reduce fingerprints and keeps my screen protected from scratches, which gives me peace of mind while carrying it around daily.
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Reviewed in the United States on May 13, 2026
A
Verified Purchase
Artem
Pawtucket, US
★★★★★ 4
Good protection, but some bubbles remain
Size: iPad pro 13'' 7th (2024), Size: iPad pro 13'' 7th (2024)
This screen protector does a great job protecting my iPad. It feels solid and the screen still looks clear and responsive after installation. Overall, it gives good peace of mind for daily use. Installation was simple and straightforward, which I really liked. It didn’t take much time and everything you need is included. The only downside is that there is always a small air bubble that stays under the screen at a certain angle and doesn’t fully go away. It’s not a big issue, but worth mentioning. I’ll attach photos after installation so you can see how it looks. Overall, a good product with minor imperfections.
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Reviewed in the United States on March 24, 2026
K
Verified Purchase
Kevin
Bozeman, US
★★★★★ 5
Works like it’s supposed to
Size: iPad pro 13'' 7th (2024)
Fits perfect for my iPad 13 inch. It’s a glossy finish and doesn’t affect touch. It’s was easy to install . It’s a pretty good screen protector would recommend.
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Reviewed in the United States on May 12, 2026
J
Verified Purchase
Joe Flores
Port Orchard, US
★★★★★ 5
Quality and price
Size: iPad Air 11" M4/ M3/M2
Really good material. Easy installation, would buy again.
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Reviewed in the United States on May 22, 2026

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