SKU: 74369991095

CD4/LEU3 Fc Chimera Protein, Human

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Description

CD4/LEU3 Fc Chimera Protein, HumanProduct Specification Species Human Synonyms CD4, LEU3, T4, IMD79, OKT4D Accession P01730 Amino Acid Sequence Lys26 Trp390, with C terminal Human IgG1 Fc

Product Specification


Species Human
Synonyms CD4, LEU3, T4, IMD79, OKT4D
Accession P01730
Amino Acid Sequence

Lys26-Trp390, with C-terminal Human IgG1 Fc KKVVLGKKGDTVELTCTASQKKSIQFHWKNSNQIKILGNQGSFLTKGPSKLNDRADSRRSLWDQGNFPLIIKNLKIEDSDTYICEVEDQKEEVQLLVFGLTANSDTHLLQGQSLTLTLESPPGSSPSVQCRSPRGKNIQGGKTLSVSQLELQDSGTWTCTVLQNQKKVEFKIDIVVLAFQKASSIVYKKEGEQVEFSFPLAFTVEKLTGSGELWWQAERASSSKSWITFDLKNKEVSVKRVTQDPKLQMGKKLPLHLTLPQALPQYAGSGNLTLALEAKTGKLHQEVNLVVMRATQLQKNLTCEVWGPTSPKLMLSLKLENKEAKVSKREKAVWVLNPEAGMWQCLLSDSGQVLLESNIKVLPTWIEGRMDPKSSDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK

Expression System HEK293
Molecular Weight

78-84kDa

Purity >95% by SDS-PAGE
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag Human 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、Owen G R. et al. (2016) Human CD4 Metastability Is a Function of the Allosteric Disulfide Bond in Domain 2. Biochemistry. 55(15): 2227-2237.

Background

The cluster of differentiation 4 receptor (CD4) is a 55kDa type I integral membrane glycoprotein which plays a substantial role during adaptive immune responses. In T-cells, CD4 mediates maturation, stabilizes T-cell receptor interactions with peptide-major histocompatibility complex class II (MHCII) complexes on antigen presenting cells, and mediates intracellular T-cell signalling.2 In addition to T-cells, CD4 has also been shown to be expressed on monocytes, monocyte-derived macrophages, Langerhans cells, B lymphocytes, dendritic cells, eosinophils, megakaryocytes and mast cells. The role of CD4 during immune function can also be diverted by the human immunodeficiency virus type 1 (HIV-1) envelope glycoprotein gp120 as the viral receptor utilizes CD4 as the primary receptor as well as the co-receptor CCR5/CXCR4 during the entry process.

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SKU: 74369991095

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4.6 ★★★★★
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K
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Kirsty Ansell
New York, US
★★★★★ 2
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Not for aggressive chewers. It looked good but after a couple of hours the binding around the edge started coming undone and my terror twins have destroyed it
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Reviewed in the United States on June 5, 2026
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Lisa Basile
Phoenix, US
★★★★★ 5
Aggressive Chewer Approved!
I’ve tried so many dog toys that claim to be “tough,” and most of them don’t last more than a day in my house… but this one is the real deal.
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Reviewed in the United States on January 19, 2026
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Malieo
San Leandro, US
★★★★★ 4
Favorite toy but my dog chews too aggressively .
I took away 1 star because my dog tore a hole into this toy the 1st day, but even though that happened I am still happy with this toy. It was a great price and my dog LOVES this toy. He throws it all around and shakes it, "Octy" keeps him entertained for a good 45 mins , so I am still happy with the purchase .
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Reviewed in the United States on February 9, 2026
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Roll4Life
Fort Morgan, US
★★★★★ 1
Dangerous for dogs!
Not only is this not a tough toy since my puppy tore it apart in less than 2 months, she also swallowed the long red strings and filling. I had to pull it out of her back end. Any dog owner knows this is not safe, especially for my 5-month-old puppy. This is in no way a tough toy, and can be very dangerous for dogs.
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Reviewed in the United States on March 9, 2026
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Krystle Boyd
Phoenix, US
★★★★★ 5
Durable, puppy loves it
Durable for husky puppy to chew on, has a squeaker inside, getting the job done so o really im happy with purchase! Also not stuffed so that's nice, just basically a strong fabric, flat with squeaker on inside. Simple but great toy!
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Reviewed in the United States on February 12, 2026

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