Pay in installments of $87.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Alexa Fluor 647-Labeled CD20 Flag&His Tag Full Length Protein, Human (Detergent)Product Specification Species Human Synonyms B lymphocyte surface antigen B1MS4A1B lymphocyte antigen CD20Membrane Spanning 4 Domains A1Leukocyte Surface Antigen Leu 16CD20 AntigenCD20Bp35Membrane Spanning 4 Domains Subfamily A Member 1CD20 ReceptorLEU 16CVID5MS4A2B1S7Antigens CD20Membrane Spanning 4 Domains Subfamily A Member 1B Lymphocyte Cell Surface Antigen B1 Accession P11836 Amino Acid Sequence Full length, with Flag tag at N Terminus, and His
Product Specification
| Species | Human |
| Synonyms | B-lymphocyte surface antigen B1，MS4A1，B-lymphocyte antigen CD20，Membrane Spanning 4-Domains A1，Leukocyte Surface Antigen Leu-16，CD20 Antigen，CD20，Bp35，Membrane-Spanning 4-Domains Subfamily A Member 1，CD20 Receptor，LEU-16，CVID5，MS4A2，B1，S7，Antigens， CD20，Membrane-Spanning 4-Domains， Subfamily A， Member 1，B-Lymphocyte Cell-Surface Antigen B1 |
| Accession | P11836 |
| Amino Acid Sequence | Full length, with Flag tag at N-Terminus, and His tag at C-Terminus |
| Expression System | HEK293 |
| Molecular Weight | 35.4 kDa |
| Conjugation | Alexa Fluor® 647 |
| Tag | His Tag, Flag Tag |
| Physical Appearance | Liquid |
| Storage Buffer | 25mM Hepes,150mM NaCl,0.02%DDM |
| Stability & Storage |
· 16 months from date of receipt stored at -80℃. |
| Reference | 1. Rougé L, Chiang N, Steffek M, et al. Structure of CD20 in complex with the therapeutic monoclonal antibody rituximab[J]. Science, 2020, 367(6483): 1224-1230. |
Background
CD20 is a 33-37 kDa non-glycosylated protein present on the surface of normal and malignant B lymphocytes and is a member of the MS4A (membrane-spanning 4-domain family A) protein family. The CD20 protein comprises four hydrophobic transmembrane domains, one intracellular domain, and two extracellular domains (a large loop and a small loop), with both the N- and C-termini located within the cytosol. CD20 is associated with several key molecules, including the major histocompatibility complex class II (MHCII), CD40 molecule, B-cell receptor (BCR), and the C-terminal src kinase-binding protein (CBP). CBP interacts with Src kinases such as LYN, FYN, and LCK.A deficiency in CD20 has been shown to result in a reduced number of circulating memory B cells, decreased isotype switching of immunoglobulins (Ig), and lower IgG antibody levels. It is also linked to various pathophysiological diseases and disorders.CD20 plays a crucial role in multiple physiological processes and is thus a promising therapeutic target. The CD20 protein product has the potential to enhance drug discovery efforts in related fields.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 24 reviews
Sort
Product Reviews
★★★★★ 5
Great product!
Love this product. Lightweight and feels great on the skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
★★★★★ 5
Pleasantly surprised
I’m two jars in and love it. I do use Botox, retinol, a good face wash, wash moisturize twice daily, etc etc. I struggle with moisturizer because I’m prone to breakouts. Idk what it is about this one but my skin loves it. It feels refreshed and soft. Added bonus, my eyebrows and lashes have gotten longer and darker quick! Obviously we all respond differently to products but I’ll be keeping this in my rotation
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 5
A thick and rich cream that smooths on nicely!
So I jumped on the Korean skincare bandwagon and decided to purchase some of the DR MELAXIN Products to try! I read many good reviews and decided it was worth the money. This first product is the Dr Melaxin Calcium cemenrete calcium volume cream. It comes in a 1.76 ounce glass jar. On the label there is a lot of word descriptions so I will add a few: Ex volume firming, rebornic 10,000 ppm hydrolyzed elastin and collagen extract. I have photographed label for viewing. The directions indicate to "apply a small amount of cream onto your face especially around the under-eye area". I found the cream thick and rich and I used it in addition to another Dr Melaxin neck and face product so I concentrated on only neck and under eye area. It is neutral in scent and is very thick so it feels like it is absorbing nicely. I have been using it for about a month now and have definitely noticed some improvement in the neck area so i will continue to use and layer with other products. I do recommend this line as the ingredients seem effective so far!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
★★★★★ 5
Good product for face.
Great product. Works well with decreasing lines in face after half is used and with the serum. It does leave somewhat of a sticky (not grimy) texture which is uncomfortable if using at night.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 4
Loose under eye skin tightened and brightened!
I love this cream! It makes a huge difference in the strength of the skin under my eyes and smooths the look and feel of the wrinkled skin under my eyes. It brightens my under eye circles. I gave 4 stars because if you use too much it will start to roll off almost like skin does when it sheds or when you exfoliate. I use less now and it’s perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
recommand products
GMF16918 .024 x 3/16 x 1/32 x 5/64 x 1-3/4 4G MILL 2 FLUTE 30 DEGREE HELIX BALL WITH NECK END MILL
74.99
GMF16916 .020 x 3/16 x 1/64 x 5/16 x 1-3/4 4G MILL 2 FLUTE 30 DEGREE HELIX BALL WITH NECK END MILL
85.96
GMF15024 3/8 x 3/8 x 5/8 x 2-3/8 4G MILL 2 FLUTE 30 DEGREE HELIX BALL END MILL
115.04
GMF15932 5/16 x 5/16 x 9/16 x 4 4G MILL 2 FLUTE 30 DEGREE HELIX BALL END MILL
90.89
G90840 5/8 x 5/8 x 1-1/4 x 3-1/2 R.040 5 FLUTE REGULAR LENGTH CORNER RADIUS ROUGHING X-SPEED CARBIDE END MILL
140.38