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Description
Human C1q , His tagProduct Specification Species Human Synonyms Complement C1q subcomponent subunit A Accession P02745 Amino Acid Sequence Protein sequence(P02745, Glu23 Arg150, with C 10*His) EDLCRAPDGKKGEAGRPGRRGRPGLKGEQGEPGAPGIRTGIQGLKGDQGEPGPSGNPGKVGYPGPSGPLGARGIPGIKGTKGSPGNIKDQPRPAFSAIRRNPPMGGNVVIFDTVITNQEEPYQNHSGRGGGGSHHHHHHHHHH Expression System HEK293 Molecular Weight Theoretical: 14. 7kDa Actual: 20 25kDa Purity 95% by SDS PAGE Endotoxin <1EU g Tag His Tag
Product Specification
| Species | Human |
| Synonyms | Complement C1q subcomponent subunit A |
| Accession | P02745 |
| Amino Acid Sequence | Protein sequence(P02745, Glu23-Arg150, with C-10*His) EDLCRAPDGKKGEAGRPGRRGRPGLKGEQGEPGAPGIRTGIQGLKGDQGEPGPSGNPGKVGYPGPSGPLGARGIPGIKGTKGSPGNIKDQPRPAFSAIRRNPPMGGNVVIFDTVITNQEEPYQNHSGRGGGGSHHHHHHHHHH |
| Expression System | HEK293 |
| Molecular Weight | Theoretical:14.7kDa Actual:20-25kDa |
| Purity | ＞95% by SDS-PAGE |
| Endotoxin | <1EU/μg |
| Tag | His Tag |
| 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
The complement component 1q (or simply C1q) is a protein complex involved in the complement system, which is part of the innate immune system. Antibodies of the adaptive immune system can bind antigen, forming an antigen-antibody complex. When C1q binds antigen-antibody complexes, the C1 complex becomes activated. Activation of the C1 complex initiates the classical complement pathway of the complement system. By virtue of its ability to bind to IgG and IgM containing immune complexes and activating the classical pathway, C1q acts as prototypical link between innate and adaptive immune wings of the immune system. The notion of C1q involvement in the pathogenesis of cancer is still evolving. C1q appears to have a dual role in cancer: tumor promoting as well as tumor-protective, depending on the context of the disease.
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4.7 ★★★★★
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Product Reviews
★★★★★ 5
Cute!
Color: Green
Super cute and fun to use, easy to clean, appears to be very well-made. Excellent, especially for such a low price. I will say the only complaint I have is that the spout design could use some work; the end of it doesn't come out far enough so it dribbles a bit when you try to pour. Also, and maybe this is to be expected due to the use of natural materials, but there are a couple of small split pieces/splinters on the chasen (whisk) I had to trim. Otherwise perfect!
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Amazing
Color: Green
Sooo amazing , highly recommended. Good quality and amazing price !
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Everything about this item is top notch!
Color: Pink, Color: Pink
First of all the presentation of this package is everything such a good quality. My daughter loves it. Thank you so much for taking your time to present such detail in the box. It’s beautiful.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Great product!!
Color: Emerald Kanso
This product was packaged very nice, it had a matcha handbook with very clear instructions and even a little history about matcha itself. The quality 👌!!!
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Beautiful gift for matcha fans!
Color: Pink, Color: Pink
My daughter is obsessed with matcha, so when I found this for Easter I knew it was the one. She makes her own latte every single morning, so this fit perfectly into her routine. The packaging alone is gorgeous — the colors worked beautifully with the Easter basket without me having to do much styling at all. Everything she needs to make her matcha was included in the box, nothing missing, nothing to track down separately. I was so happy I stumbled across this, and she absolutely loved it. Honestly one of those gifts that just lands exactly right.
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Reviewed in the United States on April 19, 2026