SKU: 12737311113

SDF-1β/CXCL12 Protein, Human

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Description

SDF-1β/CXCL12 Protein, HumanProduct Specification Species Human Synonyms Stromal cell derived factor 1; SDF 1; hSDF 1; C X C motif chemokine 12; Intercrine reduced in hepatomas (IRH hIRH); Pre B cell growth stimulating factor (PBSF); Accession P48061 Amino Acid Sequence Lys22 Met93 Expression System E. coli Molecular Weight 10 kDa (Reducing) Purity >95% by SDS PAGE. Endotoxin <0. 1EU g Conjugation Unconjugated Tag No Tag Physical Appearance Lyophilized Powder Storage Buffer PBS,

Product Specification


Species Human
Synonyms Stromal cell-derived factor 1; SDF-1; hSDF-1; C-X-C motif chemokine 12; Intercrine reduced in hepatomas (IRH hIRH); Pre-B cell growth-stimulating factor (PBSF);
Accession P48061
Amino Acid Sequence

Lys22-Met93

Expression System E.coli
Molecular Weight

10 kDa (Reducing)

Purity >95% by SDS-PAGE.
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag No Tag
Physical Appearance Lyophilized Powder
Storage Buffer PBS, pH7.0
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

Nature. 2001 Mar 1;410(6824):50-6.

Background

Stromal Cell-Derived Factor 1 beta (SDF-1β), also known as CXCL12, is a chemokine protein that plays a crucial role in immune cell trafficking, hematopoiesis, and tissue repair. SDF-1β is produced by stromal cells, endothelial cells, and fibroblasts, and acts as a chemoattractant for a variety of immune cells, including lymphocytes, monocytes, and hematopoietic stem cells. SDF-1β binds to its receptor, CXCR4, and regulates cell migration, adhesion, and survival. This chemokine is involved in various physiological and pathological processes, such as inflammation, angiogenesis, and cancer metastasis.

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SKU: 12737311113

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4.8 ★★★★★
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Prz Lineth
Massapequa, US
★★★★★ 5
Producto bueno
Size: 5 Fl Oz (Pack of 1)
Honestly, I really liked it. It has a good texture, doesn’t feel heavy, and leaves a nice finish. I’ve been using it every day, and so far it has worked well for me
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
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Hannah
Battle Creek, US
★★★★★ 5
Non greasy, not much white cast compared to other mineral sunscreens
Size: 5 Fl Oz (Pack of 1)
The only one my 13 yr old will tolerate. Its the least greasy feeling of any mineral sunscreen we've tried. At 19% zinc oxide, I'm happy. Its also the least "white" cast of any we've tried. My Fitzpatrick III daughter is happy about that
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
R
Verified Purchase
remama
Carnegie, US
★★★★★ 3
Liked the old formula more :/ very drying
Size: 5 Fl Oz (Pack of 1), Size: 5 Fl Oz (Pack of 1)
We have used this for the longest time because me and my middle child have an allergy to chemical sunscreens. I remember last summer the formula was slightly more greasy but I preferred that. While I do like how protected my skin is (we haven’t burned at all even with the new formula, even after swimming for hours and not reapplying) it is extremely drying to where my skin looks like it’s cracking and feels very hard to wash off. Like I can still feel it on my skin after showering. May try a different one :/ super bummed! I feel like it is also hard to rub on skin because it absorbs so fast.
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Reviewed in the United States on May 30, 2026
E
Verified Purchase
Eric
Grantham, US
★★★★★ 5
Great product, not the best packaging
Size: 5 Fl Oz (Pack of 1)
Glad I got this. Just returned from a two-week dive trip in the Caribbean. Lots of sun of course! I applied this product on my face and neck prior to first and 2nd dives - I never burned. I'm fair skinned but not a magnet for sun burns. I did not have a prior base that I can speak of. The product works well, and blends into your skin fairly quickly, avoiding the white out from other mineral products. Downside - the container has some type of flow restriction. This had the effect of periodically not letting product out and then spurting out all of a sudden. Not sure if a dud, but except for that I would say absolutely I'd buy again.
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Reviewed in the United States on May 25, 2025
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FXDawg
Battle Creek, US
★★★★★ 5
Very happy with
Set name: Face - 1.7 oz.
I really like this. Quickly clear after applying. No sensitivity issues. Moisturizing. It does leave a sheen which I personally like and doesn’t feel overly greasy to me.
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Reviewed in the United States on June 2, 2026

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