This product is not expected to present any major stability, solubility, aggregation, or conformational issues when reconstituted from pH 8.0 to approximately pH 7.4. This material is lyophilized from 0.02 M Tris, 0.13 M glycine, 0.08 M trehalose at pH 8.0 and is soluble to 10 mg/mL. Denaturation is noted only under acidic conditions below pH 4, not at near-physiological pH. This aligns with α2-macroglobulin being a native plasma protein and literature describing purified human α2M in near-physiological buffers around pH 7.2–7.4 while retaining native/functional properties. The main consideration is careful handling after reconstitution, as purified α2-macroglobulin can become heterogeneous or lose activity during freezing, lyophilization, prolonged storage, or repeated freeze–thaw cycles. Please see the link below to review additional information available in the product datasheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/182/570/m6159dat.pdf
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| Ihnen/SKU | Verfügbarkeit | Preis |
|---|---|---|
1 mg | Ab HEUTE lieferbarvonSchnelldorf | € 275,00 |
5 mg | Ab HEUTE lieferbarvonSchnelldorf | € 945,00 |
10 mg | Voraussichtliches Versanddatum28. August 2026vonSchnelldorf | € 2.700,00 |
Über diesen Artikel
biological source
human plasma
Quality Segment
product line
BioUltra
assay
≥98% (SDS-PAGE)
form
lyophilized powder
mol wt
~720 kDa (four glycoprotein subunits)
composition
Protein, 15-30% biuret
technique(s)
inhibition assay: suitable
solubility
water: soluble 10 mg protein/mL, clear, colorless
UniProt accession no.
storage temp.
−20°C
Gene Information
human ... A2M(2)
Application
Biochem/physiol Actions
Packaging
Physical form
Analysis Note
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description BioUltra, ≥98% (SDS-PAGE) | description ≥95% (SDS-PAGE) | description A multifunctional, secreted glycoprotein that acts as a broad range irreversible protease inhibitor that forms a "trap" around most proteases. | description salt-free, lyophilized powder |
| biological source human plasma | biological source human | biological source - | biological source human plasma |
| assay ≥98% (SDS-PAGE) | assay ≥95% (SDS-PAGE) | assay ≥95% (SDS-PAGE) | assay ≥70% protein basis (biuret) |
| Gene Information human ... A2M(2) | Gene Information human ... A2M(2) | Gene Information - | Gene Information human ... ELA2(1991), SERPINA1(5265) |
| Quality Level 200 | Quality Level - | Quality Level 100 | Quality Level 200 |
| form lyophilized powder | form lyophilized | form lyophilized | form salt-free, lyophilized powder |
| solubility water: soluble 10 mg protein/mL, clear, colorless | solubility - | solubility aqueous buffer: soluble | solubility - |
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Lagerklasse
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Hi, For downstream biophysical characterization to conditions closer to physiological plasma/serum environment, do you anticipate any stability/solubility/aggregation, or conformational issues if α2-macroglobulin is reconstituted from pH 8.0 to ~pH 7.4?
1 answer-
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