Human Serpin A1/ alpha 1-Antitrypsin Antibody

Catalog # Availability Size / Price Qty
Detection of Human Serpin A1/ alpha 1‑Antitrypsin by Western Blot.
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Product Details
Citations (4)
Supplemental Products

Human Serpin A1/ alpha 1-Antitrypsin Antibody Summary

Species Reactivity
Detects human Serpin A1/ alpha 1‑Antitrypsin in direct ELISAs and Western blots. In Western blots, no cross‑reactivity with recombinant human Serpin A3, A4, A5, C1, F1, recombinant mouse Serpin D1, or F2 is observed.
Monoclonal Mouse IgG2A Clone # 202808
Protein A or G purified from hybridoma culture supernatant
Mouse myeloma cell line NS0-derived recombinant human Serpin A1/ alpha 1‑Antitrypsin
Accession # P01009
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

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Recommended Concentration
Western Blot
1 µg/mL
See below
Simple Western
10 µg/mL
See below
25 µg/mL
Conditioned cell culture medium spiked with Recombinant Human Serpin A1/ alpha 1-Antitrypsin (Catalog # 1268-PI), see our available Western blot detection antibodies
8-25 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Human Serpin A1/a1‑Antitrypsin antibody by Western Blot. View Larger

Detection of Human Serpin A1/ alpha 1‑Antitrypsin by Western Blot. Western blot shows human plasma and lysates of human lung tissue and human kidney tissue. PVDF membrane was probed with 1 µg/mL of Mouse Anti-Human Serpin A1/a1-Antitrypsin Monoclonal Antibody (Catalog # MAB1268) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). Specific bands were detected for Serpin A1/a1-Antitrypsin at approximately 50-60 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Immunocytochemistry Serpin A1/a1-Antitrypsin antibody in HepG2 Human Cell Line by Immunocytochemistry (ICC). View Larger

Serpin A1/ alpha 1‑Antitrypsin in HepG2 Human Cell Line. Serpin A1/a1-Antitrypsin was detected in immersion fixed HepG2 human hepatocellular carcinoma cell line using Mouse Anti-Human Serpin A1/ a1-Antitrypsin Monoclonal Antibody (Catalog # MAB1268) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counter-stained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

Simple Western Detection of Human Serpin A1/a1-Antitrypsin antibody by Simple Western<sup>TM</sup>. View Larger

Detection of Human Serpin A1/ alpha 1‑Antitrypsin by Simple WesternTM. Simple Western lane view shows lysates of human plasma, loaded at 0.2 mg/mL. A specific band was detected for Serpin A1/ alpha 1‑Antitrypsin at approximately 65 kDa (as indicated) using 10 µg/mL of Mouse Anti-Human Serpin A1/ alpha 1‑Antitrypsin Monoclonal Antibody (Catalog # MAB1268). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Serpin A1/alpha 1-Antitrypsin

Serpin A1 is the archetypal member of the Serpin superfamily of the serine protease inhibitors (1). As one of the most abundant proteinase inhibitors in the circulation, it is synthesized in the liver and secreted into the bloodstream with the major function to protect tissues against neutrophil elastase. A severe Serpin A1 deficiency leads to several clinical complications such as pulmonary emphysema, juvenile hepatitis, cirrhosis, and hepatocellular carcinoma (2). The deficiency is caused by point mutations in naturally occurring Serpin A1 variants (over 70 are known). For example, the Z variant (Glu342 to Lys) forms intracellular inclusion bodies, is not secreted, and leads to a severe Serpin A1 deficiency (3).

  1. Silverman, G.A. et al. (2001) J. Biol. Chem. 276:33293.
  2. Barbour, K.W. et al. (2002) Genomics 80:515.
  3. Lomas, D.A. et al. (2002) Biochem. Soc. Trans. 30:89.
Entrez Gene IDs
5265 (Human)
Alternate Names
A1A; A1AT; AATMGC23330; alpha 1-Antitrypsin; alpha 1-Proteinase Inhibitor; Alpha-1 protease inhibitor; Alpha-1-antiproteinase; alpha-1-antitrypsin; antitrypsin), member 1; member 1; PIMGC9222; serine (or cysteine) proteinase inhibitor, clade A (alpha-1 antiproteinase; serine (or cysteine) proteinase inhibitor, clade A, member 1; Serpin A1; serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin)

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Citations for Human Serpin A1/ alpha 1-Antitrypsin Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

4 Citations: Showing 1 - 4
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  1. Protease-anti-protease compartmentalization in SARS-CoV-2 ARDS: Therapeutic implications
    Authors: OF McElvaney, T Asakura, SL Meinig, JL Torres-Cas, RS Hagan, C Gabillard, MP Murphy, LB Thorne, A Borczuk, EP Reeves, RE Zumwalt, Y Mikami, TP Carroll, K Okuda, G Hogan, OJ McElvaney, J Clarke, NL McEvoy, PW Mallon, C McCarthy, G Curley, MC Wolfgang, RC Boucher, NG McElvaney
    EBioMedicine, 2022;77(0):103894.
    Species: Human
    Sample Types: Plasma
    Applications: Immunoprecipitation
  2. Fecal host biomarkers predicting severity of Clostridioides difficile infection
    Authors: M Golizeh, K Winter, L Roussel, M Landekic, M Langelier, VG Loo, M Ndao, DC Vinh
    JCI Insight, 2020;0(0):.
    Species: Mouse
    Sample Types: Protein
    Applications: Western Blot
  3. Modified serpinA1 as risk marker for Parkinson's disease dementia: Analysis of baseline data
    Sci Rep, 2016;6(0):26145.
    Species: Human
    Sample Types: CSF
    Applications: Western Blot
  4. Maggot chymotrypsin I from Lucilia sericata is resistant to endogenous wound protease inhibitors.
    Authors: Telford G, Brown AP, Kind A, English JS, Pritchard DI
    Br. J. Dermatol., 2011;164(1):192-6.
    Species: Human
    Sample Types: Tissue Homogenates
    Applications: Western Blot


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Isotype Controls

Mouse IgG2A Isotype Control

Reconstitution Buffers

Secondary Antibodies

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