• Product nameAnti-alpha 1 Antitrypsin antibody
    See all alpha 1 Antitrypsin primary antibodies
  • Description
    Goat polyclonal to alpha 1 Antitrypsin
  • Tested applicationsSuitable for: Dot Blot, ELISA, IP, WB, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    a1-Anti-Trypsin [Human Plasma]

  • Positive control
    • IHC-P: FFPE human liver carcinoma tissue sections.



Our Abpromise guarantee covers the use of ab7633 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Dot Blot Use at an assay dependent concentration.
ELISA 1/2000 - 1/10000.
IP Use at an assay dependent concentration. PubMed: 19074433
WB Use at an assay dependent concentration.
IHC-P Use a concentration of 5 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.


  • FunctionInhibitor of serine proteases. Its primary target is elastase, but it also has a moderate affinity for plasmin and thrombin. Irreversibly inhibits trypsin, chymotrypsin and plasminogen activator. The aberrant form inhibits insulin-induced NO synthesis in platelets, decreases coagulation time and has proteolytic activity against insulin and plasmin.
    Short peptide from AAT: reversible chymotrypsin inhibitor. It also inhibits elastase, but not trypsin. Its major physiological function is the protection of the lower respiratory tract against proteolytic destruction by human leukocyte elastase (HLE).
  • Tissue specificityUbiquitous. Expressed in leukocytes and plasma.
  • Involvement in diseaseAlpha-1-antitrypsin deficiency
  • Sequence similaritiesBelongs to the serpin family.
  • DomainThe reactive center loop (RCL) extends out from the body of the protein and directs binding to the target protease. The protease cleaves the serpin at the reactive site within the RCL, establishing a covalent linkage between the carboxyl group of the serpin reactive site and the serine hydroxyl of the protease. The resulting inactive serpin-protease complex is highly stable.
  • Post-translational
    N-glycosylated. Differential glycosylation produces a number of isoforms. N-linked glycan at Asn-107 is alternatively di-antennary, tri-antennary or tetra-antennary. The glycan at Asn-70 is di-antennary with trace amounts of tri-antennary. Glycan at Asn-271 is exclusively di-antennary. Structure of glycans at Asn-70 and Asn-271 is Hex5HexNAc4. The structure of the antennae is Neu5Ac(alpha1-6)Gal(beta1-4)GlcNAc attached to the core structure Man(alpha1-6)[Man(alpha1-3)]Man(beta1-4)GlcNAc(beta1-4)GlcNAc. Some antennae are fucosylated, which forms a Lewis-X determinant.
    Proteolytic processing may yield the truncated form that ranges from Asp-30 to Lys-418.
  • Cellular localizationSecreted. Endoplasmic reticulum. The S and Z allele are not secreted effectively and accumulate intracellularly in the endoplasmic reticulum and Secreted, extracellular space, extracellular matrix.
  • Information by UniProt
  • Database links
  • Alternative names
    • A1A antibody
    • A1AT antibody
    • A1AT_HUMAN antibody
    • AAT antibody
    • Alpha 1 antiproteinase antibody
    • Alpha 1 antitrypsin antibody
    • Alpha 1 antitrypsin null antibody
    • Alpha 1 protease inhibitor antibody
    • Alpha-1 protease inhibitor antibody
    • Alpha-1-antiproteinase antibody
    • alpha1 proteinase inhibitor antibody
    • Alpha1AT antibody
    • Dom1 antibody
    • PI antibody
    • PI1 antibody
    • PRO2275 antibody
    • Serine (or cysteine) proteinase inhibitor clade A member 1 antibody
    • Serine protease inhibitor 1-1 antibody
    • Serine protease inhibitor A1a antibody
    • Serpin A1 antibody
    • Serpin A1a antibody
    • Serpin peptidase inhibitor clade A member 1 antibody
    • Serpina1 antibody
    • Short peptide from AAT antibody
    • SPAAT antibody
    • Spi1-1 antibody
    see all

Anti-alpha 1 Antitrypsin antibody images

  • Anti-alpha 1 Antitrypsin antibody (ab7633) at 10 µg + Albumin depleted human serum

    Goat peroxidase conjugate at 1/1000 dilution

  • Performed under reducing conditions.

    Multiplex western blot analysis of 35 µg of human serum with 350 ng of added GST. Green bands are labelling human transferrin, with ab34673 and a donkey anti-rabbit DyLight® 549 conjugate. Red bands are labelling trypsin, with ab7633 and a donkey anti-goat DyLight® 649 conjugate. Blue bands are labelling human IgG with a primary and a donkey anti-mouse DyLight® 488 conjugate. All primaries were diluted to 1/1,000 and incubated overnight at 4°C. All secondaries were diluted to 1/10,000 for 30 minutes at 4°C.

  • Multiplex western blot analysis of human serum. Green bands are labelling human transferrin, with ab34673 and a DyLight® 549 conjugate. Red bands are labelling trypsin, with ab7633 and a DyLight® 649 conjugate. Blue bands are labelling human IgG with a primary and a DyLight® 488 conjugate. All primaries were diluted to 1/1,000 and incubated overnight at 4°C. All secondaries were diluted to 1/10,000 for 1 hour at 4°C.

  • IHC image of alpha 1 Antitrypsin staining in human liver carcinoma formalin fixed paraffin embedded tissue section*, performed on a Leica Bond system using the standard protocol B. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab7633, 5µg/ml, for 15 mins at room temperature. A donkey anti-goat biotinylated secondary antibody was used to detect the primary, and visualized using an HRP conjugated ABC system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.


    *Tissue obtained from the Human Research Tissue Bank, supported by the NIHR Cambridge Biomedical Research Centre

References for Anti-alpha 1 Antitrypsin antibody (ab7633)

This product has been referenced in:
  • Hansen HG  et al. Versatile microscale screening platform for improving recombinant protein productivity in Chinese hamster ovary cells. Sci Rep 5:18016 (2015). WB . Read more (PubMed: 26657798) »
  • Chen Y  et al. Role of malectin in Glc(2)Man(9)GlcNAc(2)-dependent quality control of a1-antitrypsin. Mol Biol Cell 22:3559-70 (2011). WB ; Human . Read more (PubMed: 21813736) »

See all 5 Publications for this product

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I am very glad to hear that our anti-Beta Actin loading control has worked so well for you.

In regards to a loading control for your current needs, Beta Actin would only be present in serum if shearing of cells had occurred during collection...

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Abcam guarantees this product to work in the species/application used in this Abreview.
Application ELISA
Sample Human Serum (Serum)
Specification Serum
Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5%
Type Sandwich (Capture)

Abcam user community

Verified customer

Submitted Jul 16 2010

Thank you for your enquiry about our alpha 1 Antitrypsin antibodies. The antibody ab7635 is the HRP conjugated form of ab7633 and I would not advise to use those antibodies in the same assay. If you wish to do a sandwich ELISA we recommend to use a mo...

Read More

Sorry, we have no data on the use of this antibody with paraffin.