• Product name

  • Description

    Rabbit polyclonal to ALAS2/ASB
  • Host species

  • Tested applications

    Suitable for: WB, IHC-Pmore details
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Mouse, Rat, Rabbit, Horse, Cow, Dog, Pig, Macaque monkey, Gorilla, Orangutan
  • Immunogen

    Synthetic peptide corresponding to Human ALAS2/ASB aa 550 to the C-terminus conjugated to keyhole limpet haemocyanin.
    (Peptide available as ab166589)

  • Positive control

    • This antibody gave a positive signal in Human Heart tissue and Human Heart Mitochondrial lysates. This antibody gave a positive result in IHC in the following FFPE tissue: Human normal liver.
  • General notes

     This product was previously labelled as ALAS2




Our Abpromise guarantee covers the use of ab136799 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
WB Use a concentration of 1 µg/ml. Detects a band of approximately 58 kDa (predicted molecular weight: 64 kDa).
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.


  • Tissue specificity

    Erythroid specific.
  • Pathway

    Porphyrin metabolism; protoporphyrin-IX biosynthesis; 5-aminolevulinate from glycine: step 1/1.
  • Involvement in disease

    Defects in ALAS2 are a cause of anemia sideroblastic X-linked (XLSA) [MIM:300751]. Sideroblastic anemia is characterized by anemia of varying severity, hypochromic peripheral erythrocytes, systemic iron overload secondary to chronic ineffective erythropoiesis, and the presence of bone marrow ringed sideroblasts. Sideroblasts are characterized by iron-loaded mitochondria clustered around the nucleus. XLSA shows a variable hematologic response to pharmacologic doses of pyridoxine.
    Defects in ALAS2 are the cause of erythropoietic protoporphyria X-linked dominant (XLDPT) [MIM:300752]. Porphyrias are inherited defects in the biosynthesis of heme, resulting in the accumulation and increased excretion of porphyrins or porphyrin precursors. They are classified as erythropoietic or hepatic, depending on whether the enzyme deficiency occurs in red blood cells or in the liver. XLDPT is a form of porphyria characterized biochemically by a high proportion of zinc-protoporphyrin in erythrocytes, in which a mismatch between protoporphyrin production and the heme requirement of differentiating erythroid cells leads to overproduction of protoporphyrin in amounts sufficient to cause photosensitivity and liver disease. Note=Gain of function mutations in ALS2 are responsible for XLDPT, but they can also be a possible aggravating factor in congenital erythropoietic porphyria and other erythropoietic disorders caused by mutations in other genes (PubMed:21309041).
  • Sequence similarities

    Belongs to the class-II pyridoxal-phosphate-dependent aminotransferase family.
  • Cellular localization

    Mitochondrion matrix.
  • Information by UniProt
  • Database links

  • Alternative names

    • 5 @aminolevulinate synthase erythroid specific antibody
    • 5 aminolevulinate synthase 2 antibody
    • 5 aminolevulinate synthase 5 aminolevulinate synthase 2 antibody
    • 5 aminolevulinate synthase erythroid specific mitochondrial antibody
    • 5 aminolevulinic acid synthase 2 antibody
    • 5 aminolevulinic acid synthase antibody
    • 5-aminolevulinate synthase antibody
    • 5-aminolevulinic acid synthase 2 antibody
    • Alas 2 antibody
    • ALAS antibody
    • ALAS E antibody
    • ALAS, erythroid antibody
    • ALAS-E antibody
    • Alas2 antibody
    • ALASE antibody
    • Aminolevulinate delta synthase 2 antibody
    • Aminolevulinic acid synthase 2, erythroid antibody
    • ANH1 antibody
    • ASB antibody
    • Delta ALA synthase 2 antibody
    • Delta ALA synthetase antibody
    • Delta aminolevulinate synthase 2 antibody
    • Delta aminolevulinate synthase antibody
    • Delta-ALA synthase 2 antibody
    • Delta-aminolevulinate synthase 2 antibody
    • Erythroid specific ALAS antibody
    • erythroid-specific antibody
    • FLJ93603 antibody
    • HEM0_HUMAN antibody
    • mitochondrial antibody
    • OTTHUMP00000023388 antibody
    • OTTHUMP00000023389 antibody
    • OTTMUSP00000020679 antibody
    • RP23-338A17.1 antibody
    • SIDBA1 antibody
    • XLDPP antibody
    • XLEPP antibody
    • XLSA antibody
    see all


  • IHC image of ALAS2/ASB staining in Human normal liver formalin fixed paraffin embedded tissue section, performed on a Leica Bond™ system using the standard protocol F. 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 ab136799, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer 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.

  • All lanes : Anti-ALAS2/ASB antibody (ab136799) at 1 µg/ml

    Lane 1 : Human heart tissue lysate - total protein (ab29431)
    Lane 2 : Human Heart Mitochondrial Lysate

    Lysates/proteins at 10 µg per lane.

    All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/10000 dilution

    Developed using the ECL technique.

    Performed under reducing conditions.

    Predicted band size: 64 kDa
    Observed band size: 58 kDa
    why is the actual band size different from the predicted?
    Additional bands at: 43 kDa. We are unsure as to the identity of these extra bands.

    Exposure time: 10 seconds

    The band observed at 58 kDa could potentially be a cleaved form of ALAS2/ASB due to the presence of a 49 amino acid transit peptide. This blot was produced using a 4-12% Bis-tris gel under the MOPS buffer system. The gel was run at 200V for 50 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using 5% Bovine Serum Albumin before being incubated with ab136799 overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP, and visualised using ECL development solution.


ab136799 has not yet been referenced specifically in any publications.

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