This antibody gave a positive signal in NIH3T3 whole cell lysate as well as the following Mouse tissue lysates: Placenta; Lung; Spleen; Heart.
This antibody gave a positive result in IHC in the following FFPE tissue: mouse normal placenta.
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The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use a concentration of 1 µg/ml. Detects a band of approximately 108 kDa (predicted molecular weight: 87 kDa).
Use a concentration of 5 µg/ml.
Expressed in all tissues, except liver, with high expression in placenta, lung, spleen and veins.
Involvement in disease
Genetic variations in ADAM33 are associated with susceptibility to asthma (ASTHMA) [MIM:600807]. The most common chronic disease affecting children and young adults. It is a complex genetic disorder with a heterogeneous phenotype, largely attributed to the interactions among many genes and between these genes and the environment. It is characterized by recurrent attacks of paroxysmal dyspnea, with weezing due to spasmodic contraction of the bronchi.
The conserved cysteine present in the cysteine-switch motif binds the catalytic zinc ion, thus inhibiting the enzyme. The dissociation of the cysteine from the zinc ion upon the activation-peptide release activates the enzyme.
The precursor is cleaved by a furin endopeptidase.
ADAM33 contains a number of potential glycosylation sites (SwissProt) which may explain its migration at a higher molecular weight than predicted.
The band observed at 68 kDa could potentially be a cleaved form of ADAM33 due to the presence of both a signal and pro peptide.
The expression profile observed is consistent with what has been described in the literature (PMID:
IHC image of ADAM33 staining in mouse normal placenta formalin fixed paraffin embedded tissue section, performed on a Leica BondTM 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 ab113740, 5µg/ml, for 15 mins at room temperature. A Goat anti-Rabbit 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.