Regulates central hypertension through its calcium-modulated preference to cleave N-terminal acidic residues from peptides such as angiotensin II. ENPEP is considered to be an essential and highly specific enzyme, which metabolizes and inactivates bioactive peptides such as angiotensin II (AngII) in the renin-angiotensin system. ENPEP is expressed in neoplastic lesions of the uterine cervix, and its levels are upregulated as the lesions progress from cervical intraepithelial neoplasms to invasive squamous cell carcinomas. ENPEP expression is absent in normal cells and is overexpressed in cancer cell lines compared with normal cells of mammary origin.
Background References
1. Yang Y et al. Structural insights into central hypertension regulation by human aminopeptidase A. J Biol Chem 288:25638-25645 (2013).
2. Ino K et al. Expression of aminopeptidase A in human gestational choriocarcinoma cell lines and tissues. Placenta 21:63-72 (2000).
Sequence Similarity
Belongs to the peptidase M1 family.
Tissue Specificity
Expressed in choriocarcinoma cancer cell lines (at protein level). Expressed by epithelial cells of the proximal tubule cells and the glomerulus of the nephron. Also found in a variety of other tissues.
Western blot analysis of AP-A on Human kidney tissue lysate with Rabbit anti-AP-A antibody (ET7109-45) at 1/500 dilution.
Lysates/proteins at 10 µg/Lane. Exposure time: 2 minutes; ECL: K1801
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: ET7109-45, 1/500 in 5% NFDM/TBST, 2 hours at room temperature Secondary antibody: Goat anti-Rabbit IgG-HRP (HA1001), 1/30,000 in 5% NFDM/TBST, 1 hour at room temperature
Immunohistochemical analysis of paraffin-embedded human kidney tissue with Rabbit anti-AP-A antibody (ET7109-45) at 1/200 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET7109-45) at 1/200 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded human small intestine tissue with Rabbit anti-AP-A antibody (ET7109-45) at 1/1,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET7109-45) at 1/1,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"