Detects ACE/CD143 in direct ELISAs and Western blots. In direct ELISAs, less than 10% cross-reactivity with recombinant mouse ACE is observed and less than 5% cross-reactivity with recombinant human ACE-2 is observed.
Polyclonal Goat IgG
Mouse myeloma cell line NS0-derived recombinant human ACE/CD143 Leu30-Leu1261 Accession # P12821
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Detection of ACE/CD143 in Human Mature Monocyte-derived Dendritic Cells by Flow Cytometry.
Human mature monocyte-derived dendritic cells were stained with Goat Anti-Human ACE/CD143 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF929, filled histogram) or isotype control antibody (Catalog # AB-108-C, open histogram), followed by Allophycocyanin-conjugated Anti-Goat IgG Secondary Antibody (Catalog # F0108).
ACE/CD143 was detected in immersion fixed paraffin-embedded sections of human kidney using 15 µg/mL Goat Anti-Human ACE/CD143 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF929) overnight at 4 °C. Tissue was stained with the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
ACE/CD143 was detected in immersion fixed paraffin-embedded sections of human kidney array using Goat Anti-Human ACE/CD143 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF929) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Lower panel shows a lack of labeling if primary antibodies are omitted and tissue is stained only with secondary antibody followed by incubation with detection reagents. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
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.
ACE (also known as peptidyl-dipetidase A) is a zinc metallopeptidase important for blood pressure control and water and salt metabolism (2). It cleaves the C-terminal dipeptide from angiotensin I to produce the potent vasopressor octapeptide angiotensin II and inactivates bradykinin by the sequential removal of two C-terminal dipeptides. In addition to the two physiological substrates, ACE cleaves C-terminal dipeptides from various oligopeptides with a free C-terminus. Because of its location and specificity, ACE plays additional roles in immunity, reproduction and neuropeptide regulation. For example, ACE degrades Alzheimer amyloid beta -peptide (A beta ), retards A beta aggregation, deposition, fibril formation, and inhibits cytotoxicity (3).
ACE is a type I membrane protein and exists in two isoforms (2). Somatic ACE, found in endothelial, epithelial and neuronal cells, comprises two highly similar domains called N- and C-domains, each of which contains the HExxH consensus sequence for zinc binding. Germinal ACE, found exclusively in the testes, comprises a single catalytically active domain identical to the C-domain of somatic ACE except for an N-terminal 67 residue germinal ACE-specific sequence. Physiological functions of the two tissue-specific isozymes are not interchangeable (4). For example, sperm-specific expression of the germinal ACE, not the somatic ACE, in ACE knockout male mice restored fertility.
Soluble ACE is present in many biological fluids, such as serum, seminal fluid, amniotic fluid and cerebrospinal fluid (2). The soluble ACE is derived from the membrane forms by actions of secretases or sheddases. The identities of the secretases have not been revealed, although they belong to the family of zinc metallopeptidases (5, 6).
Soubrier, et al. (1988) Proc. Natl. Acad. Sci. USA 85:9386.
Corvol, P. and T.A. Williams (1998) in Handbook of Proteolytic Enzymes. Barrett, A.J. et al. (eds): San Diego, Academic Press, p. 1066.
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