Pappalysin-2/PAPP-A2 Antibody (242011) [Alexa Fluor® 594]

• Applications: WB, IP
• Clone: 242011
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Alexa Fluor 594

Pappalysin-2/PAPP-A2 Antibody (242011) [Alexa Fluor® 594] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant human Pappalysin‑2/PAPP‑A2
  Ser234-Cys1396
  Accession # Q9BXP8
• Specificity: Detects human Pappalysin‑2/PAPP‑A2 in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant human PAPP-A is observed.
• Isotype: IgG2b
• Clonality: Monoclonal
• Host: Mouse
• Purity Statement: Protein A or G purified

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Background

Pappalysins belong to a fifth family of metzincin proteases that consists of ADAMs/ADAMTSs, MMPs, astacins and serrylysins (1, 2). PAPP-A is an important pregnancy protein and increases in plasma by a factor of about 150 during pregnancy as compared to the nonpregnant state. PAPP-A is also a major marker of Down syndrome in the first trimester of pregnancy because maternal serum levels of PAPP-A are significantly reduced when a fetus affected by Down syndrome is present (3). PAPP-A cleaves Insulin-like Growth Factor-Binding Protein-4 and -5 (IGFBP-4 and -5) at a single site, resulting in the release of bioactive IGF (4). Compared to PAPP‑A, PAPP-A2 (also called PAPP-E), the second member of the family is less characterized. PAPP-A2 shares 45% amino acid identity to PAPP-A in the mature form, which is synthesized as a preproprotein consisting of multiple domains (1). The prepro region (residues 1‑233) and the C-terminal region (residues 1397‑1791) are not included in recombinant human PAPP-A2.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.