PAPPA Polyclonal antibody

PAPPA Polyclonal Antibody for WB, IHC, ELISA

Host / Isotype

Rabbit / IgG

Reactivity

human

Applications

WB, IHC, ELISA

Conjugate

Unconjugated

Cat no : 18095-1-AP

Synonyms

ASBABP2, DIPLA1, IGF dependent IGFBP 4 protease, IGFBP 4ase, PAPA, PAPP A, PAPPA, PAPPA1, Pappalysin 1

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Validation Data Gallery

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  WB analysis using 18095-1-AP

  human placenta tissue were subjected to SDS PAGE followed by western blot with 18095-1-AP (PAPPA antibody) at dilution of 1:1000 incubated at room temperature for 1.5 hours.

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  IHC staining of human placenta using 18095-1-AP

  Immunohistochemical analysis of paraffin-embedded human placenta tissue slide using 18095-1-AP (PAPPA antibody) at dilution of 1:100 (under 40x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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  IHC staining of human placenta using 18095-1-AP

  Immunohistochemical analysis of paraffin-embedded human placenta tissue slide using 18095-1-AP (PAPPA antibody) at dilution of 1:100 (under 10x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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Tested Applications

• Positive WB detected in: human placenta tissue
• Positive IHC detected in: human placenta tissue; Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0

Recommended dilution

• Western Blot (WB): WB : 1:500-1:2000
• Immunohistochemistry (IHC): IHC : 1:50-1:500

It is recommended that this reagent should be titrated in each testing system to obtain optimal results.

Sample-dependent, Check data in validation data gallery.

Product Information

18095-1-AP targets PAPPA in WB, IHC, ELISA applications and shows reactivity with human samples.

• Tested Reactivity: human
• Host / Isotype: Rabbit / IgG
• Class: Polyclonal
• Type: Antibody
• Immunogen: PAPPA fusion protein Ag11863
• Full Name: pregnancy-associated plasma protein A, pappalysin 1
• Calculated Molecular Weight: 1627 aa, 181 kDa
• Observed Molecular Weight: 180-220 kDa
• GenBank Accession Number: BC078657
• Gene Symbol: PAPPA
• Gene ID (NCBI): 5069
• Conjugate: Unconjugated
• Form: Liquid
• Purification Method: Antigen affinity purification
• Storage Buffer: PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
• Storage Conditions: Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20^oC storage. 20ul sizes contain 0.1% BSA.

Background Information

Pregnancy-associated plasma protein A (PAPPA) is a metalloproteinase secreted by human placenta, and it can interact with IGF-binding proteins (IGFBPs) to regulate the proteolysis and the bioavailability of insulin-like growth factor (IGF). Circulating PAPPA represents a consolidated biomarker in combined first-trimester screening tests, allowing an early prenatal diagnosis of chromosomal abnormalities, preeclampsia, and intrauterine growth restriction risk. PAPPA is highly expressed in placenta and pregnancy serum (PMID: 34974815, 34974815).