Osteopontin Recombinant antibody

Osteopontin Uni-rAb^TM Recombinant Antibody for IHC, IF/ICC, ELISA

Host / Isotype

Rabbit / IgG

Reactivity

human, mouse

Applications

IHC, IF/ICC, ELISA

Conjugate

Unconjugated

CloneNo.

240206B7

Cat no : 83341-2-RR

Synonyms

OPN, SPP1, SPP1, OPN, ETA 1, BSPI

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Validation Data Gallery

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  IHC staining of mouse lung using 83341-2-RR

  Immunohistochemical analysis of paraffin-embedded mouse lung tissue slide using 83341-2-RR (OPN, SPP1 antibody) at dilution of 1:200 (under 10x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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  IHC staining of mouse lung using 83341-2-RR

  Immunohistochemical analysis of paraffin-embedded mouse lung tissue slide using 83341-2-RR (OPN, SPP1 antibody) at dilution of 1:200 (under 40x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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  IF Staining of HepG2 using 83341-2-RR

  Immunofluorescent analysis of (4% PFA) fixed HepG2 cells using OPN, SPP1 antibody (83341-2-RR, Clone: 240206B7 ) at dilution of 1:250 and CoraLite®488-Conjugated AffiniPure Goat Anti-Rabbit IgG(H+L) (SA00013-2).

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  Affinity and Kinetic Characterization of 83341-2-RR

  Biolayer interferometry (BLl) kinetic assays of 83341-2-RR against Human OPN/SPP1 were performed. The affinity constant is 0.468 nM.

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Tested Applications

• Positive IHC detected in: mouse lung tissue; Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
• Positive IF/ICC detected in: HepG2 cells

Recommended dilution

• Immunohistochemistry (IHC): IHC : 1:50-1:500
• Immunofluorescence (IF)/ICC: IF/ICC : 1:125-1:500

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

The immunogen of 83341-2-RR is Osteopontin Fusion Protein expressed in E. coli.

• Tested Reactivity: human, mouse
• Host / Isotype: Rabbit / IgG
• Class: Recombinant
• Type: Antibody
• Immunogen: Fusion Protein
• Full Name: secreted phosphoprotein 1
• Calculated Molecular Weight: 314 aa, 35 kDa
• GenBank Accession Number: BC007016
• Gene Symbol: Osteopontin
• Gene ID (NCBI): 6696
• Conjugate: Unconjugated
• Form: Liquid
• Purification Method: Protein A 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

Osteopontin (OPN), also known as SPP1, is a secreted glycophosphoprotein that belongs to the small integrin-binding ligand N-linked glycoprotein (SIBLING) family. Originally isolated from bone, OPN has been found in kidneys, vascular tissues, biological fluids, and various tumor tissues (PMID: 15138464; 16406521). OPN can interact with CD44 and integrins and regulate diverse biological processes. It has a multifaceted role in bone development and remodeling, and is also involved in the inflammatory and immune response, oncogenesis and cancer progression. The very acidic nature of OPN, as well as the presence of variable posttranslational modifications, has led to anomalous migration in SDS-polyacrylamide gels and therefore to reports of different molecular weights for OPN (PMID: 8293561). Depending on the cell and tissue source and/or the SDS-PAGE system, OPN migrates with a molecular weight of 44-80 kDa, as well as at some smaller bands corresponding to peptide fragments (PMID: 8195113; 17890765).